HomeMy WebLinkAboutCIRI-ANC-CAEC ASD Chugiak High School 2012-EEAudit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page i Anchorage, AK
RREEPPOORRTT DDIISSCCLLAAIIMMEERR
The information contained within this report, including any attachment(s), was produced under contract to
Alaska Housing Finance Corporation (AHFC). IGAs are the property of the State of Alaska, and may be
incorporated into AkWarm-C, the Alaska Retrofit Information System (ARIS), or other state and/or
public information systems. AkWarm-C is a building energy modeling software developed under
contract by AHFC.
This material is based upon work supported by the Department of Energy under Award Number
DE-EE0000095. This report was prepared as an account of work sponsored by an agency of the United
States Government. Neither the United States Government nor any agency thereof, nor any of their
employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the
accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or
represents that its use would not infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not
necessarily constitute or imply its endorsement, recommendation, or favoring by the United States
Government or any agency thereof. The views and opinions of authors expressed herein do not
necessarily state or reflect those of the United States Government or any agency thereof.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page ii Anchorage, AK
TTAABBLLEE OOFF CCOONNTTEENNTTSS
ACRONYMS GLOSSARY .......................................................................................................... III
EXECUTIVE SUMMARY AND PREFACE .................................................................................. 1
1.0 METHODOLOGY ............................................................................................................ 4
2.0 BUILDING DESCRIPTION .............................................................................................. 5
2.1 ENERGY MANAGEMENT POLICY AND PLANNING ..................................................... 14
2.1.1 Hours of Operation .................................................................................14
2.1.2 System Balancing & Duct Cleaning ........................................................14
2.1.3 Outside Air Requirements ......................................................................14
3.0 UTILITY AND BENCHMARKING DATA ........................................................................ 15
3.1 SUMMARY AND BENCHMARKING DATA ................................................................... 15
3.2 ELECTRICITY ....................................................................................................... 16
3.3 NATURAL GAS ..................................................................................................... 18
4.0 ENERGY CONSERVATION OPPORTUNITIES ............................................................ 19
AAPPPPEENNDDIICCEESS
APPENDIX A – REALS BENCHMARKING DATA FORM ....................................................... A-1
APPENDIX B – ECO CALCULATIONS ................................................................................... B-1
APPENDIX C – MAJOR EQUIPMENT SURVEY .................................................................... C-1
APPENDIX D – THERMAL IMAGING REPORT ..................................................................... D-1
APPENDIX E – ASHRAE LEVEL II DESCRIPTION ................................................................ E-1
LLIISSTT OOFF TTAABBLLEESS
Table ES.1: Energy Cost Summary 2010 .................................................................................................... 2
Table ES.2: ECO Summary ......................................................................................................................... 2
Table 2.1: Envelope Summary ..................................................................................................................... 6
Table 3.1: Energy Performance Summary 2010 ....................................................................................... 15
Table 3.2: Energy and Cost Indices 2010 .................................................................................................. 15
Table 3.3: Electrical Demand Summary 2010 ........................................................................................... 15
Table 3.4: Index Comparison (CBECS 2003) ............................................................................................ 16
Table 4.1: ECO Summary .......................................................................................................................... 19
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page iii Anchorage, AK
AACCRROONNYYMMSS GGLLOOSSSSAARRYY
Acronym Definition
AHU Air Handling Unit
ARRA The American Recovery and Reinvestment Act
ASD Anchorage School District
ASHRAE American Society for Heating, Refrigeration and Air Conditioning Engineers
BPO Building Plant Operator
CBECS Commercial Buildings Energy Consumption Survey
CCF 100 Cubic Feet
DDC Digital Direct Control
DHW Domestic Hot Water
ECO Energy Conservation Opportunity
EIA US Energy Information Administration
EMCS Energy Management Control System
EPDM Ethylene-Propylene-Diene-Monomer
ES Elementary School
FCA Fuel Cost Adjustment
GCA Gas Cost Adjustment
GPF Gallons Per Flush
GPM Gallons Per Minute
HEU High-Efficiency Urinals
HID High Intensity Discharge
HP Horsepower
HPS High Pressure Sodium
HS High School
HVAC Heating, Ventilation, and Air Conditioning
HX Heat Exchanger
IES Illuminating Engineering Society
kWh Kilowatt-hour
LED Light Emitting Diode
MBH 1,000,000 BTU*Hours
OA Outside Air
PPA Purchased Power Adjustment
REAL Retrofit Energy Assessment for Loans
RSMeans An Industry Standard Cost Estimation Handbook
VAV Variable Air Volume Unit
VFD Variable Frequency Drive
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 1 Anchorage, AK
EEXXEECCUUTTIIVVEE SSUUMMMMAARRYY AANNDD PPRREEFFAACCEE
This report summarizes the results of an Ameresco Federal Solutions (Ameresco) Energy Audit of
Chugiak High School (Chugiak HS) at 16525 S Birchwood Loop Rd, Eagle River, Alaska 99567. The
intent of this report is to evaluate energy consumption and costs and to recommend improvements to
reduce consumption and costs. The Alaska Housing Finance Corporation (AHFC) provided funding for
this audit via the American Recovery and Reinvestment Act (ARRA) with the end goal of improving the
economy by reducing state-wide energy consumption and environmental impact.
Chugiak HS, Anchorage, Alaska
Ameresco engineers conducted an energy audit at Chugiak HS in several phases during the months of
September and October 2011. The engineers were assisted primarily by Bob Holben, Anchorage School
District (ASD) Plan Constructability Examiner and Paul Kapinos, Energy Conservation Manager. Mr.
Holben is no longer with ASD, but both Mr. Holben and Mr. Kapinos provided valuable assistance to the
Ameresco team including providing access to mechanical areas, utility data, facility drawings, and contact
with other pertinent building personnel.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 2 Anchorage, AK
This audit report identifies cost-effective system and facility modifications, alterations, additions,
retrofits, and operations adjustments. Systems investigated include heating, ventilation, and air
conditioning (HVAC), interior and exterior lighting, domestic water, motors, building envelope, and
energy management control systems (EMCS). The 289,309 square foot educational facility including
class rooms, offices, labs, gymnasiums, and other areas is covered by this energy audit. Table ES.1
summarizes the 2010 utility cost for this facility.
Table ES.1: Energy Cost Summary 2010
Energy Type Annual Cost
Electricity $ 407,677
Natural Gas $ 245,982
Total $ 653,659
Table ES.2 lists energy conservation opportunities (ECO) with estimated cost and savings figures.
ECOs are prioritized first according to recommendation status and then by simple payback number.
Recommended ECOs are listed before not recommended ECOs and simple paybacks are listed from
low to high. Savings figures are estimated based on information available at the time of the audit and
conforming to the level of detail recommended by the American Society of Heating, Refrigerating and
Air-Conditioning Engineers (ASHRAE) Level II Audit standards. For official ASHRAE Level II
description, please see Appendix E. Costs are estimated based on industry standard references and
Ameresco’s experience with relevant constructed energy conservation projects. Costs include
equipment as well as installation.
Table ES.2: ECO Summary
ECO
# ECO Description Annual
Savings Total Cost Simple
Payback
16 Low Flow Faucets $ 17,934 $ 6,554 0.4
7 Vending Misers $ 3,042 $ 6,405 2.1
12 Air-side Energy Recovery Loop $ 10,663 $ 24,456 2.3
4 CFL Lighting Upgrade $ 2,659 $ 7,199 2.7
9 Variable Secondary Pumping $ 36,431 $ 116,710 3.2
5 Install Occupancy Sensors $ 13,186 $ 111,702 8.5
6 LED Exit Sign Upgrade $ 338 $ 3,000 8.9
8 Premium Efficiency Motors $ 6,688 $ 70,373 10.5
13 Install Higher Efficiency DHW $ 923 $ 10,813 11.7
3 T5 Lighting Upgrade $ 2,453 $ 32,122 13.1
17 Install Additional Insulation in H120 $ 37 $ 614 16.6
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 3 Anchorage, AK
ECO
# ECO Description Annual
Savings Total Cost Simple
Payback
2 T8 Lighting Upgrade $ 22,107 $ 389,966 17.6
10 Install Higher Efficiency Boilers $ 25,029 $ 492,762 17.7
1 Exterior Lighting Upgrade $ 27,115 $ 489,167 18.0
15 Install High Efficiency Urinals $ 1,869 $ 34,456 18.4
11 Weather-stripping $ 989 $ 20,528 20.7
18 Install AERCO Boiler $ 35,545 $ 844,933 23.8
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 4 Anchorage, AK
11..00 MMEETTHHOODDOOLLOOGGYY
Prior to the site survey, the audit team gathered information about the site including utility data for
electric and natural gas services. This data was collected in the REAL Preliminary Benchmark Data
Form attached in Appendix A. Analysis of utility data reveals operational characteristics and usage trends
which help identify savings measures. Historical utility data is also useful for establishing a baseline for
future savings and benchmarking Chugiak HS against similar facilities.
The first step of the site survey was a review of drawings onsite to get an overview of building
construction and mechanical design. The drawings were then compared to the actual facility during a
walkthrough of the facility which included a thorough inspection of mechanical systems, lighting,
envelope, domestic water fixtures, and other energy using equipment.
Referencing data collected from the drawings and the walkthrough, the audit team determined a series of
ECOs recommended for implementation to analysis for cost-effectiveness. These ECOs were evaluated
by taking into account utility data and rates, local climate conditions, operating schedules, building
occupancy, and the condition of building systems and equipment. The audit team employs proven system
simulation techniques to model energy upgrades. Energy consumption of new equipment is based on up-
to-date data for commercially available systems.
Material costs and labor hour data is calculated from RSMeans Cost Data or other industry standards.
Recent quotes or costs from other Ameresco projects are used when available. Labor rates are based on
Davis-Bacon prevailing wage rates for the Anchorage area. Where reliable figures are available,
primarily on lighting calculations with predictable burnout rates, maintenance saving are included in
savings figures. Maintenance costs are not included in controls or mechanical upgrades. Avoided costs
of replacement are not included in these calculations.
LIMITATIONS OF STUDY
All results are dependent on the quality of input data provided, and can only act as an approximation. Not
all data could be verified and no destructive testing or investigations were undertaken. Some data may
have been incomplete. Financial ratios may vary from those forecasted. Ameresco and CAEC accept no
liability for financial loss due to ECMs that fail to meet the forecasted financial ratios.
This report is not intended to be a final design document. Budget for engineering and design of these
projects is not included in the cost estimate for each measure. Any modifications or changes made to a
building to realize the savings must be designed and implemented by licensed, experienced professionals
in their fields. All liabilities for upgrades, including but not limited to safety, design, and performance are
incumbent upon the professional(s) who prepare the design. Ameresco and Central Alaska Engineering
Company (CAEC) bear no responsibility for work performed as a result of this report.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 5 Anchorage, AK
22..00 BBUUIILLDDIINNGG DDEESSCCRRIIPPTTIIOONN
General: Chugiak HS is a 289,309 square foot facility with approximately 82 classrooms,
libraries, lecture halls, shop rooms, lab facilities, and a rifle range. The building was originally
constructed in 1965 and has undergone many subsequent expansions and renovations, the most
recent a mechanical renovation in 2003. The typical operating hours during the school year are
7:00 am to 4:00 pm, Monday-Friday from mid-August through mid-May. The average
occupancy profile is 1,480 people during the school year. The pool operates year round and was
transferred to the Municipality of Anchorage in 2001.
Building Envelope: The building shell of Chugiak HS has been expanded and renovated many
times since its original construction. The exterior surfaces include concrete block, synthetic
stucco, and pre-cast concrete panels. The original wall structure is 8-inch filled concrete block.
Structural elements for areas with high ceilings, such as the pool, café, and gyms are 6” steel
studs. R-19 batt insulation has been added to the original walls and has been included in
renovations. 1½ in to 3 in of rigid insulation was included behind the stucco finish where R-19
batt would not fit. The original roof was an inverted roof with 5 1/8 in total rigid insulation.
Moss growth on the original roof areas indicates improper drainage and likely adversely affects
insulation values. A partial roof upgrade was executed in the summer of 2011. Renovated roof
areas are EPDM with approximately 9 inches of rigid insulation. Windows are insulated, double
glazing with aluminum frames. Exterior doors are either hollow metal type with or without one-
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 6 Anchorage, AK
fourth inch (¼”) single glazing glass or aluminum frame with insulating glass. Wall and roof
insulation values exceed ASHRAE Advanced Energy Design guidelines for new facilities.
Windows and doors do not meet this standard; however, no upgrades are recommended. The
table below summarizes the thermal resistance characteristics of building envelope components.
Table 2.1: Envelope Summary
Envelope Estimated
R–Value
Exterior Walls 21.0-34.3
Roof 46.0
Exterior Doors 1.1-1.6
Exterior Windows 1.7
Air Distribution: There are no less than 10 separate mechanical spaces on the Chugiak
campus with 24 air handling units (AHUs) counted overall. The majority of these are
constant volume (CV) AHUs with hot water (HW) reheat. Some units were also
equipped with glycol pre-heat coils. Several make-up air units (MAUs) serve the shop
areas. A few AHUs are equipped with variable frequency drives (VFDs), though most
are only for air balancing and soft starting; however, AHU-1D has variable air volume
(VAV) control.
Fan Room 022 houses one Trane AHU in fair condition with some missing pipe insulation.
Fan Room 164 also has one AHU in fair to good condition. Two small fan rooms off of the
B145 Lecture Hall each house one Pace AHU in fair condition with two to three zones served
by separate HW heating coils. The relief intakes for these fans are located at floor level and
cleaning the grilles and ducts on the return side would likely improve fan performance.
Fan room D200 houses a 25 HP Scott Springfield AHU and a large relief fan, both in good
condition. This AHU is the only VAV AHU in the building and it serves core classrooms
and offices in the southwestern wing. A glycol heat exchanger and circulating pump in this
room serve the glycol preheat coil of this AHU. The AHU is also equipped with a HW reheat
coil. A damper mounted on the downstream side of the relief fan was not well secured to the
duct work and may be restricting airflow. Symptoms of high static pressure observed in this
area corroborate this assessment.
Next door, Fan Room D203 has 4 smaller Trane units that serve the performing arts addition.
All of these units are in good condition. Two of these units have both glycol and HW coils,
and the other two have HW coils only. Another HW to glycol heat exchanger and set of
circulating pumps serves the two AHUs with glycol coils.
Another fan room is only accessible by ladder from inside E109 CAD Lab. This fan room
houses a Pace AHU, a return fan, and a relief fan which all appear to be original to the
building. This equipment is in poor but operable condition with significant air leaks.
Pneumatic actuators on this unit have been replaced with electronic ones.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 7 Anchorage, AK
Another fan room is only accessible by ladder above room E122-1. The AHU and return fan
in this space also seem to be building original, but all actuators are still pneumatic. The
return grill for this unit is located inside a storage closet with no transfer grill on the door.
The room had extremely high positive static pressure, so much that it was difficult to close
the door. This extra static will cause inefficient temperature control and will increase fan
motor power consumption.
E116 Materials Science has two Trane AHUs mounted in the ceiling, both in good condition.
One AHU serves the materials science shop and one serves the home economics class
adjacent.
E140 Maintenance has one similar ceiling mounted Trane unit in good condition.
Mechanical room E173 is accessible from an exterior door on the southeast side of the
building. One 20 HP Temtrol AHU with glycol preheat and HW reheat and its associated
heat exchanger and circulation pumps are located in this room. Even though the AHU was
running off 100% outside air at the time of observation, none of the three relief fans in this
room were running. This may indicate improper control and may cause high building static
and excess fan energy consumption.
Two large AHUs in Fan Room 211 (40 HP and 30 HP) serve the main gym and cafeteria and
some nearby areas. Both AHUs have glycol preheat coils and HW reheat coils for each zone
served. The HW to glycol heat exchanger and associated pumps for the preheat coils are also
located in this space. Both of these AHUs are in good condition.
The AHU in Fan Room F310 has been heavily modified since its installation during original
building construction. Several zone ducts off of the unit have been cut and capped, but the
fan remains the same size. This causes high static pressures and flexing of the side of the
unit. This unit is in poor condition and the fan and RPM and/or motor size should be reduced
to match the current CFM requirement. A return air fan and exhaust fan are associated with
this unit. All actuators are pneumatic. This AHU has HW reheat coils on each zone.
The Trane AHU in Fan Room G122 serves the northeastern classrooms. This unit has glycol
pre-heat and HW reheat and is equipped with electronic actuators.
The two AHUs in H202 Mechanical Room are building original but have been retrofitted
with electronic actuators and newer motors. The units are in fair to good condition overall.
Unit ventilators with HW coils and pneumatic actuators serve the perimeter of the
southwestern wing.
Ventilation and Exhaust: Generally each AHU is equipped with an outdoor air (OA) intake
independent to that unit. OA is used for cooling during summer months so every unit is capable
of 100% OA economizer mode. Several mechanical rooms including D200, D203, and E173
serve as return air plenums with exhaust fans (EFs) in the mechanical space tied with the AHUs
in that space. AHUs in E109 and H202 have dedicated ducted EFs located in the mechanical
room. Relief for AHUs in F221 is control by dampers in ceiling of spaces served. For F310 the
relief to return ratio is controlled by linked dampers downstream of the return fan. Rooms G122,
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 8 Anchorage, AK
B144, B143, 164, and room 022 do not have EF located inside the room. Smaller fans are
distributed on the rooftop to balance OA intake for these AHUs. No heat recovery systems were
observed. Symptoms of high internal static pressure were observed in several sections of the
building. High static during winter months can drive moisture into the building envelope,
damaging it over time. A test and balance (TAB) survey of supply and exhaust fans is
recommended.
Heating: There are three sets of boilers which serve the main building and another pair which
serve the theatre building. 020 Boiler Room houses two 3,000 MBH dual-fuel Weil-McLain
boilers which provide hot water to baseboard heaters in the administrative office areas, heating
coils in the library, and other heating coils in the southwest wing of the building. The second
boiler room is H201. Three 3461 MBH dual-fuel Weil-McLain hot water boilers in this room
primarily serve heating coils and perimeter radiators for the main gym and cafeteria area. The
third boiler room, D110, houses three 4035 MBH dual-fuel Weil-McLain hot water boilers which
serve the eastern core of the school including the performing arts expansion. Many mechanical
spaces are equipped with HW to glycol heat exchangers. These heat exchangers are usually
located near the units served and equipped with small circulation pumps. The majority of system
piping is HW only. All pumping is constant volume and all secondary loops are equipped with
one lead and one stand-by pump. Primary loops have three pumps: a main loop pump, a booster
pump for boiler circulation, and a warm-up pump to avoid boiler shock from cold starting. Boiler
sets operate as lead lag and were designed to have one redundant boiler.
Cooling: Several server and telecom areas have supplemental split units for additional cooling.
All other areas use outdoor air for cooling. Where duct routing allows, a dedicated outdoor air
system for server and telecom rooms would use less energy.
Controls: A Honeywell pneumatic control system was originally installed and many of the
pneumatic actuators are still in place on older units. Some pneumatics on older units have been
replaced with electronic actuators during planned upgrades. The remaining pneumatic
components have been integrated with a Siemens Apogee system, which is the standard control
system throughout the district. Newer units are equipped with all digital sensors and controls.
Both the electronic and pneumatic portions of the system seem to be in good shape. Maintenance
staff is satisfied with the Apogee system and the pneumatic system does not seem to be a
maintenance issue. Often pneumatic systems this age are deteriorating and require significant
upkeep. However, at Chugiak, measured pneumatics air compressor cycle times were within a
normal range, indicating few system leaks.
Lighting: Interior lighting is mixture of T12 in older classrooms areas and T8 fluorescents in
classroom areas which are additions or have been renovated. The cafeteria has T5 high bay
fixtures. Classrooms have bi-level lighting on manual switches. Both the main and auxiliary
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 9 Anchorage, AK
gymnasiums have occupancy sensors. Theatre interior lighting is 30 to 130 watt incandescent
lamps, mostly on dimmable switching. Theatre corridors and entry lighting are switched by
manual timers. Exterior lighting fixtures are 100W HPS. Parking lot lights are 400W HPS.
Exterior lighting is also integrated with the security system and is scheduled to shut off at
11:00pm when the system is armed. Some corridors and restrooms on occupancy sensors were lit
even when unoccupied. Shutoff delays on sensors maybe longer than necessary. Some areas of
the building had higher than required lighting levels and may be suitable for de-lamping. Before
undertaking de-lamping, an in-depth lighting design study is recommended.
Process Loads and Miscellaneous Equipment: Two shops with wood and metal working
equipment contribute to building electric loads. There is an air compressor for tool air. A
cafeteria kitchen also contributes to energy consumption and heat load. There are also 14 Aurora
and Vend Alaska vending machines, many refrigerated, which contribute to building electricity
consumption and heating load.
Domestic Water: Domestic hot water is used in classrooms, lavatories, locker rooms, and the
kitchen. Two gas-fired atmospheric water heaters in the pool boiler room serve two storage tanks
with built in heat exchangers. These storage tanks serve the pool and gym locker rooms and
showers via an indirect heating system. Two other domestic water heaters, a 100 MBH AERCO
KC series gas fired unit and a 173 MBH Bock 70 gallon gas fired unit serve other fixtures
throughout the building. An A.O. Smith 100 gallon 240 MBH input gas fired water heater serves
the theatre including men’s and women’s dressing rooms. A pump provides continuous
circulation for theatre plumbing fixtures. Flow rates for plumbing fixtures were 1.6 gallons per
flush (gpf) toilets, 1.0 gpf urinals, 2.0 gallons per minute (gpm) lavatory sinks, 2.5 gpm utility
sinks, and 2.2 gpm showerheads. A small heat exchanger for heating domestic water for the
photography classroom photo development chemical system is located in boiler room D110.
Pictures of general equipment and building conditions follow this section. A list of major mechanical
equipment is available in Appendix C.
Thermal imaging of the building envelope can provide information about its condition. The building
exterior was scanned using a handheld thermal imager during the site walkthrough. Pictures provided
are meant to show a sample representative of windows, doors, and roofing at the location to give general
feedback about conductive and convective heat loss. Pictures are not meant to be used to find specific
problem areas and therefore exact locations are not discussed. Images captured during the scan are
shown in Appendix D.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 10 Anchorage, AK
Equipment Photos
Room 020 Boiler Room 020 HW Circ Pumps
Room 020 Controls Air Compressor Room 022 AHU
D200 Exhaust Fan D200 HW Booster Pump and Glycol Circ Pumps
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 11 Anchorage, AK
Equipment Photos
Room D203 AHU Room E140 Shop AHU
Room E173 Electronic Actuator Room E173 Return Air Damper
Room F211 VFDs Room F211 Zone Reheat Coil
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 12 Anchorage, AK
Equipment Photos
Room F310 Pneumatic Actuators Room F310 Capped Ducts
Room F310 Return Fan Room H201 Pool DHW Tanks
Room H201 Boiler Room H201 DDC Controllers
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 13 Anchorage, AK
Equipment Photos
Room H202 AHU Shop Tool Air Comp
Rooftop EFs Original Roof Surface
New EPDM Roof Building Exterior
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 14 Anchorage, AK
22..11 EENNEERRGGYY MMAANNAAGGEEMMEENNTT PPOOLLIICCYY AANNDD PPLLAANNNNIINNGG
22..11..11 HHoouurrss ooff OOppeerraattiioonn
Areas of the building are leased for various activities, year round. In years 2009 and 2010 these activities,
known as ‘Rentals’, began as early as 7:00am and closed as late as 11:59 pm Monday through Saturday.
This accounted for a substantial number of hours per week of extra occupancy. It is Ameresco’s
understanding that the renters of these areas do not pay directly for their energy use. It could be
advantageous for ASD to reevaluate Rentals prices to ensure ASD utility costs are covered.
22..11..22 SSyysstteemm BBaallaanncciinngg && DDuucctt CClleeaanniinngg
System air balance and the condition of ductwork were not inspected by Ameresco. Air balancing can
greatly improve occupant comfort, and as part of a re-commissioning project has been consistently shown
to save 5% to 20% of HVAC energy consumption. A preliminary air-balance assessment would be able
to determine if Chugiak HS is a good candidate for re-commissioning.
22..11..33 OOuuttssiiddee AAiirr RReeqquuiirreemmeennttss
Air change over requirements can be verified by referring to building equipment design drawings
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 15 Anchorage, AK
33..00 UUTTIILLIITTYY AANNDD BBEENNCCHHMMAARRKKIINNGG DDAATTAA
33..11 SSUUMMMMAARRYY AANNDD BBEENNCCHHMMAARRKKIINNGG DDAATTAA
Chugiak HS utilizes electricity and natural gas services. Electricity is provided by the Matanuska Electric
Association. Natural gas is supplied by ENSTAR Natural Gas. Natural gas is used primarily in boilers
for hydronic space heating and for domestic hot water (DHW) heating. Small quantities of fuel oil and
propane also contribute to building heating.
The tables below summarize the annual utility consumption of the site.
Table 3.1: Energy Performance Summary 2010
Energy Type Total Annual Use Units Conversion kBtu Annual Cost
Electricity 3,727,771 kWh 3.413 kBtu/kWh 12,722,882 $ 245,982
Natural Gas 294,689 Therm 100 kBtu/Therm 29,468,900 $ 407,677
Fuel Oil 102.96 Therm 100 kBtu/Therm 10,296 N/A
Propane 71.60 Therm 100 kBtu/Therm 7,160 N/A
42,191,782 $ 653,659
Table 3.2: Energy and Cost Indices 2010
Index Value Units
Energy Utilization Index 145.9 kBtu/sq ft
Energy Cost Index 2.26 $/sq ft
Table 3.3: Electrical Demand Summary 2010
Index Month kW W/sq ft
Maximum Demand Oct, Nov, & Feb 844 2.917
Minimum Demand June 488 1.687
Benchmarking the site’s energy consumption per square foot to facilities in the US Energy Information
Administration’s (EIA) Commercial Buildings Energy Consumption Survey (CBECS) database gives an
estimate of the site’s energy efficiency. Benchmarking comparisons are shown in Table 3.4 on the
following page.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 16 Anchorage, AK
Table 3.4: Index Comparison (CBECS 2003)
Category Total
kBtu/sq ft
Elec
kBtu/sq ft
Nat Gas
kBtu//sq ft
Chugiak HS 145.9 44.0 101.9
200,001 to 500,000 sq ft 101.0 51.2 36.1
Education 83.1 37.6 38.0
Construction Year 1960-69 90.9 40.6 45.3
CBECS Climate Zone 1 93.2 39.3 56.3
Zone 1 - 200,001 to 500,000 sqft 111.8 42.0 55.2
Zone 1 - Education 91.6 28.0 54.6
Zone 1 - Construction Year 1960-69 108.0 37.9 62.0
Chugiak HS has an energy consumption rate is substantially higher than surveyed educational facilities as
well as other buildings in CBECS climate zone 1. Natural gas consumption is higher than all averages.
Electric usage is a bit higher than other educational facilities, especially Zone 1 education buildings. This
increased consumption may be due in part to equipment loads in workshops, but observed high building
static pressure and a hydronic system with many booster pumps likely also contributes to this increased
consumption. The higher than typical natural gas usage may indicate an excess of outside air intake, extra
hours of operation, poor overall heating system efficiency, or some combination of the three.
33..22 EELLEECCTTRRIICCIITTYY
Chugiak HS’s blended electricity average FY10 rate was $0.11/kWh. For FY09 the rate was $0.15/kWh.
The kWh consumption rate fluctuates depending on a Wholesale Power Cost Rate Adjustment (WPCRA)
based on the actual costs of fuel and power purchased from other electrical generation companies. The
energy rate schedule is calculated as follows as of 10/06/2011:
Facility Charge: $13.37/month
Demand Charge: $5.25/kW
Energy Charge: $0.06482/kWh
WPCRA: $0.05496/kWh
State Tax: $0.000492/kWh
Under-grounding Charge: 2% of bill less state and local taxes
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 17 Anchorage, AK
Chugiak HS FY09 and FY10 usage and cost data is presented in the figure below.
Chugiak HS - Electric Consumption (kWh) vs. Electric Cost ($)
0
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
MonthElectric Consumption (kWh)$0
$20,000
$40,000
$60,000
$80,000
$100,000
$120,000
Electric Cost ($)2009 Electric Consumption (kWh)2010 Electric Consumption (kWh)2009 Electric Cost ($)2010 Electric Cost ($)
The electric usage pattern reflects the occupancy pattern of the school year. The site does not use cooling
equipment, thus the monthly changes in power consumption are largely due to fan, pump, and lighting
usage. The cost of electricity tracks well with usage indicating that large fluctuations of the WPCRA are
not common. The high value for cost in February 2009 is likely an error in the data provided or a billing
irregularity. Original bills were not available for this audit.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 18 Anchorage, AK
33..33 NNAATTUURRAALL GGAASS
Chugiak HS’s average FY10 fuel oil cost was $0.98/Therm. The average FY09 fuel oil cost was
$0.84/Therm. The total rate fluctuates depending on the Gas Cost Adjustment (GCA) based on the
actual costs of fuel purchased. Chugiak HS FY09 and FY10 usage and cost data is presented in the
figure below. The natural gas rate schedule is calculated as follows:
Customer Charge: $109.00 per account per month
Base Rate: $0.1087/CCF
Gas Cost Adjustment: $0.57409/CCF (Varies)
Chugiak HS - Natural Gas Consumption (CCF) vs. Natural Gas Cost ($)
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
MonthNatural Gas Consumption (CCF)$0
$5,000
$10,000
$15,000
$20,000
$25,000
$30,000
$35,000
$40,000
$45,000
Natural Gas Cost ($)2009 Natural Gas Consumption (kWh)2010 Natural Gas Consumption (kWh)2009 Natural Gas Cost ($)2010 Natural Gas Cost ($)
Natural gas usage for both 2009 and 2010 follows a typical seasonal pattern. The moderate usage for the
summer months may indicate that the boiler and other heating systems are not shut down and operate
more than necessary.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 19 Anchorage, AK
44..00 EENNEERRGGYY CCOONNSSEERRVVAATTIIOONN OOPPPPOORRTTUUNNIITTIIEESS
Table 4.1 summarizes the ECOs identified during the energy audit and evaluated for implementation.
Potential ECOs for this report were identified based on observations made during the energy audit, a
review of historical energy consumption data, building drawings, and input from maintenance personnel.
These opportunities were evaluated for detailed savings, cost estimate, and life-cycle costs. Product
selections in each ECO indicate suitable and available products for Baxter ES. These products may or
may not be selected for actual implementation. The intent is to provide reasonable cost and performance
data to be used to evaluate ECO feasibility. A balance of cost and performance is considered when
selecting products. Alternative product selection options are not likely to substantially improve simple
payback numbers. A description of each energy conservation opportunity is provided in this section.
Table 4.1 presents total costs and annual savings for ECOs in the order they were calculated.
Sequential calculation avoids savings overlaps. For example, school savings from ECO 11 were
calculated using the efficiency of the new boilers from ECO 10. ECO 18 takes into account savings from
ECOs 1-9 but not ECOs 10-17.
Table 4.1: ECO Summary
ECO
# ECO Description Annual
Savings Total Cost Simple
Payback
1 Exterior Lighting Upgrade $ 27,115 $ 489,167 18.0
2 T8 Lighting Upgrade $ 22,107 $ 389,966 17.6
3 T5 Lighting Upgrade $ 2,453 $ 34,937 14.2
4 CFL Lighting Upgrade $ 2,659 $ 7,199 2.7
5 Install Occupancy Sensors $ 13,186 $ 111,702 8.5
7 Vending Misers $ 3,042 $ 6,405 2.1
8 Premium Efficiency Motors $ 6,688 $ 70,373 10.5
9 Variable Secondary Pumping $ 18,108 $ 74,333 4.1
10 Install Higher Efficiency Boilers $ 26,350 $ 523,376 19.9
11 Weather-stripping $ 989 $ 20,528 20.7
12 Air-side Energy Recovery Loop $ 10,663 $ 24,456 2.3
13 Install Higher Efficiency DHW $ 923 $ 10,813 11.7
15 Install High Efficiency Urinals $ 1,869 $ 34,456 18.4
16 Low Flow Faucets $ 17,934 $ 6,554 0.4
17 Install Additional Insulation in H120 $ 37 $ 614 16.6
18 Install AERCO Boiler $ 35,545 $ 844,933 23.8
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 20 Anchorage, AK
ECO 1 – Exterior Lighting Upgrade
Summary: This ECO proposes replacing existing exterior HPS lighting fixtures with high
efficiency LED fixtures via a retrofit kit for existing poles. LEDs have a higher efficacy than
HPS and are commercially available to replace outdoor building and roadway lights. These
fixtures have similar output, longer service life, and better lumen maintenance.
Recommendation: This ECO is almost recommended as a stand-alone measure with a simple
payback of 18.0 years. The simple payback period is longer than the typical 15-year length of
study period for lighting upgrades. However, most of the lighting fixtures analyzed in this
calculation had a life span of greater than 20 years in this application, and thus would pay back
within their lifetime. Maintenance savings due to longer life of recommended lamps are included
in this calculation.
ECO 2 –T8 Lighting Upgrade
Summary: This ECO proposes replacing existing T12 lighting fixtures with high efficiency T8
fixtures. T12 fixtures using magnetic ballasts are highly energy inefficient. Also, T12 lamps are
no longer in production and will be unavailable when warehouse reserves run out. Post-light
levels are generally nearly equal to that of the existing lighting systems and at minimum will meet
Illuminating Engineering Society (IES) guidelines for spaces renovated.
Recommendation: This ECO is recommended as a stand-alone measure with a simple payback
of 17.6 years. The simple payback period is longer than the typical 15-year length of study
period for lighting upgrades. However, the lighting fixtures analyzed in this calculation had a life
span of greater than 20 years in this application, and thus would pay back within their lifetime.
Maintenance savings due to longer life of recommended lamps are included in this calculation.
ECO 3 – T5 Lighting Upgrade
Summary: This ECO proposes replacing high intensity discharge (HID) lighting systems in the
medium and high bay areas such as gyms, auditoriums, workshops, etc. with T5 fluorescent
fixtures. HID lighting is often used in areas with high ceilings or roof structures. The fixtures
generate high luminous flux, are reasonably energy efficient, and are long lasting. Such systems
often remain illuminated continuously since the re-strike times make periodic switching in
irregularly occupied spaces a nuisance. Continuous operation of HID fixtures reduces the overall
energy efficiency of lighting systems designed around their use. Newer high output fluorescent
sources, characterized by quick warm-up with instant light output and improved efficiency, are
now being used in place of many medium wattage HID fixtures in low- and high-bay
applications. Post-light levels will be nearly equal to those of the existing lighting systems.
Recommendation: Applied to the buildings above, this ECO is recommended as a stand-alone
measure with a simple payback of 14.2 years. The simple payback period is less than the typical
15-year length of study period for lighting upgrades. Maintenance savings due to longer life of
recommended lamps are included in this calculation.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 21 Anchorage, AK
ECO 4 – CFL Lighting Upgrade
Summary: This ECO proposes retrofitting the existing incandescent light bulbs with compact
fluorescent lamps. Incandescent light bulbs installed in recessed fixtures, track lighting, utility
closets, and other general areas. Over 75% of the energy used by an incandescent light bulb is
converted into heat and is lost. Compact fluorescent lamps are much more efficient and can
easily replace incandescent bulbs. Post-light levels will be nearly equal to those of the existing
lighting systems or to IES standards for the present space usage, whichever is lower.
Recommendation: Applied to the buildings above, this ECO is recommended as a stand-alone
measure with a simple payback of 2.7 years. The simple payback period is less than the typical
15-year length of study period for lighting upgrades. Maintenance savings due to longer life of
recommended lamps are included in this calculation.
ECO 5 – Install Occupancy Sensors
Summary: This ECO proposes installing sensors to shut off lighting in unoccupied spaces.
Lighting systems are often left energized in unoccupied areas. Common sensing technologies
include infrared, ultrasonic, and audible sound, often combining multiple types of sensing in one
unit to avoid shutting off lights in an occupied area. Potential areas for occupancy control in this
facility include classrooms, offices, corridors, break areas, and utility closets.
Recommendation: This ECO is recommended with a simple payback of 8.5 years. The simple
payback period is less than the typical 15-year length of study period for lighting upgrades. This
ECO was calculated assuming the installation of ECO 2. If ECO 2 is not implemented, savings
will increase.
ECO 7 – Vending Miser Controls
Summary: This ECO proposes installing vending controls on vending machines throughout the
school. These machines operate 24 hours per day, 7 days per week regardless of building
occupancy. The heat generated by the refrigeration process is dumped into interior building
space and contributes to the building cooling load. Lighting in the machines contributes to
building energy consumption. VendingMiser® manufactures a control device that will power
down the machine until occupancy is detected. The miser’s intelligent controller is designed to
record occupancy patterns and modify the machine’s time-out period accordingly. Most
importantly, the miser monitors the ambient temperature while the machine is powered down and
automatically powers up the machine at appropriate intervals, independent of occupancy, to
ensure that the beverage products stay cold.
Recommendation: This ECO is recommended as a stand-alone measure with a simple payback
of 2.1 years. The energy cost savings justify the investment costs.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 22 Anchorage, AK
ECO 8 – Premium Efficiency Motors
Summary: This ECO proposes installing National Electrical Manufacturers Association
(NEMA) premium efficiency motors to replace standard and high efficiency motors. This
replacement would cover all fan and pump motors 2HP and higher as well as select few with less
than 2 HP. Premium efficiency motors typically increase energy efficiency by 2 to 3%.
Recommendation: This ECO is recommended with a simple payback of 10.5 years. The simple
payback period is less than the 20-year median expected life of the new motors. Maintenance
savings were not included in this calculation.
ECO 9 – Variable Secondary Pumping
Summary: This ECO proposes modifying the existing pumping configuration to a variable
secondary configuration. Existing hydronic systems use constant volume secondary loops with
three-way control valves on terminal devices. By eliminating the three-way control valves at the
terminal devices and installing VFDs on secondary loop pumps to modulate pump speed, a
significant quantity of pumping energy can be saved. This ECO assumes pump motors have been
upgraded to premium efficiency inverter duty motors.
Recommendation: This ECO is recommended as a stand-alone measure with a simple payback
of 4.1 years. The simple payback period is less than the 10-year median expected life of the
VFDs. The energy cost savings justify the initial investment cost.
ECO 10 – Install Higher Efficiency Boilers
Summary: This ECO proposes replacing existing hot-water heating boilers with higher energy
efficiency units. The existing boilers are approaching the end their useful service life. Boilers
employing modern technology can be installed to reduce energy consumption, improve system
operations, and reduce maintenance costs. The current boilers operating have a combustion
efficiency average of 80.4% whereas current generation high efficiency boilers reach 88%
efficiency.
Recommendation: This ECO is recommended with a simple payback of 19.9 years. The simple
payback period is less than the 25-year median expected life of the new boilers. Avoided costs of
replacement are included in this calculation. Annual energy savings for this ECO are $26,350
and annualized avoided cost savings are $9,992.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 23 Anchorage, AK
ECO 11 – Weather Stripping
Summary: This ECO proposes applying weather stripping to exterior door perimeters to reduce
air infiltration into the buildings. Reducing infiltration improves building performance by
reducing envelope heat loss. Many building doors have existing weather stripping material which
is worn or missing. Replacing this weather stripping will have significant impact.
Recommendation: This ECO is not recommended with a simple payback of 20.7 years. The
simple payback period is less than the 15-year expected lifespan of the analyzed weather-
stripping. This ECO was calculated assuming the installation of ECO 10. If ECO 10 is not
implemented, savings will increase.
ECO 12 – Air-Side Energy Recovery Loop
Summary: Large buildings require outside air intake in order to maintain adequate indoor air
quality. However, expelling indoor air and replacing it with outdoor requires a significant
amount of energy to heat the outdoor air during winter months and to cool outdoor air during
summer months. In order to reduce this heating/cooling load, the expelled indoor air and fresh
outdoor air may be passed through a set of coils connected by a glycol loop sides,
preheating/cooling the outdoor air before it is conditioned in the air handler. This ECO proposes
to install such energy recovery loops on AHUs where recommended.
Recommendation: Applied to the buildings above, this ECO is recommended as a stand-alone
measure with a simple payback of 2.3 years. The energy cost savings justify the investment
costs. This ECO was calculated assuming the installation of ECO 10. If ECO 10 is not
implemented, savings will increase.
ECO 13 – Install Higher Efficiency Domestic Water Heaters
Summary: This ECO proposes replacing existing domestic water heating units with higher
efficiency domestic hot water heaters. The current water heaters operating have a nominal
efficiency of 80% whereas current generation high efficiency water heaters reach up to 97%
efficiency.
Recommendation: This ECO is recommended with a simple payback of 11.7 years. The simple
payback period is less than the typical 20-year median expected life of the new hot water heaters.
Avoided costs of replacement are included in this calculation. Total avoided cost savings for this
ECO are $3,050.
Audit Report Level II Energy Audit
Ameresco Federal Solutions Chugiak HS
Page 24 Anchorage, AK
ECO 15 – Install High Efficiency Urinals
Summary: This ECO proposes installing high-efficiency urinals (HEUs) to replace standard
water urinals. Energy savings is realized by reducing water consumption and wastewater
treatment costs. The Caroma HEU utilizes only 0.13 gpf and is equipped with an automatic flush
sensor. Waterless urinals have the disadvantage of urinal cartridge maintenance which the HEU
does not.
Recommendation: This ECO is not recommended as a stand-alone measure with a simple
payback of 18.4 years. The simple payback period is longer than the typical 5-year length of
study period for domestic plumbing upgrades.
ECO 16 – Low Flow Faucets
Summary: This ECO proposes replacing existing conventional kitchen and lavatory faucets with
low-flow units to reduce water and fuel consumption. Existing units operate at 1.0-2.2 gpm or
more. New kitchen faucets will be 1.5 gpm and lavatory faucets will be 0.5 gpm. New faucets
will also have internal ceramic components, ensuring longer service life and requiring less
maintenance.
Recommendation: This ECO is recommended as a stand-alone measure with a simple payback
of 0.4 years. The simple payback period is less than the typical 5-year length of study period for
domestic plumbing upgrades. This ECO was calculated assuming the installation of ECO 13. If
ECO 13 is not implemented, savings will increase.
ECO 17 – Install Additional Insulation in H120
Summary: When room H120 was added at Chugiak HS, part of the exterior structure was left
un-insulated. This ECO entails adding blown insulation to fill the gap.
Recommendation: This ECO is recommended with a simple payback of 16.8 years. The simple
payback period is less than the 25-year typical study period for envelope measures.
ECO 18 – Install AERCO Boilers
Summary: This ECO proposes replacing existing hot-water heating boilers with AERCO units.
The existing boilers are approaching the end of their useful service life. AERCO boilers
employing modern technology can be installed to reduce energy consumption, improve system
operations, and reduce maintenance costs. The current boilers operating have an average
combustion efficiency of 82.6% whereas AERCO high efficiency boilers can be expected to
obtain an annual average of approximately reach 93% efficiency in this application.
Recommendation: This ECO is recommended with a simple payback of 23.8 years. The simple
payback period is less than the 25-year median expected life of the new boilers. Avoided costs of
replacement are included in this calculation. Annual energy savings for this ECO are $35,545
and annualized avoided cost savings are $9,992.
APPENDIX A
REALS Benchmarking
Data Form
First Name Last NameMiddle NamePhone Steven Golab348‐5132State ZipAK Monday‐FridaySaturday Sunday Holidays7:00‐4:00 Average # of Occupants During 1330 RenovationsDate19651966196919731987198920002001 (-17682) SF Pool Transfer to MOA2003 27974 SF Mechanical Room, Weight Room, Track PART II – ENERGY SOURCES Heating Oil Electricity Natural Gas Propane Wood Coal $ /gallon $ / kWh $ / CCF $ / gal $ / cord $ / tonOther energy sources? Chugiak High School Education ‐ K ‐ 12289,309Facility AddressBuilding TypeMixedCommunity PopulationFacility CityYear Built1965Building Name/ Identifier Building UsageBuilding Square FootageFacility Owned ByDate07/22/11Regional Education Attendance 52534 SF 6 Classrooms, Shopes, PE Rooms12166 SF 4 Classrooms Added16525 S Birchwood Loop Rd Eagle River58217 SF Original StructureREAL Preliminary Benchmark Data FormPART I – FACILITY INFORMATIONFacility OwnerMOA 280 SF Kiln Room100184 SF 13 Classroms, Shops, Pool, Gym1. Please check every energy source you use in the table below. If known, please enter the base rate you pay for the energy source.2. Provide utilities bills for the most recent two‐year period for each energy source you use.54564 SF 15 Classrooms, IMC, Café, Office1072 SF Pool Restrooms and LockersPrimary Operating HoursContact PersonCityAnchorage Mailing AddressFacility Zip261,50099577EmailGolab_Steven@asdk12.orgDetails
Chugiak High SchoolBuiding Size Input (sf) =289,3092009 Natural Gas Consumption (Therms)263,766.002009 Natural Gas Cost ($)256,2832009 Electric Consumption (kWh)4,032,5332009 Electric Cost ($)586,7172009 Oil Consumption (Therms)102.962009 Oil Cost ($)02009 Propane Consumption (Therms)71.602009 Propane Cost ($)0.002009 Coal Consumption (Therms)0.002009 Coal Cost ($)0.002009 Wood Consumption (Therms)0.002009 Wood Cost ($)0.002009 Thermal Consumption (Therms)0.002009 Thermal Cost ($)0.002009 Steam Consumption (Therms)0.002009 Steam Cost ($)0.002009 Total Energy Use (kBtu)40,157,0922009 Total Energy Cost ($)843,000Annual Energy Use Intensity (EUI)2009 Natural Gas (kBtu/sf) 91.22009 Electricity (kBtu/sf)47.62009 Oil (kBtu/sf) 0.02009 Propane (kBtu/sf) 0.02009 Coal (kBtu/sf) 0.02009 Wood (kBtu/sf) 0.02009 Thermal (kBtu/sf) 0.02009 Steam (kBtu/sf) 0.02009 Energy Utilization Index (kBtu/sf)138.8Annual Energy Cost Index (ECI)2009 Natural Gas Cost Index ($/sf)0.892009 Electric Cost Index ($/sf)2.032009 Oil Cost Index ($/sf)0.002009 Propane Cost Index ($/sf)0.002009 Coal Cost Index ($/sf)0.002009 Wood Cost Index ($/sf)0.002009 Thermal Cost Index ($/sf)0.002009 Steam Cost Index ($/sf)0.002009 Energy Cost Index ($/sf)2.91
2010 Natural Gas Consumption (Therms)294,689.002010 Natural Gas Cost ($)245,9822010 Electric Consumption (kWh)3,727,7712010 Electric Cost ($)407,6772010 Oil Consumption (Therms)102.962010 Oil Cost ($)02010 Propane Consumption (Therms)71.602010 Propane Cost ($)02010 Coal Consumption (Therms)0.002010 Coal Cost ($)02010 Wood Consumption (Therms)0.002010 Wood Cost ($)02010 Thermal Consumption (Therms)0.002010 Thermal Cost ($)02010 Steam Consumption (Therms)0.002010 Steam Cost ($)02010 Total Energy Use (kBtu)42,209,2392010 Total Energy Cost ($)653,659Annual Energy Use Intensity (EUI)2010 Natural Gas (kBtu/sf)101.92010 Electricity (kBtu/sf)44.02010 Oil (kBtu/sf)0.02010 Propane (kBtu/sf)0.02010 Coal (kBtu/sf)0.02010 Wood (kBtu/sf)0.02010 Thermal (kBtu/sf)0.02010 Steam (kBtu/sf)0.02010 Energy Utilization Index (kBtu/sf)145.9Annual Energy Cost Index (ECI)2010 Natural Gas Cost Index ($/sf)0.852010 Electric Cost Index ($/sf)1.412010 Oil Cost Index ($/sf)0.002010 Propane Cost Index ($/sf)0.002010 Coal Cost Index ($/sf)0.002010 Wood Cost Index ($/sf)0.002010 Thermal Cost Index ($/sf)0.002010 Steam Cost Index ($/sf)0.0020010 Energy Cost Index ($/sf)2.26Note:1 kWh = 3,413 Btu's1 Therm = 100,000 Btu's1 CF ≈ 1,000 Btu's
Chugiak High SchoolNatural GasBtus/CCF =100,000Provider Customer # Month Start Date End Date Billing Days Consumption (CCF) Consumption (Therms) Demand Use Natural Gas Cost ($) Unit Cost ($/Therm) Demand Cost ($)Enstar NGC38649 Jan‐09 1/6/2009 2/5/20093140,31640,316$40,078$0.99Enstar NGC38649 Feb‐09 2/6/2009 3/5/20092831,26031,260$31,079$0.99Enstar NGC38649 Mar‐09 3/6/2009 4/2/20092828,31228,312$28,136$0.99Enstar NGC38649 Apr‐09 4/3/2009 5/7/20093519,84219,842$19,734$0.99Enstar NGC38649 May‐09 5/8/2009 6/4/20092814,15214,152$14,082$1.00Enstar NGC38649 Jun‐09 6/5/2009 7/6/20093210,68310,683$10,749$1.01Enstar NGC38649 Jul‐09 7/7/2009 8/6/2009319,0629,062$9,111$1.01Enstar NGC38649 Aug‐09 8/7/2009 9/4/20092910,31110,311$10,352$1.00Enstar NGC38649 Sep‐09 9/5/2009 10/6/20093213,79213,792$13,698$0.99Enstar NGC38649 Oct‐09 10/7/2009 11/5/20093021,13221,132$20,930$0.99Enstar NGC38649 Nov‐09 11/6/2009 12/3/20092831,28331,283$31,143$1.00Enstar NGC38649 Dec‐09 12/4/2009 1/7/20103533,62133,621$27,191$0.81Enstar NGC38649Jan‐10 1/8/2010 2/4/20102837,56737,567$30,520$0.81Enstar NGC38649 Feb‐10 2/5/2010 3/4/20102827,47227,472$22,343$0.81Enstar NGC38649 Mar‐10 3/5/2010 4/8/20103528,31228,312$23,105$0.82Enstar NGC38649 Apr‐10 4/9/2010 5/6/20102825,13125,131$20,928$0.83Enstar NGC38649 May‐10 5/7/2010 6/3/20102813,53413,534$11,187$0.83Enstar NGC38649 Jun‐10 6/4/2010 7/8/20103514,03314,033$11,667$0.83Enstar NGC38649 Jul‐10 7/9/2010 8/5/20102813,17213,172$11,291$0.86Enstar NGC38649 Aug‐10 8/6/2010 9/2/20102814,51714,517$12,773$0.88Enstar NGC38649 Sep‐10 9/3/2010 10/7/20103518,47418,474$15,975$0.86Enstar NGC38649 Oct‐10 10/8/2010 11/4/20102824,68524,685$21,014$0.85Enstar NGC38649 Nov‐10 11/5/2010 12/2/20102831,81431,814$26,594$0.84Enstar NGC38649 Dec‐10 12/3/2010 1/2/20113045,97845,978$38,585$0.84Jan ‐ 09 to Dec ‐ 09 total:263,766263,7660$256,283$0Jan ‐ 10 to Dec ‐ 10 total:294,689294,6890$245,982$0$0.98$0.84Jan ‐ 09 to Dec ‐ 09 avg:Jan ‐ 10 to Dec ‐ 10 avg:
Chugach HS ‐ Natural Gas Consumption (Therms) vs. Natural Gas Cost ($)05,00010,00015,00020,00025,00030,00035,00040,00045,00050,000Jan‐09Feb‐09Mar‐09Apr‐09May‐09Jun‐09Jul‐09Aug‐09Sep‐09Oct‐09Nov‐09Dec‐09Jan‐10Feb‐10Mar‐10Apr‐10May‐10Jun‐10Jul‐10Aug‐10Sep‐10Oct‐10Nov‐10Dec‐10Date (Mon ‐ Yr)Natural Gas Consumption (Therms)$0$5,000$10,000$15,000$20,000$25,000$30,000$35,000$40,000$45,000Natural Gas Cost ($)Natural GasConsumption (Therms)Natural Gas Cost ($)
Chugiak High SchoolElectricityBtus/kWh =3,413Provider Customer # Month Start Date End Date Billing Days Consumption (kWh) Consumption (Therms) Demand Use Electric Cost ($) Unit Cost ($/kWh) Demand Cost ($)Mat‐Su Electric 22586 Jan‐09 12/27/2008 1/26/200930353,84512,077364$61,685$0.17?Mat‐Su Electric 22586 Feb‐09 1/27/2009 2/24/200928351,45911,995364$100,074$0.28?Mat‐Su Electric 22586 Mar‐09 2/25/2009 3/24/200927353,84312,077360$53,063$0.15?Mat‐Su Electric 22586 Apr‐09 3/25/2009 4/26/200932348,79011,904352$47,846$0.14?Mat‐Su Electric 22586 May‐09 4/27/2009 5/26/200929330,03911,264344$45,610$0.14?Mat‐Su Electric 22586 Jun‐09 5/27/2009 6/27/200931260,1668,879258$35,566$0.14?Mat‐Su Electric 22586 Jul‐09 6/28/2009 7/27/200929273,0599,320320$35,975$0.13?Mat‐Su Electric 22586 Aug‐09 7/28/2009 8/25/200928311,24410,623336$41,227$0.13?Mat‐Su Electric 22586 Sep‐09 8/26/2009 9/26/200931335,72411,458384$43,666$0.13?Mat‐Su Electric 22586 Oct‐09 9/27/2009 10/26/200929379,28412,945384$45,088$0.12?Mat‐Su Electric22586 Nov‐09 10/27/2009 11/27/200931378,10412,905356$31,036$0.08?Mat‐Su Electric 22586 Dec‐09 11/28/2009 12/26/200928356,97612,184348$45,881$0.13?Mat‐Su Electric 22586 Jan‐10 12/27/2009 1/25/201029357,36112,19719$40,996$0.11?Mat‐Su Electric 22586 Feb‐10 1/26/2010 2/21/201026311,04510,616844$35,906$0.12?Mat‐Su Electric 22586 Mar‐10 2/22/2010 3/27/201033329,37911,242829$37,104$0.11?Mat‐Su Electric 22586 Apr‐10 3/28/2010 4/26/201029317,99710,853833$33,843$0.11?Mat‐Su Electric 22586 May‐10 4/27/2010 5/24/201027298,77010,197833$32,038$0.11?Mat‐Su Electric 22586 Jun‐10 5/25/2010 6/26/201032208,1287,103488$21,653$0.10?Mat‐Su Electric 22586 Jul‐10 6/27/2010 7/26/201029229,0767,818788$24,074$0.11?Mat‐Su Electric 22586 Aug‐10 7/27/2010 8/27/201031312,12310,653788$33,078$0.11?Mat‐Su Electric 22586 Sep‐10 8/28/2010 9/26/201029325,92411,124825$34,645$0.11?Mat‐Su Electric 22586 Oct‐10 9/27/2010 10/25/201028339,99311,604844$37,615$0.11?Mat‐Su Electric 22586 Nov‐10 10/26/2010 11/27/201032330,63311,285844$36,227$0.11?Mat‐Su Electric 22586 Dec‐10 11/28/2010 12/26/201028367,34212,537840$40,498$0.11?Jan ‐ 09 to Dec ‐ 09 total:4,032,533137,6304,170$586,717?Jan ‐ 10 to Dec ‐ 10 total:3,727,771127,2298,775$407,677?$0.15$0.11Jan ‐ 09 to Dec ‐ 09 avg:Jan ‐ 10 to Dec ‐ 10 avg:
Chugach HS ‐ Electric Consumption (kWh) vs. Electric Cost ($)00.10.20.30.40.50.60.70.80.91Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00 Jan‐00Date (Mon ‐ Yr)Electric Consumption (kWh)00.10.20.30.40.50.60.70.80.91Electric Cost ($)Electric Consumption(kWh)Electric Cost ($)
APPENDIX B
ECO Calculations
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 1.Chugiak High SchoolECO Description:Exterior Lighting (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykWkW $kWhkWh $CCF$ kGal$ mmBtu $551 2,891$ 194,138 23,349$ - -$ - - 663 26,241$ 2. Installation Cost SummaryO&M CostExisting New Labor Material874$ -$ -$ 27,115$ 32,829$ 401,985$ 54,352$ 489,167$ 3. Eliminated Operation and Maintenance Cost40 EA - - Other-$ -$ -$ -$ -$ - EA- - Other-$ -$ -$ -$ -$ 1 LS- - Other-$ -$ 874$ 874$ 874$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost874$ 4. New Operation and Maintenance Cost13 EA 0.3 3.9 Other-$ -$ -$ -$ -$ - EA- - Other-$ -$ -$ -$ -$ 1 LS- - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost-$ Net Material CostAnnual CostMaterial Cost for PMAnnual O&MAnnual PMUnit QtyU/MTotal Labor CostMaterial CostUnit Labor-HrsNet Labor-Hrs TradeLabor Rates ($/Hr)Material CostNet Material CostAnnual CostAnnual O&MO&M TasksLabor Rates ($/Hr)Total Labor CostAnnual PMMaterial Cost for PMConstruction CostsTotal Installed CostO&M TasksUnit QtyU/MUnit Labor-HrsNet Labor-Hrs TradeElectric SavingsNatural Gas SavingsWater Savings Total Energy SavingsM&V Cost Total Cost SavingsInstallation CostsExterior LightingBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 1Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 1.Chugiak High School5. Cost Estimate8 EA 0.8 Electrician 74$ 475$ 480$ 3,840$ 4,315$ 35 EA0.8 Electrician74$ 2,078$ 498$ 17,430$ 19,508$ 115 EA0.8 Electrician74$ 6,828$ 815$ 93,725$ 100,553$ 8 EA0.8 Electrician74$ 475$ 395$ 3,160$ 3,635$ 103 EA0.8 Electrician74$ 6,115$ 1,925$ 198,275$ 204,390$ 269 EA0.2 Electrician74$ 3,993$ -$ -$ 3,993$ 269 EA0.3 Electrician74$ 5,989$ 5$ 1,345$ 7,334$ Total Cost25,952$ 317,775$ 343,727$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeeklyMonthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):30$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:434,815$ Subtotal:343,727$ Supervision, Inspection & Overhead (6.5%): 28,263$ Subcontractor Overhead & Profit (26.5%):91,088$ Design Cost (6%):26,089$ Subtotal:434,815$ Total Installed Cost:489,167$ ReportTotalInstall 221 Watt LED systemFixture, Ballast, Lamp DisposalMisc WiringDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationTest OperationTotal Material CostTotal M&L CostInstall 38 Watt LED systemInstall 56.1 Watt LED systemTradeLabor Rates ($/Hr)Total Labor CostMaterial CostInstall 69 Watt LED systemInstall 37 Watt LED systemU/MUnit Labor-HrsDescriptionUnit QtyExterior LightingBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 2Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 1.Chugiak High School3. Replace 8 - 70W HPS Pole system with 8 - 38 Watt LED system.4. Replace 35 - 100W HPS Can system with 35 - 56.1 Watt LED system.5. Replace 115 - 175W HPS Flood system with 115 - 69 Watt LED system.6. Replace 8 - 70W HPS Wallmount system with 8 - 37 Watt LED system.7. Replace 103 - 400W HPS system with 103 - 221 Watt LED system.Annual Demand (kW) = 950 Annual Demand (kW) = 399 Annual Demand Savings (kW) = 551 Electrical Consumption (kWh) = 334,830 Electrical Consumption (kWh) = 140,693 Electrical Savings (kWh) = 194,138 Natural Gas Consumption (Natural Gas) = - Natural Gas Consumption (Natural Gas) = - Natural Gas Savings (Natural Gas) = - Water Consumption (kGal) = - Water Consumption (kGal) = - Water Savings (kGal) =- Demand Cost =4,987$ Demand Cost =2,095$ Demand Cost Savings =2,891$ Electrical Consumption Cost =40,271$ Electrical Consumption Cost =16,921$ Electrical Cost Savings =23,349$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =26,241$ b. Equations:1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) x (12 months) / (1,000)2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours)3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) x (12 months) / (1,000)6. Annual Cost Savings = (Energy Savings) x (Energy Cost)c. Calculations:Baseline Condition:Proposed Condition:4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours)5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)1. Lighting listed for replacement is HID technology "100 W HPS".2. New lighting will be LED technology "STR LWY 2M HT 04 D SV 43K R".8. Energy Savingsa. Assumptions:Exterior LightingBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 3Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 02.Chugiak High SchoolECO Description:T8 Lighting Upgrade (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykWkW $kWhkWh $CCF$ kGal$ mmBtu $1,243 6,527$ 118,789 14,287$ - -$ - - 405 20,814$ 2. Installation Cost SummaryO&M CostExisting New Labor Material7,987$ 6,694$ -$ 22,107$ 252,346$ 94,290$ 43,330$ 389,966$ 3. Eliminated Operation and Maintenance Cost321 EA 0.3 96.3 Electrician74$ 7,146$ -$ -$ 7,146$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - Other-$ -$ 840$ 840$ 840$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost7,987$ 4. New Operation and Maintenance Cost268 EA 0.3 80.3 Electrician74$ 5,957$ -$ -$ 5,957$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - Other-$ -$ 737$ 737$ 737$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost6,694$ Material Cost for PMNet Labor-HrsTotal Labor CostAnnual O&MAnnual PMUnit QtyU/MMaterial CostNet Material CostAnnual CostAnnual CostAnnual O&MTradeLabor Rates ($/Hr)Annual PMMaterial Cost for PMO&M TasksUnit Labor-HrsLabor Rates ($/Hr)Total Labor CostMaterial CostNet Material CostConstruction CostsTotal Installed CostO&M TasksUnit QtyU/MUnit Labor-HrsNet Labor-Hrs TradeElectric SavingsNatural Gas SavingsWater Savings Total Energy SavingsM&V Cost Total Cost SavingsInstallation CostsT8 Lighting Upgrade Bldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 4Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 02.Chugiak High School5. Cost Estimate535 EA 1.0 Electrician74$ 39,704$ 32$ 16,858$ 56,562$ 13 EA1.0 Electrician74$ 965$ 29$ 374$ 1,339$ 1,277 EA1.0 Electrician74$ 94,769$ 22$ 27,570$ 122,340$ 860 EA1.0 Electrician74$ 63,823$ 19$ 16,202$ 80,025$ - EA1.0 Electrician74$ -$ 35$ -$ -$ - EA1.0 Electrician74$ -$ 24$ -$ -$ 3 EA1.0 Electrician74$ 223$ 31$ 93$ 316$ - EA1.0 Electrician74$ -$ 24$ -$ -$ 2,688 LS- Other-$ -$ -$ -$ -$ 2,688 LS- Other-$ -$ 5$ 13,440$ 13,440$ Total Cost199,483$ 74,538$ 274,021$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeeklyMonthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:346,637$ Subtotal:274,021$ Supervision, Inspection & Overhead (6.5%): 22,531$ Subcontractor Overhead & Profit (26.5%):72,616$ Design Cost (6%):20,798$ Subtotal:346,637$ Total Installed Cost:389,966$ TotalInspect EquipmentRecord OperationTest OperationReportFixture, Ballast, Lamp DisposalMisc WiringDutiesLabor Requirement (Hours)Install 8ft 2 lamp T-8 systemInstall 8ft 1 lamp T-8 systemInstall 2ft 2 lamp T-8 systemInstall 2ft 1 lamp T-8 systemInstall 4ft 4 lamp T-8 systemInstall 4ft 3 lamp T-8 systemInstall 4ft 2 lamp T-8 systemInstall 4ft 1 lamp T-8 systemDescriptionUnit QtyTotal Material CostTotal M&L CostU/MUnit Labor-HrsTradeLabor Rates ($/Hr)Total Labor CostMaterial CostT8 Lighting Upgrade Bldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 5Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 02.Chugiak High School3. Replace 535 - 4ft 4 lamp T-12 system with 535 - 4ft 4 lamp T-8 system.4. Replace 13 - 4ft 3 lamp T-12 system with 13 - 4ft 3 lamp T-8 system.5. Replace 1277 - 4ft 2 lamp T-12 system with 1277 - 4ft 2 lamp T-8 system.6. Replace 860 - 4ft 1 lamp T-12 system with 860 - 4ft 1 lamp T-8 system.7. Replace 0 - 8ft 2 lamp T-12 system with 0 - 8ft 2 lamp T-8 system.8. Replace 0 - 8ft 1 lamp T-12 system with 0 - 8ft 1 lamp T-8 system.9. Replace 3 - 2ft 2 lamp T-12 U system with 3 - 2ft 2 lamp T-8 system.10. Replace 0 - 2ft 1 lamp T-12 U system with 0 - 2ft 1 lamp T-8 system.Annual Demand (kW) = 3,292 Annual Demand (kW) = 2,049 Annual Demand (kW) = 1,243 Electrical Consumption (kWh) =314,530 Electrical Consumption (kWh) =195,740 Electrical Savings (kWh) =118,789 Natural Gas Consumption (Natural Gas) =- Natural Gas Consumption (Natural Gas) =- Natural Gas Savings (Natural Gas) =- Water Consumption (kGal) =- Water Consumption (kGal) =- Water Savings (kGal) =- Demand Cost =17,282$ Demand Cost =10,755$ Demand Cost Savings =6,527$ Electrical Consumption Cost =37,829$ Electrical Consumption Cost =23,542$ Electrical Cost Savings =14,287$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =20,814$ c. Calculations:Baseline Condition:Proposed Condition:3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) x (12 months) / (1,000)4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours)5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)6. Annual Cost Savings = (Energy Savings) x (Energy Cost)b. Equations:1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) x (12 months)/ (1,000)2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours)2. New lighting will be T8 technology with electronic ballast.24. Fixtures average hours per year.25. Electrical consumption costs $0.120272/kWh.26. Electrical demand costs $5.25/kW.8. Energy Savingsa. Assumptions:1. Lighting listed for replacement is T12 technology with magnetic ballast.T8 Lighting Upgrade Bldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 6Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 03.Chugiak High SchoolECO Description:T5 Lighting Uprgrade (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykWkW $kWhkWh $CCF$ kGal$ mmBtu $144 758$ 19,715 2,371$ - -$ - - 67 3,129$ 2. Installation Cost SummaryO&M CostExisting New Labor Material270$ 946$ -$ 2,453$ 11,172$ 19,883$ 3,882$ 34,937$ 3. Eliminated Operation and Maintenance Cost7 EA 0.3 2.0 Electrician74$ 151$ -$ -$ 151$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - -148$ -$ 118$ 118$ 118$ Total Cost270$ 4. New Operation and Maintenance Cost43 EA 0.3 12.8 Electrician74$ 946$ -$ -$ 946$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - Electrician74$ -$ -$ -$ -$ Total Cost946$ Material Cost for PMTotal Labor CostAnnual PMMaterial CostNet Material CostAnnual CostAnnual O&MUnit QtyU/MUnit Labor-HrsNet Labor-Hrs TradeLabor Rates ($/Hr)Annual PMMaterial Cost for PMO&M TasksLabor Rates ($/Hr)Annual O&MTotal Labor CostTradeMaterial CostNet Material CostAnnual CostConstruction CostsTotal Installed CostO&M TasksUnit QtyU/MUnit Labor-HrsNet Labor-HrsElectric SavingsNatural Gas SavingsWater Savings Total Energy SavingsM&V Cost Total Cost SavingsInstallation CostsT5 Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 7Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 03.Chugiak High School5. Cost Estimate36 EA 0.8 Electrician 74$ 2,137$ 188$ 6,768$ 8,905$ 40 EA0.8 Electrician74$ 2,375$ 188$ 7,520$ 9,895$ 7 EA1.8 Electrician74$ 935$ 150$ 1,050$ 1,985$ 76 EA0.3 Electrician74$ 1,692$ -$ -$ 1,692$ 76 EA0.3 Electrician74$ 1,692$ 5$ 380$ 2,072$ Total Cost8,831$ 15,718$ 24,549$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeeklyMonthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:31,055$ Subtotal:24,549$ Supervision, Inspection & Overhead (6.5%): 2,019$ Subcontractor Overhead & Profit (26.5%):6,506$ Design Cost (6%):1,863$ Subtotal:31,055$ Total Installed Cost:34,937$ ReportTotalInstall 4ft 6 lamp T-5 systemFixture, Ballast, Lamp DisposalMisc WiringDutiesLabor Requirement (Hours)Inspect EquipmentInstall 4ft 9 lamp T-5 systemRecord OperationTest OperationTotal Material CostTotal M&L CostInstall 4ft 6 lamp T-5 systemU/MUnit Labor-HrsTradeLabor Rates ($/Hr)Total Labor CostMaterial CostDescriptionUnit QtyT5 Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 8Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 03.Chugiak High School3. Replace 36 - 400W HPS system with 36 - 4ft 6 lamp T-5 system.4. Replace 40 - 400W MH system with 40 - 4ft 6 lamp T-5 system.5. Replace 7 - 1000W MV system with 7 - 4ft 9 lamp T-5 system.Annual Demand (kW) = 509 Annual Demand (kW) = 365 Annual Demand Savings (kW) = 144 Electrical Consumption (kWh) = 69,504 Electrical Consumption (kWh) = 49,789 Electrical Savings (kWh) = 19,715 Natural Gas Consumption (Natural Gas) = - Natural Gas Consumption (Natural Gas) = - Natural Gas Savings (Natural Gas) = - Water Consumption (kGal) = - Water Consumption (kGal) = - Water Savings (kGal) =- Demand Cost =2,673$ Demand Cost =1,915$ Demand Cost Savings =758$ Electrical Consumption Cost =8,359$ Electrical Consumption Cost =5,988$ Electrical Cost Savings =2,371$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =3,129$ 6. Annual Cost Savings = (Energy Savings) x (Energy Cost)c. Calculations:Baseline Condition:Proposed Condition:b. Equations:1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) x (12 months) / (1,000)2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours)3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) x (12 months) / (1,000)4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours)5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)1. Lighting listed for replacement is HID technology.2. New lighting will be T5 technology.6. Fixtures average 1638 hours per year.7. Electrical consumption costs $0.120272/kWh.8. Electrical demand costs $5.25/kW.8. Energy Savingsa. Assumptions:T5 Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 9Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 04.Chugiak High SchoolECO Description:CFL Lighting Upgrade (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykWkW $kWhkWh $CCF$ kGal$ mmBtu $132 696$ 12,658 1,522$ - -$ - - 43 2,218$ 2. Installation Cost SummaryO&M CostExisting New Labor Material1,021$ 580$ -$ 2,659$ 5,182$ 1,217$ 800$ 7,199$ 3. Eliminated Operation and Maintenance Cost42 EA 0.3 12.7 Electrician74$ 939$ -$ -$ 939$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - Electrician74$ -$ 82$ 82$ 82$ Total Cost1,021$ 4. New Operation and Maintenance Cost21 EA 0.3 6.3 Electrician74$ 470$ -$ -$ 470$ - EA- - Electrician74$ -$ -$ -$ -$ 1 LS- - Electrician74$ -$ 110$ 110$ 110$ Total Cost580$ Total Cost SavingsInstallation CostsNet Labor-Hrs TradeElectric SavingsNatural Gas SavingsWater Savings Total Energy SavingsM&V CostMaterial CostNet Material CostAnnual CostAnnual O&MConstruction CostsTotal Installed CostO&M TasksUnit QtyU/MUnit Labor-HrsO&M TasksLabor Rates ($/Hr)Total Labor CostAnnual PMMaterial Cost for PMUnit Labor-HrsNet Labor-HrsNet Material CostAnnual CostTradeLabor Rates ($/Hr)Annual O&MAnnual PMUnit QtyU/MMaterial Cost for PMTotal Labor CostMaterial CostCFL Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 10Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 04.Chugiak High School5. Cost Estimate26 EA 0.3 Electrician 74$ 579$ 11$ 292$ 871$ 57 EA0.3 Electrician74$ 1,269$ 2$ 88$ 1,357$ 37 EA0.3 Electrician74$ 824$ 7$ 254$ 1,078$ 34 EA0.3 Electrician74$ 757$ 5$ 176$ 933$ 30 EA0.3 Electrician74$ 668$ 5$ 152$ 820$ Total Cost4,097$ 962$ 5,059$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeeklyMonthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:6,399$ Subtotal:5,059$ Supervision, Inspection & Overhead (6.5%):416$ Subcontractor Overhead & Profit (26.5%):1,341$ Design Cost (6%):384$ Subtotal:6,399$ Total Installed Cost:7,199$ Install 16 W CFLInstall 23 W CFLU/MUnit Labor-HrsDescriptionUnit QtyTotal Material CostTotal M&L CostInstall 5 W CFLInstall 13 W CFLTradeLabor Rates ($/Hr)Total Labor CostMaterial CostInstall 23 W CFLDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationTest OperationReportTotalCFL Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 11Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 04.Chugiak High School3. Replace 26 - 30W Incandescent with 26 - 5 W CFL.4. Replace 57 - 60W Incandescent with 57 - 13 W CFL.5. Replace 37 - 75W Incandescent with 37 - 16 W CFL.6. Replace 34 - 100W Incandescent with 34 - 23 W CFL.7. Replace 30 - 120W Incandescent Flood with 30 - 23 W CFL.Annual Demand (kW) = 168 Annual Demand (kW) = 35 Annual Demand Savings (kW) = 132 Electrical Consumption (kWh) = 16,024 Electrical Consumption (kWh) = 3,365 Electrical Savings (kWh) = 12,658 Natural Gas Consumption (Natural Gas) = - Natural Gas Consumption (Natural Gas) = - Natural Gas Savings (Natural Gas) = - Water Consumption (kGal) = - Water Consumption (kGal) = - Water Savings (kGal) =- Demand Cost =880$ Demand Cost =185$ Demand Cost Savings =696$ Electrical Consumption Cost =1,927$ Electrical Consumption Cost =405$ Electrical Cost Savings =1,522$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =2,218$ 8. Energy Savingsa. Assumptions:c. Calculations:Baseline Condition:Proposed Condition:1. Lighting listed for replacement is Incandescent technology.2. New lighting will be CFL technology.b. Equations:1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) x (12 months) / (1,000)6. Annual Cost Savings = (Energy Savings) x (Energy Cost)2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours)3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) x (12 months) / (1,000)4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours)5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)CFL Lighting UpgradeBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 12Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 05Chugiak High School1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $ kGal$ mmBtu $- -$ 119,573 14,381$ - -$ - - 408 14,381$ 2. Installation Cost SummaryExisting NewLabor Material-$ 1,195$ -$ 13,186$ 30,569$ 68,722$ 12,411$ 111,702$ 3. Eliminated Operation and Maintenance Cost- EA- - Electrician74$ -$ -$ -$ -$ - EA- - Electrician74$ -$ -$ -$ -$ - LS- - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance Cost- EA- - Electrician74$ -$ -$ -$ -$ 322 EA0.1 16.1 Electrician74$ 1,195$ -$ -$ 1,195$ - LS- - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ - - - Electrician74$ -$ -$ -$ -$ 1,195$ Total Installed CostECO Description:Occupancy Sensors (Bldg Chugiak High School)Applicable Building:Electric SavingsNatural Gas Savings Water SavingsMaterial CostNet Material CostAnnual CostTotal Energy SavingsO&M CostM&V CostTotal Cost SavingsInstallation CostsConstruction CostsLabor Rates ($/Hr)Total Labor CostO&M TasksUnit Qty U/MUnit Labor-HrsNet Labor-Hrs TradeDaily O&MAnnual PMMaterial Cost for PMMaterial Cost for PMTotal CostO&M TasksUnit Qty U/MUnit Labor-HrsNet Labor-Hrs TradeLabor Rates ($/Hr)Net Material CostAnnual CostDaily O&MAnnual PMTotal Labor CostMaterial CostTotal CostInstall Occupancy SensorsBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 13Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 055. Cost Estimate129 EA 0.3 74$ Electrician 3,159$ 49$ 6,315$ 9,474$ 42 EA0.3 74$ Electrician 1,029$ 76$ 3,182$ 4,210$ 150 EA1.1 74$ Electrician 12,724$ 138$ 20,769$ 33,493$ 1 EA1.1 74$ Electrician85$ 164$ 164$ 249$ - EA1.1 74$ Electrician-$ 109$ -$ -$ 322 EA0.3 74$ Electrician 7,169$ 74$ 23,896$ 31,065$ 24,165$ 54,326$ 78,491$ 6. Measurement and Verification Cost- Daily Weekly Monthly Quarterly Semi-Annual Annual Total 50$ - - - - - - - -$ - - - - - - - -$ - - - - - - - -$ - - - - - - - - - - - - - - 7. Project Markups-$ -$ -$ 99,291$ 78,491$ 6,454$ 20,800$ 5,957$ 99,291$ 111,702$ Ceiling Mount Passive Infrared Occ SensorCeiling Mount Dual Technology Occ SensorCorner Mount Passive Infrared Occ SensorMisc WiringDescriptionUnit Qty U/MMaterial CostTotal Material CostTotal M&L CostWall Mount Passive Infrared Occ SensorTotal Labor CostWall Mount Dual Technology Occ SensorUnit Labor-HrsLabor Rates ($/Hr)TradeTotal CostSales Tax (0%):Bond (0%):Record OperationReportTotalLabor Requirement (Hours)Annual Material/Equipment Cost ($):DutiesTest OperationTotal Annual M&V Cost ($):Annual Labor Requirement (Hrs):Labor Rate ($Hr):Inspect EquipmentAnnual Labor Cost ($):Subcontractor Contingency (0%):Subtotal:Subtotal:Supervision, Inspection & Overhead (6.5%):Subcontractor Overhead & Profit (26.5%):Design Cost (6%):Subtotal:Total Installed Cost:Install Occupancy SensorsBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 14Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 05a. Assumptions:1. Spaces can have occupancy sensors installed to reduce lighting usage.2. Passive Infared (PIR) sensors are used in corridors and rooms with open floor plans.3. Dual technology sensors are used in larger rooms and areas where occupants could potentially be shielded from the PIR on the sensor.4. Percent savings estimates are from the Energy Management Handbook, Turner, 3rd Edition.b. Equations:1. Baseline Usage (kWh) = (Existing Fixture Wattage) x (Qty) x (Existing Hours) / (1,000)2. Proposed Usage (kWh) = (Existing Fixture Wattage) x (Qty) x [(Existing Hours) - (Hours Reduced)] / (1,000)3. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)4. Annual Cost Savings = (Energy Savings) x (Energy Cost)- - - 415,823 296,250 Electrical Consumption Savings (kWh) = 119,573 - - Natural Gas Savings (CCF) =- - - Water Savings (kGal) =- -$ Demand Cost Savings =-$ 50,012$ 35,631$ Electrical Consumption Cost Savings = 14,381$ -$ -$ Natural Gas Cost Savings =-$ -$ -$ Water Cost Savings =-$ Total Cost Savings =14,381$ Proposed Condition:Demand Cost =Demand Cost =8. Energy Savingsc. Calculations:Demand Savings (kW) =Electrical Consumption (kWh) = Electrical Consumption (kWh) =Demand (kW) = Demand (kW) =Baseline Condition:Natural Gas Consumption Cost = Natural Gas Consumption Cost =Water Consumption Cost = Water Consumption Cost =Natural Gas Consumption (CCF) = Natural Gas Consumption (CCF) =Electrical Consumption Cost = Electrical Consumption Cost =Water Consumption (kGal) = Water Consumption (kGal) =Install Occupancy Sensors Bldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 15Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 07.Chugiak High SchoolECO Description:Vending Miser Controls (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykWkW $kWhkWh $CCF$ kGal$ mmBtu $3 18$ 29,589 3,559$ - -$ - - 101 3,576$ 2. Installation Cost SummaryO&M CostExisting New Labor Material-$ 534$ -$ 3,042$ 1,690$ 4,004$ 712$ 6,405$ 3. Eliminated Operation and Maintenance Cost- EA - - Electrician74$ -$ -$ -$ -$ - EA- - Electrician74$ -$ -$ -$ -$ - LS- - Electrician74$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost- EA - - Electrician74$ -$ -$ -$ -$ 18 EA0.2 3.6 Electrician74$ 267$ -$ -$ 267$ 18 EA0.2 3.6 Electrician74$ 267$ -$ -$ 267$ Total Cost534$ Electric SavingsNatural Gas SavingsWater Savings Total Energy SavingsM&V Cost Total Cost SavingsInstallation CostsNet Material CostAnnual CostAnnual O&MConstruction CostsTotal Installed CostO&M TasksUnit QtyU/MUnit Labor-HrsNet Labor-HrsTotal Labor CostMaterial CostTradeMaterial CostLabor Rates ($/Hr)Annual PMMaterial Cost for PMO&M TasksLabor Rates ($/Hr)Annual CostAnnual O&MAnnual PMUnit QtyU/MUnit Labor-HrsNet Labor-Hrs TradeTotal Labor CostSemi-Annual PMNet Material CostVending Miser ControlsChugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 16Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 07.Chugiak High School5. Cost Estimate15 EA 1.0 Electrician 74$ 1,113$ 179$ 2,685$ 3,798$ 3 EA1.0 Electrician74$ 223$ 160$ 480$ 703$ Total Cost1,336$ 3,165$ 4,501$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeeklyMonthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):30$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:5,694$ Subtotal:4,501$ Supervision, Inspection & Overhead (6.5%):370$ Subcontractor Overhead & Profit (26.5%):1,193$ Design Cost (6%):342$ Subtotal:5,694$ Total Installed Cost:6,405$ DescriptionUnit QtyTotal Material CostTotal M&L CostTotal Labor CostMaterial CostU/MUnit Labor-HrsInstall Soda Machine Vending Miser Kit(s)Install Snack Machine Vending Miser Kit(s)TradeLabor Rates ($/Hr)DutiesLabor Requirement (Hours)TotalInspect EquipmentRecord OperationTest OperationReportVending Miser ControlsChugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 17Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 07.Chugiak High School4. Install 15 - Soda Machine Vending Miser Kit(s) on 15 - Standard Soda Machine(s).5. Install 3 - Snack Machine Vending Miser Kit(s) on 3 - Standard Snack Machine(s).6. Install 0 - Soda Machine Vending Miser Kit(s) on 0 - Delamped Soda Machine(s).Annual Demand (kW) = 6 Annual Demand (kW) = 3 Annual Demand Savings (kW) = 3 Electrical Consumption (kWh) = 54,794 Electrical Consumption (kWh) = 25,205 Electrical Savings (kWh) = 29,589 Natural Gas Consumption (Natural Gas) = - Natural Gas Consumption (Natural Gas) = - Natural Gas Savings (Natural Gas) = - Water Consumption (kGal) = - Water Consumption (kGal) = - Water Savings (kGal) =- Demand Cost =33$ Demand Cost =15$ Demand Cost Savings =18$ Electrical Consumption Cost =6,590$ Electrical Consumption Cost =3,031$ Electrical Cost Savings =3,559$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =3,576$ 8. Energy Savingsa. Assumptions:1. Soda vending machines consume an average of 400W, delamped soda machines 220W, and snack machines 85W.9. Electrical demand costs $5.25/kW.b. Equations:1. Baseline Demand (kW) = (Existing Fixture Wattage) x (Qty) x (12 months) / (1,000)2. Vending machines operate 8,760 hours/year.3. VendingMisers® will reduce run hours to 4730.4 hours or by 46%.7. Machines average 8760 hours per year.8. Electrical consumption costs $0.120272/kWh.6. Annual Cost Savings = (Energy Savings) x (Energy Cost)c. Calculations:Baseline Condition:Proposed Condition:2. Baseline Usage (kWh) = (Baseline Demand) x (Fixture Hours)3. Proposed Demand (kW) = (Proposed Fixture Wattage) x (Qty) x (12 months) / (1,000)4. Proposed Usage (kWh) = (Proposed Demand) x (Fixture Hours)5. Annual Energy Savings = (Baseline Energy Usage) - (Proposed Energy Usage)Vending Miser ControlsChugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 18Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:E08.Chugiak High SchoolECO Description:Premium Efficiency Motors (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$mmBtu$8 41$ 55,262 6,646$ - -$ - - 189 6,688$ 2. Installation Cost SummaryExisting NewLabor Material11$ 11$ -$ 6,688$ 9,435$ 53,119$ 7,819$ 70,373$ 3. Eliminated Operation and Maintenance Cost1 LS 0.4 0.4 Electrician 30$ 11$ -$ -$ 11$ 11$ 4. New Operation and Maintenance Cost1 LS 0.4 0.4 Electrician 30$ 11$ -$ -$ 11$ 11$ Electric SavingsNatural Gas SavingsWater SavingsTotal Energy SavingsConstruction CostsTotal Installed CostO&M CostM&V CostTotal Cost SavingsInstallation CostsAnnual CostAnnual PMO&M TasksUnit Qty U/M Unit Labor-Hrs Net Labor-Hrs TradeTotal CostLabor Rates ($/Hr)Total Labor Cost Material CostNet Material CostAnnual CostAnnual PMO&M TasksUnit Qty U/M Unit Labor-Hrs Net Labor-Hrs TradeLabor Rates ($/Hr)Total Labor Cost Material CostNet Material CostTotal CostChugiak High SchoolPage 1Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 19Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:E08.Chugiak High School5. Cost Estimate7 LS 1.5 74$ 779$ 654$ 4,578$ 5,357$ 9 LS 2.0 74$ 1,336$ 793$ 7,137$ 8,473$ 8 LS 2.0 74$ 1,187$ 340$ 2,720$ 3,907$ 7 LS 2.0 74$ 1,039$ 926$ 6,482$ 7,521$ 8 LS 3.0 74$ 1,781$ 1,419$ 11,352$ 13,133$ 3 LS 3.0 74$ 668$ 1,440$ 4,320$ 4,988$ 2 LS 3.0 74$ 445$ 2,701$ 5,402$ 5,847$ 1 LS 3.0 74$ 223$ -$ -$ 223$ 1 LS 4.0 74$ 297$ -$ -$ 297$ 7,458$ 41,991$ 49,449$ 6. Project Markups-$ -$ -$ 62,553$ 49,449$ 4,066$ 13,104$ 3,753$ 62,553$ 70,373$ 2 horseDescription Unit Qty U/M Material CostTotal Material CostTotal M&L Cost1.5 horseUnit Labor-HrsLabor Rates ($/Hr)Total Labor Cost3 horse5 horse7.5 horse10 horse15 horse30 horseTotal CostSubcontractor Contingency (0%):Subtotal:Sales Tax (0%): Bond (0%):Total Installed Cost:7. Energy Savingsa. Assumptions:3. Proposed motors & efficiencies: (7) 1.5-hp @ 86.5%; (9) 2-hp @ 86.5%; (8) 3-hp @ 89.5%; (7) 5-hp @ 89.5%; (8) 7.5-hp @ 91.7%; (3) 10-hp @ 91.7%; (2) 15-hp @ 93%; (1) 30-hp @ 94.1%; (1) 40-hp @ 94.1%4. Motor load factor = 80%Subtotal:Supervision, Inspection & Overhead (6.5%):Subcontractor Overhead & Profit (26.5%): Design Cost (6%):Subtotal:1. This ECO considers replacing existing motors with NEMA premium efficiency motors.2. Existing motors & efficiencies: (7) 1.5-hp @ 80-84%; (9) 2-hp @ 80-82.5%; (8) 3-hp @ 82.5%; (7) 5-hp @ 82.5%; (8) 7.5-hp@89.5; (3) 10-hp @ 89.5%; (2) 15-hp @ 88.5%; (1) 30-hp @ 92.4%; (1) 40-hp @ 93%40 horse4. Pump annual operating hours = 87606. Electrical demand costs = $5.25/kW.7. Electrical consumption costs = $0.120272/kWh.Chugiak High SchoolPage 2Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 20Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:E08.Chugiak High School189.34 181.44 7.90 Electrical Consumption (kWh) = 1,394,161.99 Electrical Consumption (kWh) =1,338,900.42 55,262 Fuel Consumption (mmBtu) =- Fuel Consumption (mmBtu) =- Fuel Savings (mmBtu) =- Water Consumption (kGal) =- Water Consumption (kGal) =- Water Savings (kGal) =- Demand Cost =994$ Demand Cost =953$ Demand Cost Savings =41$ Electrical Consumption Cost =167,679$ Electrical Consumption Cost =161,032$ Electrical Consumption Cost Savings =6,646$ Fuel Consumption Cost =-$ Fuel Consumption Cost =-$ Fuel Cost Savings =-$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =6,688$ c. Calculations:Proposed Condition:Demand (kW) = Demand (kW) = Demand Savings (kW) =Electrical Consumption Savings (kWh) =2. Existing/Proposed Motor Consumption (kWh) = (Motor Demand) x (Diversity Factor) x (Annual Hours)3. kW Savings = [(Baseline kW) - ( Proposed kW)] x 12Baseline Condition:b. Equations:1. Existing/Proposed Motor Demand (kW) = (Motor HP) x (Load Factor) x (0.746 kW/HP)/ Motor Efficiency4. kWh Savings = (Baseline kWh) - ( Proposed kWh)5. Energy Cost Savings = Energy Savings (kW or kWh) x (Energy Unit Cost)Chugiak High School Page 3Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 21Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 09ECO Description:Install Primary/Secondary Pumping020 Boiler Rm1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$ mmBtu $38 201$ 25,373 3,052$ - -$ - - 87 3,253$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 3,253$ 6,761$ 5,819$ 1,573$ 14,153$ 3. Eliminated Operation and Maintenance CostEA0.5 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance CostEA0.3 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ M&V CostDaily O&MO&M TasksUnit QtyConstruction CostsU/MO&M CostTotal Energy SavingsAnnual PMMaterial Cost for PMTotal Installed CostTradeElectric SavingsNatural Gas SavingsAnnual PMUnit QtyWater SavingsU/MInstallation CostsTotal Cost SavingsTotal Labor CostO&M TasksTradeAnnual CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostAnnual CostTotal CostNet Material CostNet Labor-HrsDaily O&MUnit Labor-HrsMaterial Cost for PMApplicable Building:Unit Labor-Hrs Net Labor-HrsTotal CostMaterial CostLabor Rates ($/Hr)020 Boiler RmPage 1Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 22Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 095. Cost EstimateVFD 7.5 HP2 EA 11.9 Electrician 74$ 1,772$ 1,375$ 2,750$ 4,522$ 1 LS30.0 Mechanical84$ 2,534$ 1,800$ 1,800$ 4,334$ 1 LS10.0 Electrician74$ 742$ 50$ 50$ 792$ 2 2.0 Electrician74$ 297$ -$ -$ 297$ Total Cost5,345$ 4,600$ 9,945$ 6. Project Markups-$ -$ -$ 12,580$ 9,945$ 818$ 2,635$ 755$ 12,580$ 14,153$ 4. The heating water system operates 1667.5 hours per year.5. The heating water demand is 100% of capacity at the design OAT and 0% at 62°F, and the load profile is linear between these points.Controls SetupMisc. piping & InstrumentationDescriptionU/MUnit QtySales Tax (0%):7. Energy SavingsTotal Installed Cost:Design Cost (6%):TradeLabor Rates ($/Hr)3. Proposed pump system will be a 0 hp primary pump with 0 ft of head and a 7.5 hp secondary pump with 54 ft of head. The secondary pump will operate with a VFD to modulate flow based on heating water demand.Material CostBond (0%):Pump Motor WiringSupervision, Inspection & Overhead (6.5%):Total M&L CostTotal Labor CostTotal Material CostUnit Labor-Hrs7. Electrical demand costs = $8.89/kW.2. Existing pumping system is rated at 7.5 hp with flow of 358 gpm, 54 ft. of head, and 88.5% efficiency.6. Electrical consumption costs = $0.0356/kWh.Subcontractor Contingency (0%):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:1. 30-year weather bin data for Anchorage AK (nearest available NOAA station) applies.Subtotal:a. Assumptions:020 Boiler RmPage 2Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 23Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 093. Motor Load Factor = (Chilled Water Load (%) / 100%)^355.8 17.4 38.4 39,652 14,279 25,373 - - -$ - - - 293$ 91$ 201$ 4,769$ 1,717$ 3,052$ -$ -$ -$ -$ 3,253$ 5. kWh Saved = Existing kWh Usage - Proposed kWh Usage6. Annual Cost Savings = kWh Saved x kWh Unit CostWater Consumption Cost =Water Consumption Cost =Natural Gas Consumption Cost =Electrical Consumption Savings (kWh) = Propane Consumption (Gal) =Water Savings (kGal) =Water Consumption (kGal) =Demand Cost Savings =Water Consumption (kGal) =Demand Cost =Demand Cost =Electrical Consumption (kWh) =Total Cost Savings =Electrical Consumption Cost =Natural Gas Cost Savings =Natural Gas Consumption Cost =Water Cost Savings =Electrical Consumption Cost Savings =Propane Savings (Gal) =c. Calculations:1. Pump horsepower (hp) = (Pump flow (gpm) x Total Dynamic Head (ft.)) / (3960 x Pump Eff.)b. Equations:2. Baseline Usage (kWh) = Baseline Pump HP x 0.746 x Operating HoursSavings:4. Proposed Usage= (Primary Pump HP x 0.746 x Hours) + (Secondary Pump HP x 0.746 X Hours x Motor Load Factor)7. Monthly Demand Savings = Baseline Demand - Demand at Peak OAT for MonthDemand (kW) =Demand (kW) =Electrical Consumption (kWh) =Baseline Condition:Electrical Consumption Cost =Propane Consumption (Gal) =Demand Savings (kW) =Proposed Condition:020 Boiler RmPage 3Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 24Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 09ECO Description:Install Primary/Secondary PumpingD110 Boiler Rm1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$ mmBtu $24 127$ 16,016 1,926$ - -$ - - 55 2,054$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 2,054$ 6,397$ 5,250$ 1,456$ 13,102$ 3. Eliminated Operation and Maintenance CostEA0.5 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance CostEA0.3 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ M&V CostDaily O&MO&M TasksUnit QtyConstruction CostsU/MO&M CostTotal Energy SavingsAnnual PMMaterial Cost for PMTotal Installed CostTradeElectric SavingsNatural Gas SavingsAnnual PMUnit QtyWater SavingsU/MInstallation CostsTotal Cost SavingsTotal Labor CostO&M TasksTradeAnnual CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostAnnual CostTotal CostNet Material CostNet Labor-HrsDaily O&MUnit Labor-HrsMaterial Cost for PMApplicable Building:Unit Labor-Hrs Net Labor-HrsTotal CostMaterial CostLabor Rates ($/Hr)D110 Boiler RmPage 4Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 25Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 095. Cost EstimateVFD 5 HP2 EA 10.0 Electrician 74$ 1,484$ 1,150$ 2,300$ 3,784$ 1 LS30.0 Mechanical84$ 2,534$ 1,800$ 1,800$ 4,334$ 1 LS10.0 Electrician74$ 742$ 50$ 50$ 792$ 2 2.0 Electrician74$ 297$ -$ -$ 297$ Total Cost5,057$ 4,150$ 9,207$ 6. Project Markups-$ -$ -$ 11,647$ 9,207$ 757$ 2,440$ 699$ 11,647$ 13,102$ 4. The heating water system operates 1667.5 hours per year.5. The heating water demand is 100% of capacity at the design OAT and 0% at 62°F, and the load profile is linear between these points.Controls SetupMisc. piping & InstrumentationDescriptionU/MUnit QtySales Tax (0%):7. Energy SavingsTotal Installed Cost:Design Cost (6%):TradeLabor Rates ($/Hr)3. Proposed pump system will be a 0 hp primary pump with 0 ft of head and a 5 hp secondary pump with 50 ft of head. The secondary pump will operate with a VFD to modulate flow based on heating water demand.Material CostBond (0%):Pump Motor WiringSupervision, Inspection & Overhead (6.5%):Total M&L CostTotal Labor CostTotal Material CostUnit Labor-Hrs7. Electrical demand costs = $8.89/kW.2. Existing pumping system is rated at 5 hp with flow of 240 gpm, 50 ft. of head, and 87.5% efficiency.6. Electrical consumption costs = $0.0356/kWh.Subcontractor Contingency (0%):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:1. 30-year weather bin data for Anchorage AK (nearest available NOAA station) applies.Subtotal:a. Assumptions:D110 Boiler RmPage 5Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 26Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 093. Motor Load Factor = (Chilled Water Load (%) / 100%)^335.4 11.2 24.2 25,179 9,163 16,016 - - -$ - - - 186$ 59$ 127$ 3,028$ 1,102$ 1,926$ -$ -$ -$ -$ 2,054$ 5. kWh Saved = Existing kWh Usage - Proposed kWh Usage6. Annual Cost Savings = kWh Saved x kWh Unit CostWater Consumption Cost =Water Consumption Cost =Natural Gas Consumption Cost =Electrical Consumption Savings (kWh) = Propane Consumption (Gal) =Water Savings (kGal) =Water Consumption (kGal) =Demand Cost Savings =Water Consumption (kGal) =Demand Cost =Demand Cost =Electrical Consumption (kWh) =Total Cost Savings =Electrical Consumption Cost =Natural Gas Cost Savings =Natural Gas Consumption Cost =Water Cost Savings =Electrical Consumption Cost Savings =Propane Savings (Gal) =c. Calculations:1. Pump horsepower (hp) = (Pump flow (gpm) x Total Dynamic Head (ft.)) / (3960 x Pump Eff.)b. Equations:2. Baseline Usage (kWh) = Baseline Pump HP x 0.746 x Operating HoursSavings:4. Proposed Usage= (Primary Pump HP x 0.746 x Hours) + (Secondary Pump HP x 0.746 X Hours x Motor Load Factor)7. Monthly Demand Savings = Baseline Demand - Demand at Peak OAT for MonthDemand (kW) =Demand (kW) =Electrical Consumption (kWh) =Baseline Condition:Electrical Consumption Cost =Propane Consumption (Gal) =Demand Savings (kW) =Proposed Condition:D110 Boiler RmPage 6Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 27Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 09ECO Description:Install Primary/Secondary PumpingF211 Fan Rm1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$ mmBtu $35 185$ 23,262 2,798$ - -$ - - 79 2,983$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 2,983$ 6,761$ 6,452$ 1,652$ 14,864$ 3. Eliminated Operation and Maintenance CostEA0.5 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance CostEA0.3 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ M&V CostDaily O&MO&M TasksUnit QtyConstruction CostsU/MO&M CostTotal Energy SavingsAnnual PMMaterial Cost for PMTotal Installed CostTradeElectric SavingsNatural Gas SavingsAnnual PMUnit QtyWater SavingsU/MInstallation CostsTotal Cost SavingsTotal Labor CostO&M TasksTradeAnnual CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostAnnual CostTotal CostNet Material CostNet Labor-HrsDaily O&MUnit Labor-HrsMaterial Cost for PMApplicable Building:Unit Labor-Hrs Net Labor-HrsTotal CostMaterial CostLabor Rates ($/Hr)F211 Fan RmPage 7Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 28Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 095. Cost EstimateVFD 10 HP2 EA 11.9 Electrician 74$ 1,772$ 1,625$ 3,250$ 5,022$ 1 LS30.0 Mechanical84$ 2,534$ 1,800$ 1,800$ 4,334$ 1 LS10.0 Electrician74$ 742$ 50$ 50$ 792$ 2 2.0 Electrician74$ 297$ -$ -$ 297$ Total Cost5,345$ 5,100$ 10,445$ 6. Project Markups-$ -$ -$ 13,213$ 10,445$ 859$ 2,768$ 793$ 13,213$ 14,864$ 4. The heating water system operates 1667.5 hours per year.5. The heating water demand is 100% of capacity at the design OAT and 0% at 62°F, and the load profile is linear between these points.Controls SetupMisc. piping & InstrumentationDescriptionU/MUnit QtySales Tax (0%):7. Energy SavingsTotal Installed Cost:Design Cost (6%):TradeLabor Rates ($/Hr)3. Proposed pump system will be a 0 hp primary pump with 0 ft of head and a 10 hp secondary pump with 65 ft of head. The secondary pump will operate with a VFD to modulate flow based on heating water demand.Material CostBond (0%):Pump Motor WiringSupervision, Inspection & Overhead (6.5%):Total M&L CostTotal Labor CostTotal Material CostUnit Labor-Hrs7. Electrical demand costs = $8.89/kW.2. Existing pumping system is rated at 10 hp with flow of 280 gpm, 65 ft. of head, and 89.5% efficiency.6. Electrical consumption costs = $0.0356/kWh.Subcontractor Contingency (0%):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:1. 30-year weather bin data for Anchorage AK (nearest available NOAA station) applies.Subtotal:a. Assumptions:F211 Fan RmPage 8Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 29Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 093. Motor Load Factor = (Chilled Water Load (%) / 100%)^351.4 16.2 35.2 36,501 13,239 23,262 - - -$ - - - 270$ 85$ 185$ 4,390$ 1,592$ 2,798$ -$ -$ -$ -$ 2,983$ 5. kWh Saved = Existing kWh Usage - Proposed kWh Usage6. Annual Cost Savings = kWh Saved x kWh Unit CostWater Consumption Cost =Water Consumption Cost =Natural Gas Consumption Cost =Electrical Consumption Savings (kWh) = Propane Consumption (Gal) =Water Savings (kGal) =Water Consumption (kGal) =Demand Cost Savings =Water Consumption (kGal) =Demand Cost =Demand Cost =Electrical Consumption (kWh) =Total Cost Savings =Electrical Consumption Cost =Natural Gas Cost Savings =Natural Gas Consumption Cost =Water Cost Savings =Electrical Consumption Cost Savings =Propane Savings (Gal) =c. Calculations:1. Pump horsepower (hp) = (Pump flow (gpm) x Total Dynamic Head (ft.)) / (3960 x Pump Eff.)b. Equations:2. Baseline Usage (kWh) = Baseline Pump HP x 0.746 x Operating HoursSavings:4. Proposed Usage= (Primary Pump HP x 0.746 x Hours) + (Secondary Pump HP x 0.746 X Hours x Motor Load Factor)7. Monthly Demand Savings = Baseline Demand - Demand at Peak OAT for MonthDemand (kW) =Demand (kW) =Electrical Consumption (kWh) =Baseline Condition:Electrical Consumption Cost =Propane Consumption (Gal) =Demand Savings (kW) =Proposed Condition:F211 Fan RmPage 9Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 30Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 09ECO Description:Install Primary/Secondary PumpingH201 Boiler Rm1. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$ mmBtu $65 340$ 42,715 5,137$ - -$ - - 146 5,477$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 5,477$ 7,895$ 8,159$ 2,007$ 18,061$ 3. Eliminated Operation and Maintenance CostEA0.5 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance CostEA0.3 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ M&V CostDaily O&MO&M TasksUnit QtyConstruction CostsU/MO&M CostTotal Energy SavingsAnnual PMMaterial Cost for PMTotal Installed CostTradeElectric SavingsNatural Gas SavingsAnnual PMUnit QtyWater SavingsU/MInstallation CostsTotal Cost SavingsTotal Labor CostO&M TasksTradeAnnual CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostAnnual CostTotal CostNet Material CostNet Labor-HrsDaily O&MUnit Labor-HrsMaterial Cost for PMApplicable Building:Unit Labor-Hrs Net Labor-HrsTotal CostMaterial CostLabor Rates ($/Hr)H201 Boiler RmPage 10Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 31Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 095. Cost EstimateVFD 20 HP2 EA 18.0 Electrician 74$ 2,668$ 2,300$ 4,600$ 7,268$ 1 LS30.0 Mechanical84$ 2,534$ 1,800$ 1,800$ 4,334$ 1 LS10.0 Electrician74$ 742$ 50$ 50$ 792$ 2 2.0 Electrician74$ 297$ -$ -$ 297$ Total Cost6,241$ 6,450$ 12,691$ 6. Project Markups-$ -$ -$ 16,054$ 12,691$ 1,044$ 3,363$ 963$ 16,054$ 18,061$ 4. The heating water system operates 1667.5 hours per year.5. The heating water demand is 100% of capacity at the design OAT and 0% at 62°F, and the load profile is linear between these points.Controls SetupMisc. piping & InstrumentationDescriptionU/MUnit QtySales Tax (0%):7. Energy SavingsTotal Installed Cost:Design Cost (6%):TradeLabor Rates ($/Hr)3. Proposed pump system will be a 0 hp primary pump with 0 ft of head and a 20 hp secondary pump with 77 ft of head. The secondary pump will operate with a VFD to modulate flow based on heating water demand.Material CostBond (0%):Pump Motor WiringSupervision, Inspection & Overhead (6.5%):Total M&L CostTotal Labor CostTotal Material CostUnit Labor-Hrs7. Electrical demand costs = $8.89/kW.2. Existing pumping system is rated at 20 hp with flow of 450 gpm, 77 ft. of head, and 91% efficiency.6. Electrical consumption costs = $0.0356/kWh.Subcontractor Contingency (0%):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:1. 30-year weather bin data for Anchorage AK (nearest available NOAA station) applies.Subtotal:a. Assumptions:H201 Boiler RmPage 11Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 32Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 093. Motor Load Factor = (Chilled Water Load (%) / 100%)^394.6 29.9 64.7 67,220 24,505 42,715 - - -$ - - - 497$ 157$ 340$ 8,085$ 2,947$ 5,137$ -$ -$ -$ -$ 5,477$ 5. kWh Saved = Existing kWh Usage - Proposed kWh Usage6. Annual Cost Savings = kWh Saved x kWh Unit CostWater Consumption Cost =Water Consumption Cost =Natural Gas Consumption Cost =Electrical Consumption Savings (kWh) = Propane Consumption (Gal) =Water Savings (kGal) =Water Consumption (kGal) =Demand Cost Savings =Water Consumption (kGal) =Demand Cost =Demand Cost =Electrical Consumption (kWh) =Total Cost Savings =Electrical Consumption Cost =Natural Gas Cost Savings =Natural Gas Consumption Cost =Water Cost Savings =Electrical Consumption Cost Savings =Propane Savings (Gal) =c. Calculations:1. Pump horsepower (hp) = (Pump flow (gpm) x Total Dynamic Head (ft.)) / (3960 x Pump Eff.)b. Equations:2. Baseline Usage (kWh) = Baseline Pump HP x 0.746 x Operating HoursSavings:4. Proposed Usage= (Primary Pump HP x 0.746 x Hours) + (Secondary Pump HP x 0.746 X Hours x Motor Load Factor)7. Monthly Demand Savings = Baseline Demand - Demand at Peak OAT for MonthDemand (kW) =Demand (kW) =Electrical Consumption (kWh) =Baseline Condition:Electrical Consumption Cost =Propane Consumption (Gal) =Demand Savings (kW) =Proposed Condition:H201 Boiler RmPage 12Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 33Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 09ECO Description:Install Primary/Secondary PumpingH201 Boiler Rm 21. Energy & Cost Savings SummarykW kW $ kWh kWh $ mmBtu $kGal$ mmBtu $51 269$ 33,862 4,073$ - -$ - - 116 4,341$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 4,341$ 6,761$ 5,819$ 1,573$ 14,153$ 3. Eliminated Operation and Maintenance CostEA0.5 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance CostEA0.3 - Electrician30$ -$ -$ -$ -$ - LS0.5 - Electrician30$ -$ -$ -$ -$ - LS1.0 - Electrician-$ -$ 7$ -$ -$ - - - -$ -$ -$ -$ -$ -$ M&V CostDaily O&MO&M TasksUnit QtyConstruction CostsU/MO&M CostTotal Energy SavingsAnnual PMMaterial Cost for PMTotal Installed CostTradeElectric SavingsNatural Gas SavingsAnnual PMUnit QtyWater SavingsU/MInstallation CostsTotal Cost SavingsTotal Labor CostO&M TasksTradeAnnual CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostAnnual CostTotal CostNet Material CostNet Labor-HrsDaily O&MUnit Labor-HrsMaterial Cost for PMApplicable Building:Unit Labor-Hrs Net Labor-HrsTotal CostMaterial CostLabor Rates ($/Hr)H201 Boiler Rm 2Page 13Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 34Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 095. Cost EstimateVFD 7.5 HP2 EA 11.9 Electrician 74$ 1,772$ 1,375$ 2,750$ 4,522$ 1 LS30.0 Mechanical84$ 2,534$ 1,800$ 1,800$ 4,334$ 1 LS10.0 Electrician74$ 742$ 50$ 50$ 792$ 2 2.0 Electrician74$ 297$ -$ -$ 297$ Total Cost5,345$ 4,600$ 9,945$ 6. Project Markups-$ -$ -$ 12,580$ 9,945$ 818$ 2,635$ 755$ 12,580$ 14,153$ 4. The heating water system operates 1667.5 hours per year.5. The heating water demand is 100% of capacity at the design OAT and 0% at 62°F, and the load profile is linear between these points.Controls SetupMisc. piping & InstrumentationDescriptionU/MUnit QtySales Tax (0%):7. Energy SavingsTotal Installed Cost:Design Cost (6%):TradeLabor Rates ($/Hr)3. Proposed pump system will be a 0 hp primary pump with 0 ft of head and a 7.5 hp secondary pump with 43 ft of head. The secondary pump will operate with a VFD to modulate flow based on heating water demand.Material CostBond (0%):Pump Motor WiringSupervision, Inspection & Overhead (6.5%):Total M&L CostTotal Labor CostTotal Material CostUnit Labor-Hrs7. Electrical demand costs = $8.89/kW.2. Existing pumping system is rated at 7.5 hp with flow of 600 gpm, 43 ft. of head, and 88.5% efficiency.6. Electrical consumption costs = $0.0356/kWh.Subcontractor Contingency (0%):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:1. 30-year weather bin data for Anchorage AK (nearest available NOAA station) applies.Subtotal:a. Assumptions:H201 Boiler Rm 2Page 14Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 35Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 093. Motor Load Factor = (Chilled Water Load (%) / 100%)^374.5 23.3 51.2 52,919 19,057 33,862 - - -$ - - - 391$ 122$ 269$ 6,365$ 2,292$ 4,073$ -$ -$ -$ -$ 4,341$ 5. kWh Saved = Existing kWh Usage - Proposed kWh Usage6. Annual Cost Savings = kWh Saved x kWh Unit CostWater Consumption Cost =Water Consumption Cost =Natural Gas Consumption Cost =Electrical Consumption Savings (kWh) = Propane Consumption (Gal) =Water Savings (kGal) =Water Consumption (kGal) =Demand Cost Savings =Water Consumption (kGal) =Demand Cost =Demand Cost =Electrical Consumption (kWh) =Total Cost Savings =Electrical Consumption Cost =Natural Gas Cost Savings =Natural Gas Consumption Cost =Water Cost Savings =Electrical Consumption Cost Savings =Propane Savings (Gal) =c. Calculations:1. Pump horsepower (hp) = (Pump flow (gpm) x Total Dynamic Head (ft.)) / (3960 x Pump Eff.)b. Equations:2. Baseline Usage (kWh) = Baseline Pump HP x 0.746 x Operating HoursSavings:4. Proposed Usage= (Primary Pump HP x 0.746 x Hours) + (Secondary Pump HP x 0.746 X Hours x Motor Load Factor)7. Monthly Demand Savings = Baseline Demand - Demand at Peak OAT for MonthDemand (kW) =Demand (kW) =Electrical Consumption (kWh) =Baseline Condition:Electrical Consumption Cost =Propane Consumption (Gal) =Demand Savings (kW) =Proposed Condition:H201 Boiler Rm 2Page 15Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 36Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 10.Chugiak HSECO Description:Boiler Upgrade (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $ kGal$ mmBtu $- -$ - -$ 23,948 16,351$ - - 2,395 16,351$ 2. Installation Cost SummaryO&M CostExisting New Labor Material8,677$ -$ -$ 25,029$ 54,697$ 338,904$ 49,200$ 442,800$ 8,677$ 3. Eliminated Operation and Maintenance Cost120 EA0.5 60.0 --$ -$ -$ -$ -$ 1 LS40.0 40.0 --$ -$ -$ -$ -$ 1 LS1.0 1.0 --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost120 EA0.5 54.0 --$ -$ -$ -$ -$ 1 LS36.0 36.0 --$ -$ -$ -$ -$ 1 LS1.0 1.0 --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ Avoided CostTotal Installed CostUnit Labor-HrsNet Labor-HrsMaterial CostTradeTradeNet Material CostTotal Cost SavingsMaterial Cost for PMAnnual PMM&V CostUnit Qty U/MNet Material CostMaterial CostTotal Labor CostLabor Rates ($/Hr)Labor Rates ($/Hr)Total Labor CostO&M TasksDaily O&MElectric SavingsDaily O&MO&M TasksAnnual PMMaterial Cost for PMInstallation CostsUnit QtyTotal Energy SavingsWater SavingsNatural Gas SavingsNet Labor-HrsUnit Labor-HrsConstruction CostsAnnual CostU/MAnnual CostChugiak HSPage 1Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 37Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 10.Chugiak HS5. Cost Estimate2 EA - Mechanical84$ -$ 50,276$ 100,552$ 100,552$ 2 EA- Mechanical84$ -$ 31,499$ 62,998$ 62,998$ 2 EA- Mechanical84$ -$ 52,179$ 104,358$ 104,358$ 1 LS512.0 Mechanical84$ 43,238$ -$ -$ 43,238$ Total Cost43,238$ 267,908$ 311,146$ 6. Avoided Cost Savings1 LS - Mechanical84$ -$ 8,677$ 8,677$ 8,677$ -$ 8,677$ 8,677$ 7. Measurement and Verification CostAnnual Labor Requirement (Hrs):- Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 8. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:393,600$ Subtotal:311,146$ Supervision, Inspection & Overhead (6.5%): 25,584$ Subcontractor Overhead & Profit (26.5%): 82,454$ Design Cost (6%):23,616$ Subtotal:393,600$ Total Installed Cost:442,800$ Total Material CostTotal M&L CostAnnualized Avoided Replacement CostMaterial CostWeild McLain 1688Weild McLain 1888DescriptionTotal Labor CostDescriptionUnit Qty U/MUnit Labor-HrsTradeTotalTotal M&L CostTest OperationReportWeild McLain 1288Total CostTradeLabor Rates ($/Hr)Record OperationInspect EquipmentLabor Requirement (Hours)DutiesDemolitionTotal Material CostLabor Rates ($/Hr)Total Labor CostMaterial CostUnit Qty U/MUnit Labor-HrsChugiak HSPage 2Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 38Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 10.Chugiak HS9. Energy Savingsa. Assumptions:2. Annualized Avoided Replacement Cost is based on a 25 year lifecycle and a 20 year length of study at a discount rate of 3.0%. Units less than 5 years old are excluded.3. Annualized Avoided Replacement Cost is included in O&M savings3 12 19972 12 19973 12 199711. Fuel Oil accounts for less than 7% of basewide heating fuel consumption. For uniformity of calculation among buildings, this ECO assumes all fuel use is gas.c. Calculations:Baseline Condition:Proposed Condition:Demand (kW) =- Demand (kW) =- Demand Savings (kW) =- Electrical Consumption (kWh) =- Electrical Consumption (kWh) =- Electrical Consumption Savings (kWh) =- Natural Gas Consumption (CCF) =262,835 Natural Gas Consumption (CCF) =238,887 Natural Gas Savings (CCF) =23,948 Water Consumption (kGal) =- Water Consumption (kGal) =- Water Savings (kGal) =- Demand Cost =-$ Demand Cost =-$ Demand Cost Savings =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost Savings =-$ Natural Gas Consumption Cost =179,461$ Natural Gas Consumption Cost =163,110$ Natural Gas Cost Savings =16,351$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =16,351$ 5. Annual Cost Savings = mmBtu Saved x mmBtu Unit Cost7. It was assumed that the annual building heating kbtu/sqft is in line with EIA regional averages. The heating load at design temperature is adjusted to 24.6% of the max output of the boiler system based on these averages and the heating load decreases linearly with increased outdoor air temperature.8. Unoccupied temperature setpoint = 60°F9. Heating setpoint = 68°F10. Natural Gas costs = $0.68279/CCF9. No cooling occurs above 62°F OAT.b. Equations:1. Building Heat Load = Building Load Factor x Max Boiler Output2. Existing mmBtu Usage = Heat Load x Bin Hrs / Existing Efficiency3. Existing boiler measured efficiency = 79.1%4. Proposed boiler efficiency = 88.0%5. Existing standby losses = 1.0%6. Proposed standby losses = 1.0%Remaining LifeUnit ReplacedWeild McLain 1688Weild McLain 1288Weild McLain 188822,900.00 Burnham High Eff C Series23,098.38 Burnham High Eff C Series1. 30-year weather bin data for Anchorage AK applies.3. Proposed mmBtu Usage = Heat Load x Bin Hrs / Proposed Efficiency4. mmBtu Saved = Existing mmBtu Usage - Proposed mmBtu UsageQuantityYear Installed1-for-1 Replacement Cost New Unit22,988.36Burnham High Eff C SeriesChugiak HSPage 3Audit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 39Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisECO 11 - WeatherstrippingECO NO:ECO 11.Chugiak HSECO Description:Weatherstripping (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $ kGal$ mmBtu $- -$ - -$ 1,449 989$ - - 1,449 989$ 2. Installation Cost SummaryO&M CostExisting New Labor Material-$ -$ -$ 989$ 6,894$ 12,472$ 1,162$ 20,528$ 3. Eliminated Operation and Maintenance Cost- EA- - Electrician74$ -$ -$ -$ -$ - EA- - Electrician74$ -$ -$ -$ -$ - LS- - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost- EA- - Electrician74$ -$ -$ -$ -$ EA- - Electrician74$ -$ -$ -$ -$ - LS- - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ Unit Labor-HrsNet Labor-HrsMaterial CostDaily O&MAnnual PMMaterial Cost for PMTotal Installed CostAnnual CostUnit Qty U/MInstallation CostsUnit QtyTotal Cost SavingsNet Material CostM&V CostDaily O&MO&M TasksO&M TasksUnit Labor-HrsU/MAnnual PMElectric SavingsNet Material CostMaterial CostTotal Labor CostLabor Rates ($/Hr)Material Cost for PMLabor Rates ($/Hr)TradeConstruction CostsAnnual CostTotal Labor CostTradeTotal Energy SavingsWater SavingsCCFNet Labor-HrsWeatherstrippingChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 40Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisECO 11 - WeatherstrippingECO NO:ECO 11.Chugiak HS5. Cost Estimate35 EA 1.00 Carpenter 68$ 2,372$ 113$ 3,944$ 6,316$ 27 EA1.50 Carpenter68$ 2,745$ 197$ 5,314$ 8,058$ - EA2.50 Carpenter68$ -$ --$ -$ - - --$ -$ -$ -$ -$ Total Cost5,117$ 9,257$ 14,374$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (6.5%):1,182$ Subcontractor Contingency (26.5%):3,809$ Subtotal:19,366$ Subtotal:18,184$ Supervision, Inspection & Overhead (6%):1,162$ Subcontractor Overhead & Profit (0%):-$ Design Cost (0%):-$ Subtotal:18,184$ Total Installed Cost:20,528$ Total Material CostInspect EquipmentUnit Material CostTradeTotalRecord OperationTotal M&L CostTest OperationReportDoor Gasket Material Single DoorDoor Gasket Material Double DoorDescriptionU/MUnit Labor-HrsLabor Rates ($/Hr)Total Labor CostDutiesUnit QtyLabor Requirement (Hours)Door Gasket Material Overhead DoorWeatherstrippingChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 41Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisECO 11 - WeatherstrippingECO NO:ECO 11.Chugiak HS8. Energy Savings3. Existing total door perimeter is 1780. ft.a. Heating setpoint = 68b. Cooling setpoint = 72c. Total boiler efficiency = 85. %d. Total chiller COP = 3e. Door Leakage Factor (in2/ft2)Non-WeatherstrippedWeatherstrippedSingle Door = 0.157Single Door = 0.114Double Door = 0.16Double Door = 0.114Electric Demand Savings (kW) =- Electric Consumption Savings (kWh) =- Natural Gas Savings (CCF) =1,449 Water Savings (kGal) =- Electric Demand Cost Savings =-$ Electric Consumption Cost Savings =-$ Natural Gas Cost Savings =989$ Water Cost Savings =-$ 989$ a. Assumptions:1. Weatherstripping will be applied to door perimeter to stop air infiltration.2. Window air infiltration is considered in a separate ECO.4. Calculations performed with RETScreen v41. Door Leakage Area (in2) = Door Area x Door Leakage Factor2. Specific Infiltration (CFM/in2) = [ (Stack Coefficient x ΔT) + (Wind Coefficient x [Wind Speed]2 )]1/23. ΔT = Heating Setpoint Temp - Bin Temp4. Air Infiltration (CFM) = Specific Infiltration x Door Leakage Area5. Electric Demand costs $5.25/kW6. Electric Consumption costs $0.120272/kWh7. Natural Gas costs $0.68279/CCFb. Equations:c. Calculations:Total Cost Savings =5. Heat Loss Rate (Btu/hr) = 1.08 x Air Infiltration x ΔT6. Heating Load (mmBtu) = Heat Loss Rate x Bin Hours / 1,000,0007. Energy Savings = Baseline - ProposedWeatherstrippingChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 42Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASDECO NO:ECO 12.ChugiakChugiak1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $ kGal$ mmBtu $- -$ - -$ 15,616 10,663$ - - 1,562 10,663$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 10,663$ 7,264$ 14,474$ 2,717$ 24,456$ 3. Eliminated Operation and Maintenance Cost- EA- - Mechanical84$ -$ -$ -$ -$ - EA- - Mechanical84$ -$ -$ -$ -$ - EA- - Mechanical84$ -$ -$ -$ -$ - EA- - Mechanical84$ -$ -$ -$ -$ -$ 4. New Operation and Maintenance Cost- EA0.2 - Mechanical84$ -$ -$ -$ -$ - EA0.2 - Mechanical84$ -$ -$ -$ -$ - EA0.8 - Mechanical84$ -$ -$ -$ -$ - EA0.8 - Mechanical84$ -$ -$ -$ -$ - EA0.4 - Mechanical84$ -$ -$ -$ -$ -$ Electric SavingsNatural Gas SavingsECO Description:Applicable Building:Total Energy SavingsTotal Installed CostQuarterly PM (Wheel)Unit Qty U/MU/MO&M TasksEquipment ReplacementQuarterly PMWater SavingsAnnual PM (Wheel)Semi-Annual PMAnnual PMUnit QtyTotal Cost SavingsConstruction CostsUnit Labor-HrsNet Labor-HrsSemi-Annual PM (Wheel)Annual PM (Heat Pipe)Total CostMonthly PM (Wheel)O&M TasksNet Material CostTotal Labor CostMaterial CostNet Material CostMaterial CostTotal CostAnnual CostAnnual CostLabor Rates ($/Hr)TradeTradeTotal Labor CostO&M CostInstallation CostsM&V CostUnit Labor-HrsLabor Rates ($/Hr)Energy Recovery Unit (Bldg Chugiak)Net Labor-HrsEnergy Recovery UnitChugiakAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 43Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASDECO NO:ECO 12.Chugiak5. Cost Estimate1 EA20.0 Mechanical84$ 1,689$ 1,731$ 1,731$ 3,420$ 1 EA20.0 Mechanical84$ 1,689$ 2,215$ 2,215$ 3,904$ 1 EA5.3 Mechanical84$ 450$ 1,775$ 1,775$ 2,225$ - EA- Mechanical84$ -$ -$ -$ -$ 3 LS7.6 Mechanical84$ 1,914$ 1,907$ 5,721$ 7,635$ Total Cost5,743$ 11,442$ 17,185$ 6. Measurement and Verification Cost- Daily Weekly Monthly Quarterly Semi-Annual Annual Total-$ - - - - - - - -$ - - - - - - - -$ - - - - - - - -$ - - - - - - - - - - - - - - 6. Project Markups-$ -$ -$ 21,738$ 17,185$ 1,413$ 4,554$ 1,304$ 21,738$ 24,456$ 11. Integration costs for energy wheels (i.e. additional ductwork, AHU expansion, etc.) is 100% of the energy wheel material cost plus 50% of the labor cost.ReportTotalBond (0%):Subtotal:Description1.5 HP PumpCoil C-57. Energy SavingsTotal Installed Cost:DutiesSupervision, Inspection & Overhead (6.5%):Design Cost (6%):Sales Tax (0%):Coil C-6Subcontractor Contingency (0%):-Labor Requirement (Hours)Integration with Existing Air HandlerRecord OperationTest OperationUnit Labor-HrsUnit Qty U/MTrade1. 30-year weather bin data for Anchorage AK applies.3. Existing and proposed day setpoints: 70°F, 40% RH (Heating); 72°F, 50% RH (Cooling)7. Energy recovery efficiency = 0%4. Total Min OA CFM = 8760 for 3 AHUs5. Existing cooling efficiency = 0 kW/ton6. Existing heating efficiency = 88%8. Electrical demand costs = $5.25/kW.9. Electrical consumption costs = $0.120272/kWh.10. Natural gas costs = $0.68279/CCF.2. The ERU recovers heat from the exhaust air during the winter and pre-cools & dehumidifies during the summer.Annual Material/Equipment Cost ($):Total Annual M&V Cost ($):Annual Labor Cost ($):Subtotal:Subcontractor Overhead & Profit (26.5%):Subtotal:a. Assumptions:Inspect EquipmentLabor Rate ($Hr):Annual Labor Requirement (Hrs):Total Material CostMaterial CostTotal M&L CostTotal Labor CostLabor Rates ($/Hr)Energy Recovery UnitChugiakAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 44Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASDECO NO:ECO 12.Chugiak264 264 - 192,587 192,587 - 27,264 11,648 15,616 - - - 1,385$ 1,385$ -$ 23,163$ 23,163$ -$ 18,616$ 7,953$ 10,663$ -$ -$ -$ 10,663$ b. Electric Resistance (kWh) = Σ[(MBH / 3.412 MBH/kW) x (Heating Element Efficiency) x (Bin Heating Hours)]Bin2. Existing Heat Load (MBH) = 60 min/hr x 0.018 Btu/lbm-ºF x (OA CFM) x ( Heating SP Temp - Bin Mean Temp) / 1,000a. Fuel Heating (mmBtu) = Σ[(MBH x Bin Heating Hours) / (1,000 x Boiler Efficiency)]BinWater Consumption Cost =Water Consumption Cost =Water Cost Savings =Electrical Consumption Cost =Electrical Consumption Cost Savings =Natural Gas Consumption Cost =Natural Gas Cost Savings =Demand Cost =Demand Cost Savings =Electrical Consumption (kWh) =Electrical Consumption Savings (kWh) Natural Gas Consumption (CCF) =Natural Gas Savings (CCF) =Water Consumption (kGal) =Water Savings (kGal) =Demand Savings (kW) =Demand (kW) =Natural Gas Consumption Cost =Water Consumption (kGal) =Demand Cost =Electrical Consumption Cost =Natural Gas Consumption (CCF) =b. Heat Pump (kWh) = Σ[(MBH / 15 MBH/ton) x (Heat Pump Efficiency, kW/ton) x (Bin Heating Hours)]Bin3. Proposed Heating (MBH) = 60 min/hr x 0.018 Btu/lbm-ºF x (OA CFM) x ( Heating SP Temp - Bin Mean Temp) x (1 - ERU Efficiency) / 1,000Demand (kW) =Electrical Consumption (kWh) =7. Existing/Proposed Annual Cooling Demand (kW) = Σ[(Total Cooling Load) x (Cooling Efficiency) / 12,000]Bin8. Existing/Proposed Annual Cooling Consumption (kWh) = Σ[(Cooling Demand) x (Bin Hours)]Binc. Calculations:10. Annual Cost Savings = Annual Savings x Energy Unit Cost6. Proposed Cooling Load (Btu/Hr) = 60 min/hr x 0.075 lba/ft3 x (OA CFM) x (Bin Mean Enthalpy - Cooling Setpoint Enthalpy) x (1 - ERU Efficiency)Total Cost Savings =Saving Calculation:5. Existing Cooling Load (Btu/Hr) = 60 min/hr x 0.075 lba/ft3 x (OA CFM) x (Bin Mean Enthalpy - Cooling Setpoint Enthalpy)b. Equations:Baseline Condition:Proposed Condition:9. Annual Savings = Existing Condition - Proposed Condition4. Annual Heating Consumption:1. Existing and proposed heating and cooling hours are based on bin hours and estimated building occupancy periods.Energy Recovery UnitChugiakAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 45Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 13.Chugiak High SchoolECO Description:Domestic Hot Water Heater Upgrade (Bldg Chugiak High School)Applicable Building:Chugiak High School1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $kGal$ mmBtu $- -$ - -$ 1,352 923$ - - 135 923$ 2. Installation Cost SummaryO&M CostExisting NewLabor Material-$ -$ -$ 923$ 3,390$ 6,221$ 1,201$ 10,813$ 3. Eliminated Operation and Maintenance Cost- EA - - Plumber 74$ -$ -$ -$ -$ - EA1.0 - Plumber74$ -$ -$ -$ -$ - LS- - Plumber74$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost- EA - - Plumber 74$ -$ -$ -$ -$ - EA1.0 - Plumber74$ -$ -$ -$ -$ - LS- - Plumber74$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ Total Cost-$ Total Labor CostMaterial Cost for PMAnnual CostAnnual CostDaily O&MAnnual PMUnit Qty U/MNet Labor-HrsO&M TasksUnit Labor-HrsMaterial Cost Net Material CostLabor Rates ($/Hr)Total Labor CostMaterial Cost Net Material CostDaily O&MTradeLabor Rates ($/Hr)Annual PMMaterial Cost for PMConstruction CostsTotal Installed CostO&M TasksUnit Qty U/MUnit Labor-HrsNet Labor-Hrs TradeElectric SavingsNatural Gas SavingsWater SavingsTotal Energy SavingsM&V CostTotal Cost SavingsInstallation CostsDomestic Water HeaterBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 46Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 13.Chugiak High School5. Cost Estimate2 EA11.0 Plumber74$ 1,625$ 3,804$ 7,608$ 9,233$ 2 EA6.0 Plumber74$ 886$ 180$ 360$ 1,246$ 2 LS1.1 Plumber74$ 169$ -$ -$ 169$ - - - Other-$ -$ -$ -$ -$ - - - Other-$ -$ -$ -$ -$ 1 LS- Other-$ -$ (3,050)$ (3,050)$ (3,050)$ Total Cost2,680$ 4,918$ 7,598$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):50$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:9,611$ Subtotal:7,598$ Supervision, Inspection & Overhead (6.5%):625$ Subcontractor Overhead & Profit (26.5%): 2,013$ Design Cost (6%):577$ Subtotal:9,611$ Total Installed Cost:10,813$ TotalDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationTest OperationReportRHEEM-HE80-160Flue installation, pipe re-route, misc.Demolition WorkAvoided CostsTotal Material CostTotal M&L CostU/MUnit Labor-HrsTradeLabor Rates ($/Hr)Total Labor CostMaterial CostDescriptionUnit QtyDomestic Water HeaterBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 47Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Chugiak, AK 99567ECO NO:ECO 13.Chugiak High School8. Energy Savingsa. Assumptions:2. Water heater sizing based on sum of sink and shower fixture GPM x 60% hot water use with a peak demand of 80% of total GPM5. Surface area of tanks calculated based on capacity and standard sizings.6. Existing water heaters have an R-value of 7.9. Existing annual usage split between existing heaters proportionally with tank size.10. Avoided Replacement Cost is based on a 20 year lifecycle at a discount rate of 3.0%. Units with more than 5 years remaining life are excluded from the calculation.12. Natural Gas consumption costs $0.68279/CCF1001989 1.045.6 3258,760385,812,500318,195,8761001989 1.045.6 3258,760385,812,500318,195,876b. Equations:1. Existing Standby Losses = 1/R x SurfaceArea x (Temp. tank- Temp. ambient)2. Energy Savings per year (kWh/yr.) = Standby Losses x hours /3413Baseline Condition: Proposed Condition: Savings Estiamtes:Demand (kW) = - Demand (kW) = - Demand Savings (kW) = - Electrical Consumption (kWh) = - Electrical Consumption (kWh) = - Electrical Consumption Savings (kWh) =- Natural Gas Consumption (CCF) =7,716 Natural Gas Consumption (CCF) =6,364 Natural Gas Savings (CCF) =1,352 Water Consumption (kGal) =- Water Consumption (kGal) =- Water Savings (kGal) =- Demand Cost =-$ Demand Cost =-$ Demand Cost Savings =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost Savings =-$ Natural Gas Consumption Cost =5,269$ Natural Gas Consumption Cost =4,345$ Natural Gas Cost Savings =923$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =923.36$ Stand-by Savings (Btu.yr)Proposed Annual Usage (Btu.yr)Conventional gas RHEEM-GHE100-200NG3. Cost Savings = Energy Savings x $0.0360Conventional gas RHEEM-GHE100-200NG11. Electrical consumption costs $0.120272/kWh.Existing Water Heater Size (nominal gallons)Existing Water Heater TypeReplacement Water Heater TypeExisting Tank Year InstalledReplacement Value Factor (% of 1 for 1 replacement cost avoided)Surface Area (sq. ft.)Existing Standby Losses (Btu/hr)Hours of Operation (hr)Existing Annual Usage (Btu.yr)1. Installed Water Heaters based on RHEEM-HE80-160 @ 70 deg F temperature rise3. Existing water heater temperature is 120 degrees F.4. The ambient temperature is 70 degrees F.7. Existing water heaters operate 8,760 hours per year.8. One bank of multiple instantaneous heater will replace each traditional tank heater.Domestic Water HeaterBldg Chugiak High SchoolAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 48Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 15.Chugiak HSECO Description:High-Efficiency Urinals (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $kWhkWh $ CCF $ kGal$ mmBtu $- -$ - -$ - -$ 242.06 1,868.70 - 1,869$ 2. Installation Cost SummaryO&M CostExisting New Labor Material16,894$ 16,894$ -$ 1,869$ 16,434$ 14,193$ 3,828$ 34,456$ 3. Eliminated Operation and Maintenance Cost3,300 EA 0.1 330.0 Janitor 36$ 11,953$ 0.02$ 66$ 12,019$ 66 EA1.0 66.0 Plumber74$ 4,875$ -$ -$ 4,875$ - LS- - Plumber74$ -$ -$ -$ -$ Total Cost16,894$ 4. New Operation and Maintenance Cost3,300 EA 0.1 330.0 Janitor 36$ 11,953$ 0.02$ 66$ 12,019$ 66 EA1.0 66.0 Plumber74$ 4,875$ -$ -$ 4,875$ - LS- - Plumber74$ -$ 58$ -$ -$ Total Cost16,894$ Electric SavingsNatural Gas SavingsWater SavingsTotal Energy SavingsM&V CostTotal Cost SavingsInstallation CostsConstruction CostsTotal Installed CostO&M TasksUnit Qty U/MUnit Labor-HrsNet Labor-Hrs TradeLabor Rates ($/Hr)Total Labor CostMaterial CostNet Material CostAnnual CostDaily O&MAnnual PMMaterial Cost for PMO&M TasksUnit Qty U/MUnit Labor-HrsAnnual CostDaily O&MAnnual PMMaterial Cost for PMNet Labor-Hrs TradeLabor Rates ($/Hr)Total Labor CostMaterial CostNet Material CostHigh Efficiency UrinalsBldg Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 49Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 15.Chugiak HS5. Cost Estimate33 EA5.3 Plumber74$ 12,992$ 340$ 11,220$ 24,212$ 33 EA1.1 Plumber74$ 2,786$ -$ -$ 2,786$ Total Cost12,992$ 11,220$ 24,212$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- DailyWeekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):50$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:30,628$ Subtotal:24,212$ Supervision, Inspection & Overhead (6.5%): 1,991$ Subcontractor Overhead & Profit (26.5%):6,416$ Design Cost (6%):1,838$ Subtotal:30,628$ Total Installed Cost:34,456$ Total Material CostTotal M&L CostInstall High Efficiency UrinalDemo Existing UrinalDescriptionUnit Qty U/MUnit Labor-HrsTradeLabor Rates ($/Hr)Test OperationReportTotal Labor CostMaterial CostDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationTotalHigh Efficiency UrinalsBldg Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 50Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 15.Chugiak HS8. Energy Savingsa. Assumptions:7. Domestic water cost = $4.09/kGal.8. Wastewater cost = $3.63/kGal.9. Electric Consumption costs $0.120272/kWh.10. Electric Demand costs $5.25/kW.11. Natural Gas costs $0.68279/gal.b. Equations:c. Calculations:Baseline Condition:Proposed Condition:Savings:Demand (kW) =- Demand (kW) =- Demand Savings (kW) =- Electrical Consumption (kWh) =- Electrical Consumption (kWh) =- Electrical Consumption Savings (kWh) =- Natural Gas Consumption (CCF) =- Natural Gas Consumption (CCF) =- Natural Gas Savings () =- Water Consumption (kGal) =484 Water Consumption (kGal) =242 Water Savings (kGal) =242 Demand Cost =-$ Demand Cost =-$ Demand Cost Savings =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost Savings =-$ Natural Gas Consumption Cost =-$ Natural Gas Consumption Cost =-$ Natural Gas Cost Savings =-$ Water Consumption Cost =3,737$ Water Consumption Cost =1,869$ Water Cost Savings =1,869$ Total Cost Savings =1,869$ 6. Proposed flush avg. GPF = 0.51. Annual Urinal Use = [(Total Male Occupants) x (Total Days)]Weekday or Drill Days2. Existing or Proposed Annual Urinal Usage (kGal) = ( [(Avg Daily Use/Person)Weekday x (Urinal GPF) x (Annual Urinal Use)Weekday] + [(Avg Daily Use/Person)Drillday x (Urinal GPF) x (Annual Urinal Use)Drillday] ) / 10003. Annual Water or Fuel Savings = Existing Annual Usage - Proposed Annual Usage4. Annual Cost Savings ($) = Annual Water Savings x Utility Unit Cost1. 33 existing urinal(s) @ 1 gpf.2. 182 school days annually.3. 665 male occupants on typical days.4. Restroom fixture usage rate = 5X per person per day (National average, AWWA).5. Males use the urinal 4 time(s) per day for liquid waste.High Efficiency UrinalsBldg Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 51Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:W03.Chugiak HSECO Description:Low Flow Faucets (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $kGal$ mmBtu $- -$ - -$ 7,409 5,059$ 1,667.79 12,875.37 741 17,934$ 2. Installation Cost SummaryO&M CostExisting NewLabor Material-$ -$ -$ 17,934$ 2,570$ 3,256$ 728$ 6,554$ 3. Eliminated Operation and Maintenance Cost- EA - - Electrician 74$ -$ -$ -$ -$ - EA- - Electrician74$ -$ -$ -$ -$ - LS- - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost- EA - - Electrician 74$ -$ -$ -$ -$ - EA1.0 - Electrician74$ -$ -$ -$ -$ - LS- - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ Total Cost SavingsInstallation CostsNet Labor-Hrs TradeElectric SavingsNatural Gas SavingsWater SavingsTotal Energy SavingsM&V CostMaterial CostNet Material CostAnnual CostDaily O&MConstruction CostsTotal Installed CostO&M TasksUnit Qty U/MUnit Labor-HrsO&M TasksLabor Rates ($/Hr)Total Labor CostAnnual PMMaterial Cost for PMUnit Labor-HrsNet Labor-HrsNet Material CostAnnual CostTradeLabor Rates ($/Hr)Daily O&MAnnual PMUnit Qty U/MMaterial Cost for PMTotal Labor CostMaterial CostLow Flow FaucetChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 52Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:W03.Chugiak HS5. Cost Estimate66 EA 0.2 Plumber 74$ 813$ 15$ 990$ 1,803$ 99 EA0.2 Plumber74$ 1,219$ 16$ 1,584$ 2,803$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost2,032$ 2,574$ 4,606$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):50$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:5,826$ Subtotal:4,606$ Supervision, Inspection & Overhead (6.5%):379$ Subcontractor Overhead & Profit (26.5%): 1,220$ Design Cost (6%):350$ Subtotal:5,826$ Total Installed Cost:6,554$ U/MUnit Labor-HrsDescriptionUnit QtyTotal Material CostTotal M&L CostUltra Low Flow Faucet AeratorKitchen Faucet Swivel AeratorTradeLabor Rates ($/Hr)Total Labor CostMaterial CostTest OperationReportTotalDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationLow Flow FaucetChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 53Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:W03.Chugiak HS8. Energy Savingsa. Assumptions:1. 66 existing lavatory faucets @ 2 gpm; 99 kitchen faucet @ 2.2 gpm.2. 182 weekdays and 0 drill days annually.3. 1330 occupant on workdays and 0 on drill days.4. Avg daily use/person: lav faucet = 3 mins, kitchen faucet = 1 min5. Estimate of 20% of occupants use the kitchen faucet once daily.6. Proposed lav faucet @ 0.5 gpm; kitchen faucet @ 1 gpm.7. 60% of domestic water is heated hotwater; 80 temp rise; 90% water heater efficiency.8. Domestic water cost = $4.09/kGal.9. Wastewater cost = $3.63/kGal.10. Electric Consumption costs $0.120272/kWh.11. Electric Demand costs $5.25/kW.12. Natural Gas costs $0.68279/gal.b. Equations:1. Annual Lav Faucet Use = [(Total Occupants) x (Total Days)]Weekday or Drill Days2. Annual Kitchen Faucet Use = [(Total Occupants) x (Total Days) x (Kitchen Use Use Factor)]Weekday or Drill Days3. Existing or Proposed Annual Lav Faucet Usage (kGal) = ( [(Avg Daily Use/Person)Weekday x (Annual Lav Faucet Use)Weekday x (Faucet GPM)] + [(Avg Daily Use/Person)Drillday x (Annual Lav Faucet Use)Drillday x (Faucet GPM)] ) / 10004. Existing or Proposed Annual Kitchen Faucet Usage (kGal) = ( [(Avg Daily Use/Person)Weekday x (Annual Kitchen Faucet Use)Weekday x (Faucet GPM)] + [(Avg Daily Use/Person)Drillday x (Annual Kitchen Faucet Use)Drillday x (Faucet GPM)] ) / 10005. Annual Water Usage (kGal) = [(Annual Lav Use) + (Annual Kit Use)]Existing/Proposed6. Annual DHW Capacity (kGal) = (% DHW) x (Annual Water Usage)Existing/Proposed7. Heating Energy (mmBtu) = DHW Gal x (8.33 lb/gal) x (1 Btu/lb-°F) x ΔT / 1,000,0008. Fuel Required (mmBtu) = Heating Energy / Boiler Efficiency9. Annual Water or Fuel Savings = Existing Annual Usage - Proposed Annual Usage10. Annual Cost Savings ($) = Annual Savings x Utility Unit Costc. Calculations:Baseline Condition:Proposed Condition:Demand (kW) =- Demand (kW) =- Demand (kW) =- Electrical Consumption (kWh) =- Electrical Consumption (kWh) =- Electrical Consumption (kWh) =- Natural Gas Consumption (CCF)10,152 Natural Gas Consumption (CCF)2,742 Natural Gas Consumption (CCF)7,409 Water Consumption (kGal) =2,285 Water Consumption (kGal) =617 Water Consumption (kGal) =1,668 Demand Cost =-$ Demand Cost =-$ Demand Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Natural Gas Consumption Cost6,931$ Natural Gas Consumption Cost1,872$ Natural Gas Consumption Cost5,059$ Water Consumption Cost =17,641$ Water Consumption Cost =4,765$ Water Consumption Cost =12,875$ Total Cost Savings =17,934$ Low Flow FaucetChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 54Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 17.Chugiak HSECO Description:Thermal Insulation Upgrade (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $ kGal$ mmBtu $- -$ - -$ 54 37$ - -$ 5 37$ 2. Installation Cost SummaryExisting NewLabor Material-$ -$ -$ 37$ 26$ 520$ 68$ 614$ 3. Eliminated Operation and Maintenance Cost- SF- - Carpenter68$ -$ -$ -$ -$ - CSF- - Carpenter68$ -$ -$ -$ -$ - CSF- - Carpenter68$ -$ 18.00$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost- SF- - Carpenter68$ -$ -$ -$ -$ - SY- - Carpenter68$ -$ -$ -$ -$ - SY- - Carpenter68$ -$ 8.60$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ Electric SavingsNatural Gas Savings Water Savings Total Energy SavingsO&M CostM&V CostTotal Cost SavingsInstallation CostsConstruction CostsTotal Installed CostO&M TasksUnit Qty U/MUnit Labor-HrsNet Labor-Hrs TradeLabor Rates ($/Hr)Total Labor CostMaterial CostNet Material CostAnnual CostDaily O&MTradeLabor Rates ($/Hr)Annual PMMaterial Cost for PMO&M TasksTotal Labor CostMaterial CostNet Material CostAnnual CostDaily O&MAnnual PMUnit Qty U/MUnit Labor-HrsNet Labor-HrsMaterial Cost for PMInstall Additional Insualtion in H120Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 55Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 17.Chugiak HS5. Cost Estimate60 SF 0.01 Carpenter 68$ 20$ 0.19$ 11$ 32$ - SY0.44 Carpenter68$ -$ 3.60$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ 1 LS- --$ -$ 400$ 400$ 400$ Total Cost20$ 411$ 432$ 6. Measurement and Verification CostAnnual Labor Requirement (Hrs):- Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):50$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):-$ - - - - - - - - - - - - - - 7. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:546$ Subtotal:432$ Supervision, Inspection & Overhead (6.5%):35$ Subcontractor Overhead & Profit (26.5%): 114$ Design Cost (6%):33$ Subtotal:546$ Total Installed Cost:614$ Total Labor CostMaterial CostDescriptionUnit QtyTotal Material CostTotal M&L CostInstalled CostU/MUnit Labor-HrsTradeLabor Rates ($/Hr)Start-up costsDutiesLabor Requirement (Hours)Inspect EquipmentRecord OperationTest OperationReportTotalInstall Additional Insualtion in H120Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 56Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 17.Chugiak HS8. Energy Savingsa. Assumptions:1. Existing wall area is 60 sqft.3. Existing wall U value is 0.500 or R-2.4. New wall U value is 0.065 or R-16.b. Equations:1. Calculations were performed with RETScreen 4 energy analysis program.c. Calculations:Electric Demand Savings (kW) =0Electric Consumption Savings (kWh) =0Natural Gas Savings (CCF) =54Water Savings (kGal) =0Electric Demand Cost Savings =-$ Electric Consumption Cost Savings =-$ Natural Gas Cost Savings =37$ Water Cost Savings =-$ Total Cost Savings =37$ 5. Electric Demand costs $5.25/kW6. Electric Consumption costs $0.120272/kWh7. Natural Gas costs $0.68279/CCFInstall Additional Insualtion in H120Chugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 57Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 18.Chugiak HSECO Description:AERCO Boiler Upgrade (Bldg Chugiak HS)Applicable Building:Chugiak HS1. Energy & Cost Savings SummarykW kW $ kWh kWh $ CCF $ kGal$ mmBtu $- -$ - -$ 37,425 25,553$ - - 3,742 25,553$ 2. Installation Cost SummaryO&M CostExisting New Labor Material9,992$ -$ -$ 35,545$ 66,877$ 684,227$ 93,888$ 844,993$ 9,992$ 3. Eliminated Operation and Maintenance Cost120 EA 0.5 60.0 - -$ -$ -$ -$ -$ 1 LS 40.0 40.0 - -$ -$ -$ -$ -$ 1 LS 1.0 1.0 - -$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ 4. New Operation and Maintenance Cost120 EA 0.5 54.0 - -$ -$ -$ -$ -$ 1 LS 36.0 36.0 - -$ -$ -$ -$ -$ 1 LS 1.0 1.0 - -$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ - - - --$ -$ -$ -$ -$ Total Cost-$ Construction CostsAnnual CostAnnual CostLabor Rates ($/Hr)Total Labor CostU/MMaterial CostInstallation CostsUnit QtyTotal Energy SavingsWater SavingsNatural Gas SavingsNet Labor-HrsUnit Labor-HrsUnit QtyElectric SavingsDaily O&MO&M TasksAnnual PMMaterial Cost for PMU/MNet Material CostMaterial CostTotal Labor CostLabor Rates ($/Hr)Net Material CostTotal Cost SavingsMaterial Cost for PMAnnual PMM&V CostO&M TasksTradeTradeUnit Labor-HrsNet Labor-HrsDaily O&MAvoided CostTotal Installed CostAerco Boiler UpgradeChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 58Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 18.Chugiak HS5. Cost Estimate4 EA - Mechanical 84$ -$ 45,448$ 181,790$ 181,790$ 2 EA - Mechanical 84$ -$ 45,448$ 90,895$ 90,895$ 4 EA - Mechanical 84$ -$ 45,448$ 181,790$ 181,790$ 2 EA - Mechanical 84$ -$ 16,887$ 33,774$ 33,774$ 1 EA - Mechanical 84$ -$ 30,462$ 30,462$ 30,462$ 1 EA - Mechanical 84$ -$ 18,587$ 18,587$ 18,587$ 1 LS - Mechanical 84$ 1,796$ 3,592$ 3,592$ 5,388$ 1 LS- Mechanical84$ 1,077$ -$ -$ 1,077$ 1 LS592.0 Mechanical84$ 49,994$ -$ -$ 49,994$ Total Cost52,867$ 540,891$ 593,759$ 6. Avoided Cost Savings1 LS - Mechanical 84$ -$ 9,992$ 9,992$ 9,992$ -$ 9,992$ 9,992$ 7. Measurement and Verification Cost- Annual Labor Requirement (Hrs):-$ Daily Weekly Monthly Quarterly Semi-Annual Annual Total Labor Rate ($Hr):-$ - - - - - - - Annual Labor Cost ($):-$ - - - - - - - Annual Material/Equipment Cost ($):-$ - - - - - - - Total Annual M&V Cost ($):- - - - - - - - - - - - - - 8. Project MarkupsSales Tax (0%):-$ Bond (0%):-$ Subcontractor Contingency (0%):-$ Subtotal:751,105$ Subtotal:593,759$ Supervision, Inspection & Overhead (6.5%): 48,822$ Subcontractor Overhead & Profit (26.5%): 157,346$ Design Cost (6%):45,066$ Subtotal:751,105$ Total Installed Cost:844,993$ Total Material CostTradeUnit Qty U/MUnit Labor-HrsLabor Rates ($/Hr)Total Labor CostMaterial CostRecord OperationAERCO BMK750Inspect EquipmentLabor Requirement (Hours)DemolitionDutiesAERCO BMK3.0 LNAERCO BMK2.0 LNAERCO BMK3.0 LNTotal M&L CostTest OperationReportAERCO BMK3.0 LNTotal CostTradeLabor Rates ($/Hr)AERCO BMK1.0 LNTotalStartupTotal M&L CostAnnualized Avoided Replacement CostMaterial CostTotal Labor CostDescriptionUnit Qty U/MTotal Material CostDescriptionUnit Labor-HrsControllerAerco Boiler UpgradeChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 59Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 18.Chugiak HS9. Energy Savingsa. Assumptions:1. 30-year weather bin data for Anchorage AK applies.2. Annualized Avoided Replacement Cost is based on a 25 year lifecycle and a 20 year length of study at a discount rate of 3.0%. Units less than 5 years old are excluded.3. Annualized Avoided Replacement Cost is included in O&M savings3 12 1997 10 AERCO BMK3.0 LN2 12 1997 1 AERCO BMK2.0 LN3. Existing boiler measured efficiency = 79.0%4. Proposed boiler efficiency = 93.0%5. Existing standby losses = 1.0%6. Proposed standby losses = 1.0%8. Unoccupied temperature setpoint = 60°F9. Heating setpoint = 68°F9. No cooling occurs above 62°F OAT.10. Natural Gas costs = $0.68279/CCF11. Fuel Oil accounts for less than 7% of basewide heating fuel consumption. For uniformity of calculation among buildings, this ECO assumes all fuel use is gas.b. Equations:1. Building Heat Load = Building Load Factor x Max Boiler Output2. Existing mmBtu Usage = Heat Load x Bin Hrs / Existing Efficiency3. Proposed mmBtu Usage = Heat Load x Bin Hrs / Proposed Efficiency4. mmBtu Saved = Existing mmBtu Usage - Proposed mmBtu Usage5. Annual Cost Savings = mmBtu Saved x mmBtu Unit Cost7. It was assumed that the annual building heating kbtu/sqft is in line with EIA regional averages. The heating load at design temperature is adjusted to 23.8% of the max output of the boiler system based on these averages and the heating load decreases linearly with increased outdoor air temperature.QuantityYear Installed 1-for-1 Replacement Cost New Unit22,988.3622,900.00Remaining LifeUnit ReplacedWeil McLain 1688Weil McLain 1288Aerco Boiler UpgradeChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 60Level II Energy Audit Chugiak HS Anchorage, AK
Energy Conservation Opportunity AnalysisASD, Eagle River, AK 99567ECO NO:ECO 18.Chugiak HSc. Calculations:Baseline Condition:Proposed Condition:Demand (kW) =- Demand (kW) =- Demand Savings (kW) =- Electrical Consumption (kWh) =- Electrical Consumption (kWh) =- Electrical Consumption Savings (kWh) =- Natural Gas Consumption (CCF) =265,437 Natural Gas Consumption (CCF) =228,012 Natural Gas Savings (CCF) =37,425 Water Consumption (kGal) =- Water Consumption (kGal) =- Water Savings (kGal) =- Demand Cost =-$ Demand Cost =-$ Demand Cost Savings =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost =-$ Electrical Consumption Cost Savings =-$ Natural Gas Consumption Cost =181,238$ Natural Gas Consumption Cost =155,685$ Natural Gas Cost Savings =25,553$ Water Consumption Cost =-$ Water Consumption Cost =-$ Water Cost Savings =-$ Total Cost Savings =25,553$ Aerco Boiler UpgradeChugiak HSAudit Report Ameresco Federal Solutions Appendix B - ECO Calculations, Page 61Level II Energy Audit Chugiak HS Anchorage, AK
APPENDIX C
Major Equipment
Survey
NameLocationArea ServedMakeModelCapacityInstall YearNotesAHU-3 ??? Trane Climate ChangerAir Comp 020 Boiler Rm3 HPAir Comp 020 Boiler Rm Dayton 3N5563 HPBoiler 8 020 Boiler Rm Weil-McLain3000 MBH outputBoiler 9 020 Boiler Rm Weil-McLain3000 MBH outputCP-1 020 Boiler Rm358 GPMCP-10 020 Boiler Rm3/4 HPCP-11 020 Boiler Rm3/4 HPCP-12 020 Boiler Rm180 GPM, 2 HPCP-13 020 Boiler Rm180 GPM, 1.5 HPCP-2 020 Boiler Rm385 GPM, 7.5 HPCP-3 020 Boiler Rm200 GPM, 3 HPCP-4 020 Boiler Rm200 GPM, 3 HPCP-5 020 Boiler Rm Baldor/Armstong 3N266C/3D-1020120 GPM, 2 HPCP-6 020 Boiler Rm Baldor/Armstong 35A13-872/3D-1020120 GPM,2 HPDHW 020 Boiler Rm Bock 71PG NAT 70 gal, 182 gphOil Pump 020 Boiler Rm Baldor M3108 0.5 HPAUH-3 022 Fan Rm Trane Climate Changer 15 HP Pneumatic ActuatorsPF-20 022 Fan Rm0.5 HPVF-2 023 ElecAHU-1 164 Fan Rm10 HPAHU-17 Auditorium Mechanical Pace A33 SWSI AF11000 CFM, 10 HPBoiler B7 Auditorium Mechanical194 MBHBoiler B8 Auditorium Mechanical194 MBHDHW Auditorium Mechanical AO Smith BTC 240A 780 100 GalHeat Exchange Auditorium MechanicalPump Auditorium Mechanical3 HPPump Auditorium Mechanical3 HPPump Auditorium Mechanical3 HPPump Auditorium Mechanical3 HPPump Auditorium Mechanical1.5 HPPump Auditorium Mechanical1.5 HPRF-1# Auditorium Mechanical10 HPRF-2 Auditorium Mechanical Pace 7.5 HPSF-2 Auditorium Mechanical6200 CFM, 7.5 HPAHU-9 B143 Elec B Area CorePneumatic ActuatorsAHU-8 B144 Fan Room B Area Core Pace Pneumatic ActuatorsAir Comp D110 Boiler Rm Shop Air Hankison 8,010 Boiler-1 D110 Boiler Rm Weil-McLain 1,888 4035 mbh outputMechanical Equipment Summary
NameLocationArea ServedMakeModelCapacityInstall YearNotesMechanical Equipment SummaryBoiler-2 D110 Boiler RmWeil-McLain1,888 4035 mbh outputBoiler-3 D110 Boiler RmWeil-McLain1,888 4035 mbh outputCP-1 D110 Boiler Rm240 GPM, 5 HPCP-1A D110 Boiler Rm240 GPM, 5 HPCP-2A D110 Boiler Rm2 HPCP-2B D110 Boiler Rm2 HPCP-3A D110 Boiler Rm2 HPCP-3B D110 Boiler Rm2 HPHeat Exch D110 Boiler Rm Photolab ChemicalsHeat Exch Pump D110 Boiler Rm Photolab Chemicals1.5 HPHWH 1 (DWH) D110 Boiler RmDHWAercoAN-271038930 MBH outputOil Pump D110 Boiler RmBoilers BaldorM31080.5 HPPump-? D110 Boiler Rm B-2 Jockey Pump1/6 HPPump-1 D110 Boiler Rm B-1 Main Circ Pump270 GPM, 2 HPPump-10 D110 Boiler Rm B-3 Blend Pump135 GPM, 3/4 HPPump-2 D110 Boiler Rm B-2 Main Circ Pump270 GPM, 2 HPPump-3 D110 Boiler Rm B-3 Jockey Pump270 GPM, 2 HPPump-5 D110 Boiler Rm B-1 Jockey Pump1/6 HPPump-7 D110 Boiler Rm B-3 Main Circ Pump1/6 HPPump-8 D110 Boiler Rm B-1 Blend Pump135 GPM, 3/4 HPPump-9 D110 Boiler Rm B-2 Blend Pump135 GPM, 3/4 HPPump-B1-11 D110 Boiler Rm1.5 HPAHU-1D D200 Fan RoomScott Springfield HQ-280-AHU-23000 25 HPElectronic ActuatorsCP-1D D200 Fan RoomD Glycol Coils Armstrong/Baldor3 HPCP-2D D200 Fan RoomD Glycol Coils Armstrong/Baldor3 HPCP-3D D200 Fan RoomD HW Coils Armstrong/Baldor3/4 HPCP-4D D200 Fan RoomD HW Coils Armstrong/Baldor3/4 HPHeat Exch HE-1D D200 Fan RoomTranterUFX-6-5-UP-57Mr. Slim Condenser D200 Fan RoomMitsubishi PUY-A24NHA3Mr. Slim Fan Coil D200 Fan RoomMitsubishi PKA-A24KARF-10 D200 Fan RoomCook300 CPFB10 HP"RF-1C" D203 Fan Room"RF-2C" D203 Fan Room"RF-3C" D203 Fan RoomAHU-1C D203 Fan RoomTraneAIRPAK6020 CFM, 7.5 HP Apr-04 Electronic ActuatorsAHU-2C D203 Fan RoomTraneAIRPAK4100 CFM, 5 HP Apr-04 Electronic ActuatorsAHU-3C D203 Fan RoomTraneAIRPAK8700 CFM, 7.5 HP Apr-04 Electronic ActuatorsAHU-4C D203 Fan RoomTraneAIRPAK5790 CFM, 5 HP Apr-04 Electronic ActuatorsCP-1C D203 Fan Room C AHU Glycol Loop3/4 HP
NameLocationArea ServedMakeModelCapacityInstall YearNotesMechanical Equipment SummaryCP-2C D203 Fan Room C AHU Glycol Loop3/4 HPHeat Exch HE-1C D203 Fan Room C AHU Glycol Loop GrahamGPE-07EF-2D "Science Room Exhaust"D205 Fan RoomCook180 CPFB3/4 HPAHU-10 Fan 19 E109 CAD LabPace1.5 HPElectronic ActuatorsFan 21 (EF) E109 CAD LabRA FAN-4 Fan 20 (RF)E109 CAD LabAHU-3E E116 Material ScienceTraneMCCA012GAY0ABA 7.5 HPAHU-4E E116 Material ScienceTraneMCCA08BAJ0C0DA 3 HPAHU-11 Fan 8 E122-1 1.5 HPAHU-1E E140 MaintenanceTraneAHU-1E E173 Above StaffTemptrol20 HPCP-1 E173 Above StaffCP-2 E173 Above StaffCP-3 E173 Above StaffCP-4 E173 Above StaffHX E173 Above StaffHX-1E E173 Above StaffGrahamRF-1 E173 Above Staff1/2 HPRF-2 E173 Above Staff1/2 HPRF-3 E173 Above Staff1/2 HPDust Collector ExteriorCutler-Hammer/EATONGenerator ExteriorAHU-1F F211 Fan Rm42000 CFM, 40 HPAHU-2F F211 Fan RmTraneAIRPAK27620 CFM, 30 HPCP-1F F211 Fan Rm280 GPM, 10 HPCP-2F F211 Fan Rm270 GPM, 10 HPHE-1F F211 Fan RmTranter2002Refrigeratoin Unit F211 Fan RmKitchen CoolerRDI86327-12287RRefrigeratoin Unit F211 Fan RmKitchen CoolerRDI86326-11845RAHU-2 F310 Fan Rm27620 CFMEF-9F F310 Fan RmRF-# F310 Fan Rm15 HPAHU-3G G122 Fan RmTraneAIRPAK7000 CFM, 7.5 HP Oct-02B1-H H201 Boiler RmWeil-McLain 1688R3461 MBH outputB2-H H201 Boiler RmWeil-McLain 1688R3461 MBH outputB3-H H201 Boiler RmWeil-McLain 1688R3461 MBH outputCP-10H H201 Boiler RmMarathon600 GPM, 20 HP
NameLocationArea ServedMakeModelCapacityInstall YearNotesMechanical Equipment SummaryCP-11H H201 Boiler RmMarathon600 GPM, 20 HPCP-1H H201 Boiler RmMarathon3 HPCP-2H H201 Boiler RmMarathon3 HPCP-3H H201 Boiler RmMarathon3 HPCP-4H H201 Boiler RmMarathon450 GPM, 7.5 HPCP-5H H201 Boiler RmMarathon450 GPM, 7.5 HPDHW-7 H201 Boiler RmLeeson1 HPDHW-8 H201 Boiler RmLeeson1 HPET-1H H201 Boiler Rm Pool Heater Storage TankAmtrol2002ET-2H H201 Boiler Rm Pool Heater Storage TankHWH DHW-# H201 Boiler RmHWH DHW-# H201 Boiler RmJCI Air Comp H201 Boiler Rm1.5 HPJCI Air Comp H201 Boiler Rm1.5 HPOil Pump H201 Boiler RmBaldor3 HPCP-11 H202 Mech RmBaldorE-11 (EF) H202 Mech RmE-12 (EF) H202 Mech RmS-10 ("AHU-26") H202 Mech RmS-8 ("AHU-24") H202 Mech Rm3 HPS-9 ("AHU-25") H202 Mech Rm7.5 HP
APPENDIX D
Thermal Image
Report
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:27:33 PMImage Date
IR_0177.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Good door system- low heat loss
Description
Chugiak HS Main Entrance
1 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:28:23 PMImage Date
IR_0181.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Low heat loss through windows
Description
Newer Window System
2 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:34:05 PMImage Date
IR_0187.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Description
Low heat loss
3 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:39:55 PMImage Date
IR_0195.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Convective heat loss around outer door perimeter
Description
4 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:40:27 PMImage Date
IR_0197.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Description
Minimal heat loss
5 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
9/7/2011 7:18:32 PMImage Date
IR_0115.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Difference in temperature suggests better weather-stripping could prove beneficial
Description
6 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
9/7/2011 7:23:22 PMImage Date
IR_0120.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Convective and conductive heat loss
Description
7 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 6:56:52 PMImage Date
IR_0160.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Low heat loss
Description
8 (9)
Inspection Report
Report Date 11/15/2011
Company Ameresco Customer Anchorage School
District- Chugiak High
Schooll
Address 6643 Brayton Drive Site Address 16525 Birchwood Loop
Rd
Thermographer Ameresco Contact Person
Image and Object Parameters Text Comments
FLIR T300Camera Model
10/12/2011 7:00:54 PMImage Date
IR_0162.jpgImage Name
0.95Emissivity
68.0 °FReflected apparent
temperature
3.3 ftObject Distance
Convective heat loss
Description
9 (9)
APPENDIX E
ASHRAE Level II
Description
5
Levels of Effort
Depending on the physical and energy-use characteristics of a building and the
needs and resources of the owner, these steps can require different levels of effort. A
commercial building energy analysis can generally be classified into the following levels
of effort.
OVERVIEW
Preliminary Energy
Use Analysis
Analyze historic utility use and cost. Develop the Energy Utilization Index (EUI) of
the building. Compare the building EUI to similar buildings to determine if further engi-
neering study and analysis are likely to produce significant energy savings.
Level I—Walk-
Through Analysis
Assess a building’s energy cost and efficiency by analyzing energy bills and con-
ducting a brief on-site survey of the building. A Level I energy analysis will identify and
provide a savings and cost analysis of low-cost/no-cost measures. It will also provide a
listing of potential capital improvements that merit further consideration, and an initial
judgment of potential costs and savings. A walk-through analysis of a facility will utilize
all the forms in this publication except those in the section on “Building and Systems
Report.”
Level II—Energy
Survey and Analysis
This includes a more detailed building survey and energy analysis. A breakdown of
the energy use within the building is provided. A Level II energy analysis will identify
and provide the savings and cost analysis of all practical measures that meet the owner’s
constraints and economic criteria, along with a discussion of any changes to operation
and maintenance procedures. It may also provide a listing of potential capital-intensive
improvements that require more thorough data collection and engineering analysis, and
a judgment of potential costs and savings. This level of analysis will be adequate for
most buildings and measures.
Level III—Detailed
Analysis of
Capital-Intensive
Modifications
This level of engineering analysis focuses on potential capital-intensive projects
identified during the Level II analysis and involves more detailed field data gathering as
well as a more rigorous engineering analysis. It provides detailed project cost and sav-
ings calculations with a high level of confidence sufficient for major capital investment
decisions.
6 · Procedures for Commercial Building Energy Audits
Discussion There are not sharp boundaries between these levels. They are general categories for
identifying the type of information that can be expected and an indication of the level of
confidence in the results. It is possible that while performing an energy analysis in a par-
ticular building, various measures may be subjected to different levels of analysis.
Some readers of an energy analysis report may be unable to comprehend the techni-
cal analysis involved, while others may demand a full presentation of the analysis for
critique. Consequently, technical material should be presented in an appendix to the
report, while the body of the report guides the reader through the technical material and
summarizes the findings.
Information presented here outlines the engineering procedures that should be fol-
lowed while performing an energy analysis. It is assumed that the analyst is a knowl-
edgeable and competent individual. No attempt is made in this publication to prescribe
specific methods of data gathering or data analysis.
To assist with the organization of the data collected and the calculation procedures,
this publication contains guideline forms that suggest the type of data to be gathered and
its organization. It is recommended that the analyst develop and use appropriate data col-
lection and organization forms specific to the size and type of building(s) being ana-
lyzed.
The forms presented in the first two sections are building characteristic forms on
which basic building information and energy use can be recorded. Use of these forms by
all engineering analysts will result in a uniform procedure for reporting the results of an
analysis. It is recommended that these forms be completed without modification.
PRELIMINARY
ENERGY USE
ANALYSIS
Before any level of energy analysis is begun, it is valuable to perform a preliminary
energy use analysis to determine a building’s current energy and cost efficiency relative
to other, similar buildings. This is normally done by calculating the energy use and cost
per square foot per year, which can indicate the potential value of further levels of analy-
sis. This preliminary analysis generally includes the following steps.
1. Determine the building’s gross conditioned square footage and record this on
the building characteristics form. Classify the primary use of the building.
Ensure that the standard definition of gross area is used.
2. Assemble copies of all utility bills and summarize them for at least a one-year
period, preferably three years. Review the monthly bills for opportunities to
obtain a better price through taking advantage of different utility rate classes.
Review the monthly patterns for irregularities. Note if a bill is missing or if it is
estimated rather than actual consumption.
3. Complete the energy performance summary to develop the energy index and
the cost index for each fuel, or demand type, and their combined total using
ASHRAE Standard 105 methods.
4. Compare the Energy Utilization Index (EUI) and the cost index with buildings
having similar characteristics. The owner of the subject building may have sim-
ilar buildings for this comparison. Comparison should also be made with pub-
licly available energy indices of similar buildings. In all cases, care should be
taken to ensure that comparison is made with current data, using consistent def-
initions of building usage and floor area.
5. Derive target energy, demand, and cost indices for a building with the same
characteristics as this building. A range of methods are available for this work:
• Pick from any database of similar buildings those buildings with the
lowest energy index.
• Pick an index based on the knowledge of an energy analyst experi-
enced with this type of building.
6. Compare the energy and cost savings for each fuel type if the building were to
reach the target Energy Utilization Index. Using these value(s), determine if
further engineering analysis is recommended.
Levels of Effort · 7
LEVEL I—
WALK-THROUGH
ANALYSIS
This process includes all of the work done for the preliminary energy use analysis,
plus the following.
1. Perform a brief walk-through survey of the facility to become familiar with its
construction, equipment, operation, and maintenance.
2. Meet with owner/operator and occupants to learn of special problems or needs
of the facility. Determine if any maintenance problems and/or practices may
affect efficiency.
3. Perform a space function analysis, guided by the forms in the “Walk-Through
Data” section. Determine if efficiency may be affected by functions that differ
from the original functional intent of the building.
4. Perform a rough estimate to determine the approximate breakdown of energy
use for significant end-use categories, including weather and non-weather-
related uses.
5. Identify low-cost/no-cost changes to the facility or to operating and mainte-
nance procedures, and determine the savings that will result from these
changes.
6. Identify potential capital improvements for further study, and provide an initial
estimate of potential costs and savings.
The report for a Level I analysis should contain the building characteristics and
energy use summary as well as the following.
1. Quantification of savings potential from changing to a different utility price
structure.
2. Discussion of irregularities found in the monthly energy use patterns, with sug-
gestions about their possible causes.
3. The energy index of similar buildings. Report the source, size, and date of the
sample used in this comparison. The names of comparable buildings should be
given if known.
4. The method used to develop the target indices. Where comparison is made to
other buildings, state their names. Where the experience of someone other than
the author is used to develop the target, provide the source. Where the target is
developed by calculation, show the calculation or quote the name and version
of software used and include both input and output data.
5. Total energy and demand cost by fuel type for the latest year and preceding two
years if available. Show potential savings in dollars using the energy index for-
mat of ASHRAE Standard 105.
6. The fraction of current costs that would be saved if the energy index were
brought to the target level.
7. A summary of any special problems or needs identified during the walk-
through survey, including possible revisions to operating and maintenance pro-
cedures.
8. A preliminary energy use breakdown by major end uses.
9. The listing of low-cost/no-cost changes with the savings for these improve-
ments.
10. The potential capital improvements, with an initial estimate of potential costs
and savings
LEVEL II—ENERGY
SURVEY AND
ENGINEERING
ANALYSIS
This analytical procedure is guided by Level I analysis and includes the following
additional work:
1. Review mechanical and electrical system design, installed condition, mainte-
nance practices, and operating methods. Where drawings have been kept up to
date, this task will be much easier.
8 · Procedures for Commercial Building Energy Audits
2. Review existing operating and maintenance problems. Determine planned build-
ing changes.
3. Measure key operating parameters and compare to design levels, for example,
operating schedules, heating/cooling water temperature, supply air temperature,
space temperature and humidity, ventilation quantities, and light level at the
task. Such measurements may be taken on a spot basis, or logged, manually or
electronically.
4. Prepare a breakdown of the total annual energy use into end-use components,
as illustrated in the 1999 ASHRAE Handbook—Applications, Chapter 34, Fig-
ure 4, or as shown in the section “Energy Analysis Summary and Recommen-
dations.” A number of calculation methods are available, ranging from
simplified manual calculations to fully detailed computer simulation of hour-
by-hour building operations for a full year.
5. List all possible modifications to equipment and operations that would save
energy. Select those that might be considered practical by the owner. List pre-
liminary cost and savings estimates.
6. Review the list of practical modifications with the owner/operator and select
those that will be analyzed further. Prioritize the modifications in the antici-
pated order of implementation.
7. For each practical measure, estimate the potential savings in energy cost and its
energy index. To account for interaction between modifications, assume that
modifications with the highest operational priority and/or best return on invest-
ment will be implemented first. A number of calculation methods are available,
ranging from simplified manual calculations to rerunning computer simula-
tions, if performed in Step 4, above.
8. Estimate the cost of each practical measure.
9. Estimate the impact of each practical measure on building operations, mainte-
nance costs, and non-energy operating costs.
10. Estimate the combined energy savings from implementing all of the practical
measures and compare to the potential derived in the Level I analysis. It should
be clearly stated that savings from each modification are based on the assump-
tion that all previous modifications have already been implemented and that the
total savings account for all of the interactions between modifications.
11. Prepare a financial evaluation of the estimated total potential investment using
the owner’s chosen techniques and criteria. These evaluations may be per-
formed for each practical measure.
12. Following submission of the report of the Level II analysis, meet with the
owner to discuss priorities and to help select measures for implementation or
further analysis.
The report for a Level II analysis should contain at least the following.
1. A summary of energy use and cost associated with each end-use. Show calcula-
tions performed or quote the name and version of software used and include
both input and output pages. Provide interpretation of differences between
actual total energy use and calculated or simulated end-use totals.
2. A description of the building, including typical floor plans and inventories of
major energy-using equipment. (This information may be included as an
appendix.)
3. A list of measures considered but felt to be impractical, with brief reasons for
rejecting each.
4. For each practical measure, provide
• a discussion of the existing situation and why it is using excess energy;
• an outline of the measure, including its impact on occupant health,
comfort, and safety;
Levels of Effort · 9
• a description of any repairs that are required for a measure to be effec-
tive;
• the impact on occupant service capabilities, such as ventilation for late
occupancy or year-round cooling;
• an outline of the impact on operating procedures, maintenance proce-
dures, and costs;
• expected life of new equipment, and the impact on the life of existing
equipment;
• an outline of any new skills required in operating staff and training or
hiring recommendations;
• calculations performed or provide the name and version of software
used and include both input and output data.
5. A table listing the estimated costs for all practical measures, the savings, and
financial performance indicator. For the cost of each measure, show the esti-
mated accuracy of the value quoted. This table should spell out the assumed
sequence of implementation and state that savings may be quite different if a
different implementation sequence is followed.
6. A discussion of any differences between the savings projected in this analysis
and the estimated potential derived in the Level I analysis.
7. Overall project economic evaluation.
8. Recommended measurement and verification method(s) that will be required to
determine the actual effectiveness of the recommended measures.
9. Discussion of feasible capital-intensive measures that may require a Level III
analysis.
LEVEL III—DETAILED
ANALYSIS OF
CAPITAL-INTENSIVE
MODIFICATIONS
This analytical procedure is guided by Levels I and II analyses and the owner’s
selection of measures for greater definition. It must follow such Level I and II work.
1. Expand definition of all modifications requiring further analysis.
2. Review measurement methods, and perform additional testing and monitoring
as required to allow determination of feasibility.
3. Perform accurate modeling of proposed modifications. Ensure that modeling
includes system interaction.
4. Prepare a schematic layout of each of the modifications.
5. Estimate the cost and savings of each modification.
6. Meet with owner to discuss/develop recommendations.
The report for a Level III analysis should include the following, as a minimum.
1. Include text, schematics, and equipment lists necessary to completely describe
all proposed changes to physical equipment. Matters of a final design nature
may be left to subsequent engineering as long as the cost of such engineering is
included in the budget. Firm price contractor quotations for key parts of any
measure may be included. Cost estimates shall show contingencies separately
and report the expected accuracy of the budget.
2. Prepare a financial evaluation of the estimated capital investment and projected
savings. Use the owner’s chosen techniques and criteria.