HomeMy WebLinkAboutCIRI-ANC-CAEC MOA Fire Station 1 and Admin 2012-EE
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ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 2 of 57
Project # CIRI-ANC-CAEC-45
Prepared for:
The Municipality of Anchorage
May 2, 2012
Fire Station #1 and Administration Building
100 & 122 East 4th St
Anchorage, AK 99517
Audit performed by:
Energy Audits of Alaska
P.O. Box 220215
Anchorage, AK 98522
Contact: Jim Fowler, PE, CEA#1705
Jim@jim-fowler.com
206.954.3614
Prime Contractor:
Central Alaska Engineering Company
32215 Lakefront Drive
Soldotna, AK 99699
Contact: Jerry Herring, PE, CEA #1484
AKEngineers@starband.net
907.260.5311
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 3 of 57
TABLE OF CONTENTS
1. Executive Summary 5
2. Audit and Analysis Background 14
3. Acknowledgements 15
4. Building Description & Function 17
5. Historic Energy Consumption 20
6. Interactive Effects of Projects 20
7. Loan Program 20
APPENDICES
Appendix A: Photos 22
Appendix B: AkWarm-C Report 28
Appendix C: Equipment Schedules 33
Appendix D: Additional, Building-Specific EEM detail 40
Appendix E: Specifications supporting EEM’s 44
Appendix F: Benchmark Data 50
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 4 of 57
REPORT DISCLAIMERS
This audit was performed using American Recovery and Reinvestment Act (ARRA)
funds, managed by the Alaska Housing Finance Corporation (AHFC).
This energy audit is intended to identify and recommend potential areas of energy
savings, estimate the value of the savings and approximate the costs to implement the
recommendations. Any modifications or changes made to a building to realize the
savings must be designed and implemented by licensed, experienced professionals in
their fields. Lighting recommendations should all be first analyzed through a thorough
lighting analysis to assure that the recommended lighting upgrades will comply with
State of Alaska Statute as well as Illuminating Engineering Society (IES)
recommendations. Energy Audits of Alaska, LLC and Central Alaska Engineering
Company bear no responsibility for work performed as a result of this report.
Payback periods may vary from those forecasted due to the uncertainty of the final
installed design, configuration, equipment selected, and installation costs of
recommended Energy Efficiency Measures (EEMs), or the operating schedules and
maintenance provided by the owner. Furthermore, EEMs are typically interactive, so
implementation of one EEM may impact the cost savings from another EEM. Neither
the auditor, Central Alaska Engineering Company, AHFC, or any other party involved in
preparation of this report accepts liability for financial loss due to EEMs that fail to meet
the forecasted payback periods.
This audit meets the criteria of an Investment Grade Audit (IGA) per the Association of
Energy Engineers definition, and is valid for one year. The life of the IGA may be
extended on a case-by-case basis, at the discretion of the AHFC.
IGA’s are the property of the State, and may be incorporated into AkWarm-C, the
Alaska Energy Data Inventory (ARIS), or other state and/or public information system.
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.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 5 of 57
1. Executive Summary
Building Owner:
Municipality of Anchorage
3640 East Tudor
Anchorage, AK 99507
Building contact:
Paul Urbano
Sr. Captain
907-267-5001
Alaska Housing Finance Corporation
P.O. Box 10120
Anchorage, AK 99510-1020
Contact: Rebekah Luhrs
Energy Specialist
907-330-8141
rluhrs@ahfc.us
Guidance to the reader:
The Executive Summary is designed to contain all the information the building
owner/operator should need to determine how the subject building’s energy
efficiency compares with other similar use buildings, which energy
improvements should be implemented, approximately how much they will cost
and their estimated annual savings. Sections 2 through 7 of this report and the
Appendices, are back-up and provide much more detailed information should
the owner/operator, or their staff, desire to investigate further.
This audit was performed using American Recovery and Reinvestment act
(ARRA) funds to promote the use of innovation and technology to solve energy
and environmental problems in a way that improves the State’s economy. The
audit and this report are pre-requisites to access AHFC’s Retrofit Energy
Assessment Loans (REAL) program, which is available to the building’s owner.
The purpose of the energy audit is to identify cost-effective system and facility
modifications, adjustments, alterations, additions and retrofits. Systems
investigated during the audit included heating, ventilation, and air conditioning
(HVAC), interior and exterior lighting, motors, building envelope, and energy
management control systems (EMCS).
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 6 of 57
The site visit to this building occurred on February 6th, 2012.
Fire Station #1 houses one fire department precinct and the Administration
building houses the fire department museum and administrative offices. The
two buildings are directly adjacent, but not attached and they share the same
boilers and electric meter. The fire station houses up to 20 personnel in
dormitory style overnight accommodations.
Both buildings were built in 2000 and no major modifications have been made.
Energy Consumption and Benchmark Data
Benchmark utility data for 2009 and 2010 is summarized in Tables 1 and 2
below.
Table 1
2009 2010
Consumption Cost Consumption Cost
Electricity ‐ kWh 347,880 $ 33,916 380,880 $ 39,806
Natural Gas ‐ CCF 60,500 $ 61,785 49,121 $ 40,343
Totals $ 95,701 $ 80,149
A benchmark measure of energy use relative to other similar function buildings
in the area is the Energy Use Index (EUI), which takes the total annual energy
used by the facility divided by the square footage area of the building, for a value
expressed in terms of kBTU/SF. This number can then be compared to other
buildings to see if it is average, higher or lower than similar buildings in the area.
Likewise, the Energy Cost Index (ECI) is the cost of all energy used by the
building expressed in $/SF of building area. Comparative values are shown in
Table 2 below.
Table 2 – 2009 & 2010 Average EUI and ECI
Subject
Building
Fire Station 11
(Eagle River)
Fire Station 12
& Dispatch
Public Order & Safety
Buildings in Continental
US in 2003**
Energy Use Index
(EUI) ‐ kBTU/SF 225 171 267 116
Energy Cost
Index (ECI) ‐ $/SF $2.94 $3.47 $5.33 n/a
** Data retrieved from the US Energy Administration database, these figures are for “Places of
Public Order and Safety”, the most relevant category tracked by the USEA.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 7 of 57
Evaluation of energy consumption & benchmark data
As observed in Table 1 above, there was a 10% increase in electricity
consumption and an 18% decrease in natural gas (NG) consumption between
2009 and 2010. These differences are clearly evident in the energy
consumption graphs in Appendix F; several reasons are listed below, but the
confirmed cause of these changes is not known.
Table 2 shows that the subject building’s energy use per square foot falls
between the two comparison buildings and its ECI is 15% lower than Fire
Station (FS) 11 and 45% lower than FS 12. The reasons for the significant
difference in ECI can be observed in Chart 1 below. 80% of the subject
buildings consumed energy is in the form of NG, which is 1/5th cost per BTU of
electricity.
As is typical for Alaskan buildings, a comparison to similar buildings in the
continental US shows Alaska buildings have a much higher EUI – which is to be
expected given the weather differences.
A deeper analysis of the energy consumption of these three fire stations follows:
Chart 1
Chart 1 above shows the subject building’s gas and electrical EUI compared to
the two other fire stations.
0 50 100 150 200
Subject Building ‐ FS 1 &
Admin Bldg
Fire Station 11 (Eagle River)
Fire Station 12 & Dispatch
Natural Gas EUI
Electrical EUI
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
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Natural gas consumption:
All three of the buildings have overnight accommodations for rotating shift
firemen. Having audited all three buildings, the auditor believes that the subject
building’s excessive NG consumption is a result of:
- RTU-7 bringing in 78,000 cubic feet (11,200 CFM for 7 minutes) of
unheated OSA every time a vehicle enters or exits through an overhead
door
- A larger percentage of overhead doors per square foot of vehicle bay,
resulting in more OSA infiltration with each door opening (300% more
than FS 12 and 150% more than FS 11)
- higher occupancy and more calls per day which means more door
openings
- this building uses NG-fired boiler’s to supply hydronics for snow melt on
the apparatus bay aprons and administration building sidewalks, the
other buildings do not have snow melt capabilities
Electrical consumption:
Based on Chart 1, the subject building’s lower electrical consumption appears to
be the result of a more efficient building and after the site survey, this is believed
to be true. But the significant difference between FS 12 and the subject
building’s electrical consumption is deceiving. Upon deeper investigation, FS
12, which is almost identical in use to the subject building (it has adjacent
offices, residential quarters, etc.), has a separate communications building on its
north side, which has a massive amount (and unknown consumption) of Alaska
Land Mobile Radio (ALMR) communications equipment, requiring 25 Tons of
cooling capacity. This building shares an electrical meter with FS 12, so its
consumption is included in the EUI for FS 12. This is believed to explain the
nearly triple consumption when compared to the subject building.
Recommended Energy Efficiency Measures
Various Energy Efficiency Measures (EEMs) have been analyzed for this
building to determine if they would provide energy savings with reasonably good
payback periods. EEMs are recommended for reasons including:
1.) they have a reasonably good payback period
2.) for code compliance
3.) end of life (EOL) replacement
4.) reasons pertaining to efficient building management
strategy, operations, maintenance and/or safety
All the EEMs considered for this facility are detailed in the attached AkWarm-C
Energy Audit Report in Appendix B and in Appendix D. Each EEM includes
payback times, estimated installation costs and estimated energy savings.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 9 of 57
The summary EEM’s that follow are the only EEM’s that are recommended
for this building. Others have been considered (See Appendix D-3) but are not
considered to be justified or cost effective. The recommended EEM’s were
selected based on consideration from three perspectives: overall efficiency of
building management, reduction in energy consumption and return on
investment (ROI).
Efficient building management dictates, as an example: that all lights be
upgraded, that lamp inventory variations be minimized and that all appropriate
rooms have similar occupancy controls and setback thermostats - despite the
fact that a single or several rooms may have an unjustifiably long payback on
their individual lighting or controls upgrade.
Some of the summary EEM’s below contain individual EEM’s that are grouped
by type (i.e. all relevant lighting upgrades are summed and listed as a single
upgrade, all thermostat setback retrofits are grouped together and listed as a
single upgrade, etc.). They are prioritized as a group, with the highest ROI
(shortest payback) listed first. Table 3 at the end of this section summarizes
these EEM’s and Appendix B (the AkWarm-C detailed report) and Appendix D
provide additional detail pertaining to each individual recommendation.
A.) SETBACK THERMOSTATS
The cabinet unit heaters (CUH), unit heaters (UH) and radiant
ceiling panels in this building have local, low voltage thermostats
which should be replaced with digital thermostats that have
occupancy sensing, nighttime and unoccupied setback
capabilities. The air handlers and rooftop furnaces are controlled
by digital thermostats; it is recommended that these be checked to
assure that nighttime and unoccupied setback temperatures are
properly programmed for the current building usage.
It is further recommended that occupancy sensor thermostats (see
Appendix E) be retrofitted in residences as well as the
intermittently occupied common areas like the kitchen, exercise
and TV rooms so that heat is provided to these rooms only when
occupied. Finally, nearly every residence in the building has an
ancillary oil-filled electric heater which, onsite personnel stated,
have to be used when the OSA temperature is low (<25F) because
their rooms are uncomfortably cold. It is estimated that these
heaters are adding $2,412/yr in energy costs if they are operating
10 hrs/day during the coldest winter months. It is believed that
they could be eliminated after the retro-commissioning
recommended in EEM “E” below, either as a result of increasing
flow rates to this zone, or altering other HVAC settings.
Appendices B-1, 2, 3, 7 and 11 provide detail for this EEM.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 10 of 57
Combined Setback Thermostat EEM’s:
Estimated cost $4,500
Annual Savings $9,841
Payback 6 months
B.) REFRIGERATION & REFRIGERATED VENDING MACHINES
There are (3) refrigerated beverage vending machines, (5) full size
residential type refrigerators a small chest freezer and a large
upright freezer in this building. The (5) full size refrigerators are all
less than 10 years old and appear to be Energy Star models and
as such, there is no recommended retrofit. The (2) freezers
appear to be 15 years old or older and should be replaced at their
end of life (EOL) with Energy star models. The (3) vending
machines should have a vendingmiser (see
www.vendingmiser.com) installed, which saves an estimated 46%
of energy costs by cycling the machine during periods of non-use.
These EEM’s are found in Appendix B-5 & 8.
Combined refrigeration EEM’s:
Estimated cost (incremental difference
for the freezers) $ 1,200
Annual Savings $ 505
Payback 2.4 years
C.) HEADBOLT HEATERS
The (8) duplex outlet headbolt heaters outside this building should
be retrofitted with a microprocessor controlled duplex outlet that
cycles power based on ambient temperature and heater demand.
(See www.iplc.com). Appendix B-10 and Appendix E provided
additional detail.
Headbolt Heater EEM:
Estimated cost $ 2,000
Annual Savings $ 701
Payback 3 years
D.) DE-STRATIFICATION FANS
In the apparatus bay, there was a measured temperature
differential between the thermostat sensors and the ceiling of 9.8
F. It is recommended to add de-stratification fans in the apparatus
bay. See Appendix D-2 for more detail.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 11 of 57
De-Stratification Fan EEM:
Estimated cost $ 4,800
Annual Savings $ 1,434
Payback 3.3 years
E.) HVAC SYSTEM
RTU-7 repair
Onsite personnel stated that the heater in RTU-7 has not operated
“for years” and the temperature in the apparatus bay gets below
50F in the winter, because the sub-floor heating cannot keep up
with the incoming OSA. It is assumed that the fan in RTU-7
operates correctly, and is providing make up air when EF-6 and
EF-7 are on. It is recommended to repair this gas-fired unit.
Estimated costs and savings are not provided, this is a
maintenance recommendation.
Replace exhaust fans and make up air with air scrubbers
Air scrubbers, similar to those used in Fire Stations 11 and 12, are
more efficient than exhausting air and heating make up air each
time a vehicle enters or exits the apparatus bay. See Appendix D-
4 for details on estimated costs and savings; these figures are
included in the total for this EEM below.
Retro-commission the HVAC system
It is recommended to perform an engineering evaluation and retro-
commissioning of the HVAC & HVAC controls in this building. It is
assumed that HVAC maintenance including belts, bearings,
actuators, etc. are well managed by MOS. It is also assumed that
the HVAC controls have not been evaluated and adjusted for the
current occupancy and usage of this building since it was originally
commissioned 10-12 years ago. A typical, conservative, annual
energy savings of 10% ($4,407) of current building heating and
cooling costs would be expected after a retro-commissioning of the
control system. Estimated cost is $10,000.
HVAC System combined EEM’s:
Estimated cost $41,985
Annual savings $ 8,229
Payback 5.1 years
F.) LIGHTING AND LIGHTING CONTROLS
There are several incandescent bulbs in the residences, they
should be replaced with CFL bulbs. At the next re-lamp of the
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 12 of 57
building, all T8-32 watt lamps should be replaced with T8-28 watt
energy saver lamps. All exterior lighting should be replaced with
LED lamps and all rooms in the building should have occupancy
sensors installed. The apparatus bay should have ceiling
mounted, zoned occupancy sensors installed, so that only the row
or section of lighting above the occupant is lit. This lighting could
be integrated with the alarm/call notification system so that all
appropriate apparatus/hallway/common area lighting is turned on
when a fire alarm is recognized. This requires a digital lighting
management system (LMS) similar to one shown in Appendix E,
which is not included in the estimated cost of this EEM.
This EEM summarizes Appendix B-4, 6, 9, 12 through 17 and 19.
See Appendix E for more information on occupancy sensors.
Combined Lighting Control EEM’s:
Estimated cost $ 44,657
Annual Savings $ 5,783
Payback 7.7 years
A summary of the estimated cost totals and estimated annual savings
totals of the eight (A. through H.) summary EEM’s listed above, is found
in Table 3 below, and again at the end of Appendix B.
Table 3
Combined total of recommended EEM’s
summarized above:
Estimated total cost $ 99,143
Annual Savings $ 26,493
Simple payback 3.7 years
Does not include design or construction management costs
In addition to EEM’s, various Energy Conservation Measures (ECM’s) are
recommended. ECM’s are policies or procedures to be followed by
management and employees that require no capital outlay. ECMs
recommended for this facility include:
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 13 of 57
1. Turn lights off when leaving a room that is not controlled by an
occupancy sensor.
2. All man-doors, roll-up doors and windows should be properly
maintained and adjusted to close and function properly.
3. Turn off computers, printers, faxes, etc. when leaving the office.
4. Re-configure building occupants to group un-occupied offices (i.e.
no tenant or staff using the space), rooms and spaces into the
same HVAC zone so that zone’s energy consumption can be set
back to minimal levels.
5. A building is a living mini-ecosystem and its use changes. Re-
evaluate building usage annually and confirm that building set
points, zones, lighting levels, etc. are optimized for the current
usage and occupancy.
6. Re-lamp the entire building or entire usage zones (a zone of the
building that has similar lighting usage, so lamps have roughly the
same lifetime) as part of a scheduled preventative maintenance
routine. This assures all lamps are the same color temperature
(e.g. 3000K) which enhances occupant comfort and working
efficiency. It also minimizes expense because it is more cost
effective to order large quantities of the same lamp, and more
labor efficient to dedicate maintenance staff to a single re-lamp
activity in a building zone, rather than replace individual lamps as
they fail.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 14 of 57
2. Audit and Analysis Background
Program Description: This audit included services to identify, develop, and
evaluate energy efficiency measures for the subject building. The scope of this
project included evaluating the building shell, lighting, hot water generation and
HVAC equipment. The auditor may or may not identify system deficiencies if
they exist. The auditor’s role is to identify areas of potential savings, many of
which may require more detailed investigation and analysis by other qualified
professionals.
a. Audit Description and Methodology: Preliminary audit information was
gathered in preparation for the site survey, including benchmark utility
consumption data, floor and lighting plans, and equipment schedules where
available. A site visit is then performed to inventory and evaluate the actual
building condition, including:
i. Building envelope (walls, doors, windows, etc)
ii. Heating, ventilating, and air conditioning
iii. Lighting systems and controls
iv. Building specific equipment
v. Plumbing Systems
b. Benchmark Utility Data Validation: Benchmark utility data provided
through AHFC’s initial phase of their REAL program is validated, confirming
that meter numbers on the subject building match the meters from which the
energy consumption and cost data were collected. If the data is inaccurate
or missing, new benchmark data is obtained. In the event that there are
inconsistencies or gaps in the data, the existing data is evaluated and
missing data points are interpolated.
c. Method of Analysis: The information gathered prior to the site visit and
during the site visit is entered into AkWarm-C, an energy modeling software
program developed specifically for AHFC to identify forecasted energy
consumption. The forecasts can then be compared to actual energy
consumption. AkWarm-C also has some pre-programmed EEM retrofit
options that can be analyzed with projected energy savings based on
occupancy schedules, utility rates, building construction type, building
function, existing conditions, and climatic data uploaded to the program
based on the zip code of the building. When new equipment is proposed,
energy consumption is calculated based on manufacturer’s cataloged
information.
Energy cost savings are calculated based on the historical energy costs for
the building. Installation costs include the labor and equipment required to
implement an EEM retrofit, but design and construction management costs
are excluded. Cost estimates are +/- 30% for this level of audit, and are
derived from one or more of the following: Means Cost Data, industry
publications, experience of the auditor, local contractors and/or equipment
suppliers. Brown Electric, Haakensen Electric, Proctor Sales, Pioneer Door,
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 15 of 57
and J.P. Sheldon, all in Anchorage, were consulted for some of the lighting,
boiler, overhead door and air handling retrofit and/or replacement costs.
Maintenance savings are calculated, where applicable, and are added to the
energy savings for each EEM.
The costs and savings are considered and a simple payback period and ROI
is calculated. The simple payback period is based on the number of years
that it takes for the savings to pay back the net installation cost (Net
Installation costs divided by Net Savings.) In cases where the EEM
recommends replacement at EOL, the incremental cost difference between
the standard equipment in place, and the higher efficiency equipment being
recommended is used as the cost basis for payback calculation. The SIR
found in the AkWarm-C report is the Savings to Investment Ratio, defined as
the annual savings multiplied by the lifetime of the improvement, divided by
the initial installed cost. SIR’s greater than 1.0 indicate a positive lifetime
ROI.
The life-time for each EEM is entered into AkWarm-C; it is estimated based
on the typical life of the equipment being replaced or altered.
d. Limitations of the Study: All results are dependent on the quality of input
data provided, and may only act as an approximation. Most input data such
as building and equipment usage, occupancy hours and numbers, building
and HVAC operating hours, etc. was provided to the auditor by on site
personnel.
In some instances, several methods may achieve the identified savings.
This report is not a design document. A design professional, licensed to
practice in Alaska and in the appropriate discipline, who is following the
recommendations, shall accept full responsibility and liability for the results.
Budgetary estimates for engineering and design of these projects in not
included in the cost estimate for each EEM recommendation, but these costs
can be approximated at 15% of the cost of the work.
3. Acknowledgements: We wish to acknowledge the help of numerous individuals
who have contributed information that was used to prepare this report, including:
a. Alaska Housing Finance Corporation (Grantor): AHFC provided the grant
funds, contracting agreements, guidelines, and technical direction for
providing the audits. AHFC reviewed and approved the final short list of
buildings to be audited based on the recommendation of the Technical
Service Provider (TSP).
b. The Municipality of Anchorage (Owner): MOA provided a review and brief
history of the benchmarked buildings, building selection criteria, building
plans, equipment specifications, building entry and coordination with on-site
personnel.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
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c. Central Alaska Engineering Company (Benchmark TSP): CAEC oversaw
the compilation of electrical and natural gas consumption data through their
subcontractor, Energy Audits of Alaska, LLC. CAEC also entered that data
into the statewide building database, called the Alaska Retrofit Information
System (ARIS). CAEC was awarded the auditing contract for this MOA
building.
d. Energy Audits of Alaska (energy auditor): This firm has been selected to
provide audits under this contract. The firm has two mechanical engineers,
certified as energy auditors and/or professional engineers and has also
received additional training from CAEC and other TSP’s to acquire further
specific information regarding audit requirements and potential EEM
applications.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
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4. Building Description and Function:
The site visit and survey of subject building occurred on February 6th, 2012.
Both buildings on this site, the fire station and an administration building, are two
story structures. The buildings are not connected, but the fire station boilers
supply heat to the administration building and it’s sub-sidewalk snow melt
system and they share a single electric meter, so they are combined in this
audit.
The administration building houses a small museum on its first floor and offices
on its second floor. The fire station has a large apparatus bay (over 8400
square feet), mechanical rooms, laundry, hose drying and work rooms on its first
floor and common areas including a kitchen, exercise facility and TV room,
multiple offices and 20 dormitory style residence rooms on its second floor. The
fire station also has an attached 4-story hose drying facility.
The administration building has 5567 square feet while the fire station has
24,324 square feet including 8417 square feet contained in the apparatus bay.
The total building size, calculated from plans is 29,891 square feet.
This building is constructed on a 6” reinforced concrete slab poured on grade
under the apparatus bay and a 4” slab under all other spaces. The building
structure consists of either 12” concrete masonry unit (CMU) and 6” metal stud
walls. The support a 4” poured concrete second floor and steel roof trusses with
metal roof decking. Roof insulation consists of tapered rigid foam with a
minimum thickness of 3” (R-15) covered with an EDPM membrane. Wall
insulation values as calculated by AkWarm-C are R-16.0 for the 6” metal stud
walls and R-12.1 for the first floor south wall which consists of CMU’s covered
with 2” of rigid foam.
Exterior walls are covered either with metal siding or rock veneer. Interior walls
are either painted CMU or gypsum. All windows in this building are double pane
aluminum and in good condition. Overall, both buildings are very well
maintained and in excellent condition.
Building details are as follows:
a. Heating, Cooling, Ventilation and Controls: Heat is
provided by two gas fired, dual fuel boilers via hydronic finned
tube baseboard radiators, radiant ceiling panels, cabinet unit
heaters at all entry points and unit heaters in mechanical and
work rooms. Heated ventilation is provided by (7) gas fired
rooftop furnaces, although one of them, RTU-7 has
nonfunctional heat. Cooling is provided by (6) of the rooftop
units and (2) split-system air conditioning units. All hydronics
except the unit heaters are fluid valve controlled by local, low
voltage thermostats – some of which have been retrofitted
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 18 of 57
with digital models. The unit heaters have wall mounted
thermostats controlling the fan with glycol running wild (i.e. no
fluid control valve). The RTU’s are controlled by zone using
digital thermostats. End effectors are electric actuators and
fans are not variable speed. There is not a building-wide,
integrated HVAC control system.
Apparatus bay: The HVAC design for this space presumably
called for heat to be provided by sub-floor hydronics and the
gas-fired furnace & make up air unit (MAU), RTU-7. The
heating function of RTU-7 has been inoperable for several
years, consequently, when OSA temperatures fall below 15F
or so, this bay cannot be maintained at comfortable
temperatures.
Snow Melt: There are heated aprons on the north and south
sides of the apparatus bay and on a portion of the north
sidewalk outside the administration building. The snow melt
system is supplied through a flat plate heat exchanger
located in the boiler room and controlled by a Tekmar 662
controller.
Energy Recovery: An air to air heat recovery unit was
installed in 2007, it runs continuously.
Cooling: Six of the seven RTU’s also have cooling capacity
totaling 27.25 Tons. Additionally, there are two 3-Ton units
serving the residence rooms.
b. Appliances: There are (5) residential type refrigerators, (2)
gas range/oven units, (3) dishwashers and (3) microwaves in
the well equipped kitchen in this fire station. There is also a
large commercial clothes washer and electric dryer for
contaminated clothing, as well as a stacked washer/dryer for
street clothes.
This building has 15 PC’s in use; it is generally recommended
to replace desktop PC’s with laptops at EOL.
c. Plumbing Fixtures: This building contains a total of (10)
toilets, (5) urinals, (10) lavatory sinks and (6) showers. All
have manual valves except the lavatory sinks, which have
proximity sensing valves. The toilets consume 1.6 gallons
per flush (gpf), the urinals 1.0 gpf and the shower heads
appear to have a 2.6 gallons per minute (gpm) flow rate. See
Appendix D-1 for EEM recommendations.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 19 of 57
d. Domestic Hot Water: Hot water for sinks and showers is
provided by (4) indirect hot water generators supplied by the
boilers. There is an additional electric hot water heater
located in the administration building, providing hot water to
its lavatory sinks.
e. Interior Lighting & Controls: There does not appear to have
been any lighting upgrades since the building was
constructed in 2000. Room lighting generally consists of T8-
32W fixtures with electronic ballasts. The only occupancy
sensor in the building is located in the main entry to the fire
station. There are (2) metal halide fixtures in the hose drying
tower. Appendix B details the recommendation of a full
lighting upgrade. See Appendix E for additional information
on occupancy sensors. All exit signs in the building are either
LED or unlit, self luminous.
f. Exterior Lighting: There are (12) wall pack lights on the
exterior of this building; (11) that appear to use 150 watt high
pressure sodium bulbs and one using a 1000 watt metal
halide bulb. There are 27 HPS-70 watt or 100 watt soffit
lights and (2) non-functional landscape/art uplights.
g. Building Shell: The building shell is described earlier; it
appears to be in good condition, inside and out.
h. Motors: There are 3 large (5 HP or larger) motors in use in
this building. They are listed in Appendix C and were
considered for replacement with premium efficiency motors,
see Appendix D-3.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 20 of 57
5. Historic Energy Consumption: Energy consumption is modeled within the
AkWarm-C program. The program typically analyzes twelve months of data.
Two year’s worth of natural gas and electricity consumption were averaged then
input into AKWarm-C. This monthly data is found in Appendix F.
Energy consumption was analyzed using two factors: the Energy Cost Index
(ECI) and the Energy Use Index (EUI). The energy cost index takes the annual
costs of natural gas and electrical energy over the surveyed period of time (two
years) divided by the square footage of the building. The ECI for this building is
$2.94/SF, the ECI for two very similar buildings, Fire Station’s 11 and 12, are
$3.47 and $5.33 respectively.
The energy use index (EUI) is the total annual average electrical and heating
energy consumption expressed in thousands of BTU/SF. The average of the
2009 and 2010 EUI for this building is 225 kBTU/SF; the average 2009/2010
EUI for Fire Station 11 is 171 kBTU/SF and 267 kBTU/SF for Fire Station 12.
The average for Public Order and Safety buildings across the US is 116
kBTU/SF as logged by the US Energy Information Administration. This source
data can be viewed at:
www.eia.gov/emeu/efficiency/cbecstrends/cbecs_tables_list.htm.
6. Interactive Effects of Projects: The AkWarm-C program calculates savings
assuming that all recommended EEM are implemented in the order shown in
Appendix B. Appendix D EEM’s are not included in the AkWarm-C model
unless referred to in the Appendix B EEM as “see also Appendix D-X”; in these
cases, the EEM is included in the AkWarm-C calculations. If some EEMs are
not implemented, savings for the remaining EEMs will be affected, in some
cases positively, and in others, negatively.
In general, all projects were evaluated sequentially so that energy savings
associated with one EEM would not be attributed to another EEM as well. By
modeling the recommended projects sequentially, the analysis accounts for
interactive effects between the EEMs and does not “double count” savings.
Interior lighting, plug loads, facility equipment, and occupants generate heat
within the building. When the building is in cooling mode, these contribute to the
overall cooling demands of the building; therefore lighting efficiency
improvements will reduce cooling requirements on air conditioned buildings.
Conversely, lighting efficiency improvements are anticipated to increase heating
requirements slightly. Heating penalties resulting from reductions in building
electrical consumption are included in the lighting analysis that is performed by
AkWarm-C.
7. Loan Program: The Alaska Housing Finance Corporation (AHFC) Alaska
Energy Efficiency Revolving Loan Fund (AEERLF) is a State of Alaska program
enacted by the Alaska Sustainable Energy Act (senate Bill 220, A.S. 18.56.855,
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 21 of 57
“Energy Efficiency Revolving Loan Fund). The AEERLF will provide loans for
energy efficiency retrofits to public facilities via the Retrofit Energy Assessment
for Loan System (REAL). As defined in 15 AAC 155.605, the program may
finance energy efficiency improvements to buildings owned by:
a. Regional educational attendance areas;
b. Municipal governments, including political subdivisions of municipal
governments;
c. The University of Alaska;
d. Political subdivisions of the State of Alaska, or
e. The State of Alaska
Native corporations, tribal entities, and subsidiaries of the federal government
are not eligible for loans under this program.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 22 of 57
Appendix A - Photos
Administration building on left, fire station on right, hose drying tower in left
center
Administration building – museum on first floor, offices on second floor
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 23 of 57
Snow melt aprons outside fire station entry/exit doors
Apparatus bay with subfloor heat
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 24 of 57
Residence hall
Exercise facility
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 25 of 57
Kitchen dining area
TV room
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 26 of 57
Apparatus sub-floor heat thermostat – note it is “pegged” on at 110F; without operative
RTU-7 heat, sub-floor heat cannot maintain reasonable temperatures in the apparatus
bay. The slam temperature was measured at 80 F.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 27 of 57
Aerial View of the subject building
Administration Building
Fire Station
NORTH
Appendix B – Detailed AkWarm-C report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Fire Station #1 & Fire Station Administration Offices
Page 28
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 5/3/2012 11:33 AM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: Fire Station #1 & Fire Station Administration
Offices
Auditor Company: Energy Audits of Alaska
Address: 100 & 122 East 4th Auditor Name: James Fowler
City: Anchorage Auditor Address: 5935 Pioneer Park Pl
Langley, WA 98260
Client Name: Paul Urbano
Client Address: 100 East 4th
Anchorage, AK 99501
Auditor Phone: (206) 954‐3614
Auditor FAX: ( ) ‐
Client Phone: (907) 267‐5001 Auditor Comment:
Client FAX:
Design Data
Building Area: 29,891 square feet Design Heating Load: Design Loss at Space: 2,720,827
Btu/hour
with Distribution Losses: 2,945,175 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and
25% Safety Margin: 4,489,597 Btu/hour
Note: Additional Capacity should be added for DHW load,
if served.
Typical Occupancy: 35 people Design Indoor Temperature: 68.6 deg F (building average)
Actual City: Anchorage Design Outdoor Temperature: ‐18 deg F
Weather/Fuel City: Anchorage Heating Degree Days: 10,816 deg F‐days
Utility Information
Electric Utility: Anchorage ML&P ‐ Commercial ‐ Lg Natural Gas Provider: Enstar Natural Gas ‐ Commercial ‐
Lg
Average Annual Cost/kWh: $0.110/kWh Average Annual Cost/ccf: $0.811/ccf
Annual Energy Cost Estimate
Description Space
Heating
Space
Cooling
Water
Heating Lighting Refrige
ration
Other
Electric
al
Cooking Clothes
Drying
Ventilatio
n Fans
Service
Fees Total Cost
Existing
Building
$44,069 $6,200 $4,467 $15,357 $1,553 $9,914 $0 $0 $3,634 $1,842 $87,037
With
Proposed
Retrofits
$30,029 $5,876 $4,573 $8,409 $1,001 $5,042 $0 $0 $3,662 $1,842 $60,434
SAVINGS $14,040 $324 ‐$105 $6,948 $552 $4,872 $0 $0 ‐$28 $0 $26,603
Appendix B – Detailed AkWarm-C report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Fire Station #1 & Fire Station Administration Offices
Page 29
Appendix B – Detailed AkWarm-C report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Fire Station #1 & Fire Station Administration Offices
Page 30
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Room electric oil‐
filled heaters
Eliminate after Retro‐
commissioning radiant
panels
$2,412 Included
in Setback
Thermost
at and
HVAC
retro‐
commissi
oning
costs
14755.00 0
2 Setback Thermostat:
Apparatus Bay
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for
the Apparatus Bay space.
$830 $200 53.61 0.2
3 Setback Thermostat:
Offices, corridors,
common areas other
than kitchen, TV, rec
& workout rooms
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for
the Offices, corridors, &
common areas other than
kitchen, TV, rec & workout
rooms space.
$6,134 $2,000 39.60 0.3
4 Lighting:
Incandescent ‐
residential section
Replace with 13 FLUOR
CFL, A Lamp 15W
$212
+ $65 Maint.
Savings
$130 13.11 0.6
5 Refrigeration:
Freezers
Replace with 2 Energy Star
versions
$98 $150 9.19 1.5
6 Lighting:
Incandescent ‐
offices
Replace with 18 LED 17W
Module StdElectronic
$186
+ $90 Maint.
Savings
$450 8.79 2.4
7 Setback Thermostat:
Kitchen, Rec & TV
rooms, exercise
room
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Kitchen, Rec & TV
rooms, exercise room
space.
$266 $500 6.86 1.9
8 Refrigerated Vending
machines
Add Vendingmiser
(www.vendingmiser.com)
$407 $1,050 2.38 2.6
9 Lighting: T8‐3lamp,
add OS ‐ residential
section
At next building re‐lamp,
replace (133) 32 watt
lamps with 133 FLUOR (3)
T8 4' F32T8 28W Energy‐
Saver Instant StdElectronic
and Remove Manual
Switching and Add new
Occupancy Sensor
$1,874 $5,169 2.22 2.8
Appendix B – Detailed AkWarm-C report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Fire Station #1 & Fire Station Administration Offices
Page 31
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
10 Head Bolt Heaters Remove Manual Switching
and Add new Other
Controls
$701 $2,000 2.17 2.9
11 Setback Thermostat:
Residences
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Residences space.
$199 $1,800 1.43 9
12 Lighting: Exterior
soffit lighting ‐ HPS‐
70
Replace with 16 LED 17W
Module StdElectronic
$268 $1,200 1.38 4.5
13 Lighting: T8‐2lamp,
add OS ‐ residential
section
At next building re‐lamp,
replace (22) 32 watt lamps
with 22 FLUOR (2) T8 4'
F32T8 28W Energy‐Saver
Instant StdElectronic and
Remove Manual Switching
and Add new Occupancy
Sensor
$209 $1,032 1.24 4.9
14 Lighting: Exterior
Soffit lighting HPS‐
100
Replace with 19 LED 34W
Module StdElectronic
$379 $1,900 1.23 5
15 Lighting: T8‐3lamp;
already OS ‐ offices
Replace with 2 FLUOR (3)
T8 4' F32T8 28W Energy‐
Saver Instant StdElectronic
$3 $18 1.09 5.7
16 Lighting: T8‐2lamp,
add OS ‐ offices
At next building re‐lamp,
replace (208) 32 watt
lamps with 208 FLUOR (2)
T8 4' F32T8 28W Energy‐
Saver Instant StdElectronic
and Remove Manual
Switching and Add new
Occupancy Sensor
$1,197 $6,998 1.05 5.8
17 Lighting: T8‐3lamp,
add OS ‐ offices
At next building re‐lamp,
replace (90) 32 watt lamps
with 90 FLUOR (3) T8 4'
F32T8 28W Energy‐Saver
Instant StdElectronic and
Remove Manual Switching
and Add new Occupancy
Sensor
$766 $5,760 0.82 7.5
Appendix B – Detailed AkWarm-C report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Fire Station #1 & Fire Station Administration Offices
Page 32
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
18 Other Electrical:
Personal Computers
Replace with 15 Laptop at
EOL; This EEM is not
economically justified
since average laptop life is
3‐5 years, but still
recommended as many
users prefer laptops and it
does provide energy
savings
$484 $3,000 0.74 6.2
19 Lighting: Exterior
HPS‐150 wall packs
Replace with 11 LED 50W
Module StdElectronic
$314
+ $220 Maint.
Savings
$22,000 0.15 70.1
THE FOLLOWING EEM’S WERE CALCULATED OUTSIDE OF AkWARM-C. Savings will affect and
be affected by the EEM’s listed above, depending on their order of implementation.
See
Appe
ndix
D‐1
Plumbing Fixtures:
(10) W.C., (10)
lavatories, (5)
urinals, (6) showers
Replace urinal valves with
proximity sensing on/off
controls, replace urinals
with ultra‐low flow and
proximity sensing controls;
retrofit toilet valves with
2‐stage valves
See
Appe
ndix
D‐2
De‐Stratification
Fans
Install (10) de‐stratification
fans in pool area.
$1,434 $4,800 3.0 3.3
See
Appe
ndix
D‐4
Air Scrubbers Eliminate EF‐6 & EF‐7,
replace with 4 air
scrubbers;, use RTU‐7 for
heat only
$3,822 $31,985 1.2 8.3
Retro‐commissioning
HVAC system
$4407 $10,000 4.4 2.3
TOTAL $26,603
+ $375 Maint.
Savings
$102,143 2.87 4.1
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
AkWarmCalc Ver 2.2.0.1, Energy Lib 4/6/2012
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 33 of 57
Appendix C – Equipment Schedules
ALL SCHEDULES COMPILED FROM PLANS OR ON‐SITE NAMEPLATE OBSERVATION,
WHERE ACCESSIBLE e= estimated
COOLING AND HEATING ROOFTOP UNIT SCHEDULE
SYMBOL MFGR/MODEL FAN CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
RTU‐1
Trane YCD049C1HAAA; 4
Ton, 52.2 MBH 1600 .5/208/3e Offices ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .75/208/3e Offices ‐ heating
RTU‐2A
Trane YCD049C1HAAA; 4
Ton, 52.2 MBH 1600 .5/208/3e Offices ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .75/208/3e Offices ‐ heating
RTU‐2B
Trane YCD037C1HAAA; 3
Ton, 39.5 MBH 1200 .5/208/3e Exhibit area ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .5/208/3e Exhibit area ‐ heating
RTU‐3
Trane YCD037C1HAAA; 3
Ton, 39.5 MBH 1200 .5/208/3e Dining ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .5/208/3e Dining ‐ heating
RTU‐4
Trane YCD075C1HAAA; 6.25
Ton, 78.3 MBH 2500 .75/208/3e Rec room ‐ cooling
205 MBH input, 150 MBH
output, 73% efficient 1/208/3e Rec room ‐ heating
RTU‐5
Trane YCD049C1HAAA; 4
Ton, 52.2 MBH 1600 .5/208/3e First floor ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .75/208/3e First floor ‐ heating
RTU‐6
Trane YCD037C1HAAA; 3
Ton, 39.5 MBH 1200 .5/208/3e TV room ‐ cooling
120 MBH input, 94 MBH
output, 78% efficient .5/208/3e TV room ‐ heating
RTU‐7
Rupp RXH218‐1000; 1250
MBH input, 1000 MBH out,
80% efficient 11,200 7.5/208/3
Apparatus Bays ‐ interlocked to OH
door opening through EF‐6 and EF‐
7 ‐ HEATING REPORTED BY ONSITE
PERSONNEL TO BE NON‐
FUNCTIONAL FOR LAST 5‐7 YEARS;
assumed today, to provide only
unheated make up air
AC‐1
Trane TDC036F300A; 3 Ton,
39.5 MBH 1200 .75/208/3E residences ‐ cooling only
AC‐2
Trane TDC036F300A; 3 Ton,
39.5 MBH 1200 .75/208/3E residences ‐ cooling only
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 34 of 57
HRU‐1 Innovent 5000 air to air heat
exchanger installed in 2007
1800 1.5/208/3
Heat recovery fan ‐ supply side ‐
runs continuously
1800 1.0/208/3
Heat recovery fan ‐ exhaust side ‐
runs continuously
DE‐STRATIFICATION FAN SCHEDULE
SYMBOL MOTOR MFGR/MODEL CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
DF‐1 unknown ‐ 60W/115/1
In administration
building
DF‐2 unknown ‐ 60W/115/1
In administration
building
DF‐3 unknown ‐ 60W/115/1
In administration
building
DF‐4 unknown ‐ 60W/115/1
In administration
building
EXHAUST FAN SCHEDULE
SYMBOL MOTOR MFGR/MODEL CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
VF‐1 Greenheck S‐18 2200 .25/120/1
supplies
combustion air
for boilers; on
adjustable wall
thermostat
EF‐1 Cook 90R150L 400 .125/120/1
Office toilet
rooms
EF‐2 Cook 120R10D 720 .125/120/1 Shower room
EF‐3 Cook 100515DL 310 .125/120/1
second floor
toilets
EF‐4 Cook 10R150H 570 .125/120/1 showers
EF‐5 Cook GC‐140 100 70w/120/1 elevator fan
EF‐6 Cook 195W8B 5600 1.5/208/3
Apparatus bay,
interlocked with
OH doors
EF‐7 Cook 210 SQN‐8 5600 1.5/208/3
Apparatus bay,
interlocked with
OH doors
EF‐8 Cook GC140 100 70w/120/1
Communications
room
EF‐9 Fantech DBF 4XL 139 75w/120/1 Dryer booster
KH‐1 Broan 48000 230 300w/120/1
Cabinet hood ‐
kitchen
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 35 of 57
KH‐2A Imperial IS4S1900PS 740 300w/120/1
Island range
hood ‐ kitchen
KH‐2B Imperial IS4S1900PS 740 300w/120/1
Island range
hood ‐ kitchen
PUMP SCHEDULE
SYMBOL MFGR/MODEL GPM
MOTOR DATA
HP/VOLTS/PH REMARKS
CP‐1 Grundfos UPS 40‐240 2F 41 990w/208/3 Fire Station main
heating loop; 1 in
use at a time CP‐1A Grundfos UPS 40‐240 2F 41 990w/208/3
CP‐2 Grundfos UPS 40‐240 2F 22 990w/208/3 Administration
Bldg main
heating loop; 1 in
use at a time CP‐2A Grundfos UPS 40‐240 2F 22 990w/208/3
CP‐3 Grundfos 50‐80 4F 71 640/208/3
on "hand"
radiant heat and
snow melt
CP‐4 Grundfos 32‐160 F 40 430w/208/3
on "hand"; circ
to HWG
CP‐5 Grundfos UPS 40‐160F 26 800w/208/3
Radiant slab
system circ ‐ on
"hand"
CP‐5‐1 Emerson P55 BLZ‐96 21 .5/200/3
supplies HRU‐1,
on "Hand"
(sequence of
operations call
for on when OSA
temp <60F)
CP‐6 Grundfos UPS 15‐42 F 9 85w/115/1
Radiant slab
injection
CP‐7 Grundfos UP 43‐75 F 31 215/115/1
snow melt heat
exchanger hot
side
CP‐8 Grundfos UP 2‐64 F 25 185w/115/1
snow melt
injector
CP‐9 Grundfos UPS 40‐160 34 800w/208/3
snow melt
system pump
CP‐10 Grundfos 15‐42 8 3 85w/115/1 DHW re‐circ
CP‐11 Grundfos UP 43‐75 F 3 215/115/1
anti‐shock
circulator on
boiler
CP‐12 Grundfos UP 43‐75 F 3 215/115/1
anti‐shock
circulator on
boiler
SP‐1 Grundfos SU25 10 .25/115/1 Elevator pit
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 36 of 57
sump pump
SP‐2 Grundfos SU25 10 .25/115/1
Elevator pit
sump pump
BOILER SCHEDULE
SYMBOL MFGR/MODEL CONTROLS
MOTOR DATA
HP/VOLTS/PH REMARKS
B‐1 Burnham V910A 690W/115/1 1/115/1
1528 MBH input,
1329 MBH
output, 87%
efficient, gas
fired (dual fuel
burner) cast iron
sectional
B‐2 Burnham V910A 690W/115/1 1/115/1
1528 MBH input,
1329 MBH
output, 87%
efficient, gas
fired (dual fuel
burner) cast iron
sectional
UNIT HEATER SCHEDULE
SYMBOL MFGR/MODEL CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
UH‐1 Beacon Morris HB‐24; 17,400 MBH 450 9w/115/1
located in
generator room
UH‐2 Beacon Morris H‐72S; 52,000 MBH 1100 .05/115/1
located in hose
tower
CUH‐1 Dunham Bush CUH‐100; 19,900 MBH 175 .035/120/1
South stairwell
Admin bldg
CUH‐2 Dunham Bush CUH‐100; 19,900 MBH 175 .035/120/1
Vestibule Fire
station
CUH‐3 Dunham Bush CUH‐100; 19,900 MBH 175 .035/120/1
Stairwell Fire
station
CUH‐4 Dunham Bush CUH‐100; 19,900 MBH 175 .035/120/1
second floor
vestibule
CUH‐5 Dunham Bush CUH‐100; 19,900 MBH 175 .035/120/1
Second floor
lobby
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 37 of 57
HOT WATER GENERATOR SCHEDULE
SYMBOL MFGR/MODEL GALLONS
NUMBER OF
ELEMENTS ELEMENT SIZE
HWG‐1 Amtrol WHS120ZCDW 119
Indirect water
generator; set at
120F
HWG‐2 Amtrol WHS120ZCDW 119
Indirect water
generator; set at
120F
HWG‐3 Superstor 119
Indirect water
generator; set at
134F
HWG‐4 Amtrol WHS120ZCDW 119
Indirect water
generator; set at
120F
HWH‐1 Bradford White 12 1
1500 watts,
located in Admin
bldg for DHW for
lavatories & sinks
HEAT EXCHANGER SCHEDULE
SYMBOL MFGR/MODEL REMARKS
HX‐1 Flat Plate, Snow Melt
Snow melt, 31 gpm hot side,
24.9 gpm cold side
Tekmar 662
controller
PLUMBING FIXTURES
SYMBOL FIXTURE GPF QUANTITY REMARKS
W.C. 1.6 10
manually
operated
Urinal 1 5
manually
operated
Lavatory n/a 10
with proximity
sensing valves
Showers 2.6e 6
manually
operated
Clothes washer ‐ commercial 1
Large load
contaminated
clothing, runs 5‐8
loads/day
Stacked clothes washer/dryer 1
runs 8‐10 loads
per day
Residential type electric clothes dryer 1
runs 8‐10 loads
per day
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 38 of 57
EQUIPMENT
SYMBOL FIXTURE QUANTITY
MOTOR DATA
HP/VOLTS/PH REMARKS
Elevator ‐ Fire Station 1 20/408/3 used 3‐4x/day
Elevator ‐ Admin Bldg 1 20/408/3 used 15x/day
PLUG LOAD SUMMARY
SYMBOL FIXTURE QUANTITY
MOTOR DATA
HP/VOLTS/PH REMARKS
Personal printers 1 20/408/3
desk and task lighting 1 20/408/3
chop saw 1 .25/115/1
UPS, Hubs, ethernet switches 1 rack est 1000 w
boot dryers 2 200 w
handheld radio battery charging stations 16 85w
personal coffee machine 1 450w
Epson projectors 2 400w
Wall hand and hair dryers 1 2000w
Extra PC monitors 9 125w
Large Screen TV's 5 450w
Sound system 1 1500w
paper shredders 2 500w
large copy/scan/fax machines 2 1250 w
Truck drop for battery charging 10 20a/115/1
trickle charges
batteries
Treadmills 2 1500w/115/1 used 3‐4 hrs/day
Residential dishwasher 1 run 10x/day
Electric Oven 1 used 2‐3 hrs/day
Gas range 1
2 burners 4‐6
hrs/day
Kitchenaid mixer 1 used 10 min/day
toasters 1 used 1 hr/day
microwaves 2
used 1 hr/day
each
Liftmaster OH door openers 10 .75/208/3
Fan drying hoses 1 .3/115/1
runs
continuously
Hose Lift 2 e.25/115/1
each lift used
2x/day
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 39 of 57
LIGHTING SCHEDULE
FIXTURE
TYPE DESCRIPTION LAMPS MOUNTING
NUMBER WATTS TYPE HEIGHT
Wall pack HPS ‐ Exterior, magnetic ballast 1 150 surface 20'
Wall pack Metal Halide ‐ Exterior, magnetic ballast 1 1000 surface 20'
Recess can HPS recessed fixture 1 70 recess soffit
Recess can HPS recessed fixture 1 100 recess soffit
T8‐3 Florescent, T8 lamps, electronic ballast 3 32 surface ceiling
T8‐2 Florescent, T8 lamps, electronic ballast 2 32 recess ceiling
Recess can CFL, electronic ballast 2 18 recess ceiling
Recess can CFL, electronic ballast 2 26 sconce 7'
Incandescent table lamps 1 60 surface 4'
Pendant Metal Halide ‐ interior, magnetic ballast 1 400 hanging 28'
LARGE MOTOR SCHEDULE
Motor
use &
location
(5 HP or
larger) HP/Volts/Ph
Existing
Efficiency
Premium
Efficiency
Estimated
annual
usage
(hrs)
Annual
Savings
Burn‐out
payback
(yrs/cost)
Replacement
payback
(yrs/cost)
RTU‐7 7.5/208/3 e82.3% 91.70% 365 $23.47 8.5/$200 38.3/$900
Elevator
1 20/408/3 72% 93.00% 8 insufficient operating hours to justify
replacement with premium efficiency
motors Elevator
2 20/408/3 e72% 93.00% 32
Efficiency ratings at Full Load, per nameplate
e = estimated because nameplate not accessible or information not on nameplate
Payback figures based on power consumption at 66% of full load
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 40 of 57
Appendix D
Additional, Building-Specific EEM details
Appendix D-1: Plumbing fixtures: All urinals should be retrofitted or be replaced
with ultra low flow models. The lavatory faucets in this building already have proximity
sending on/off valves. Urinals should have proximity sensing on/off controls as well.
All toilets in this building are 1.6 gallons per flush with manual valves, they should be
retrofitted with dual flush valves (see below). This audit does not include water usage
and AkWarm-C does not allow for the modeling of it, but a typical ultra low flow urinal
(1 pint to ½ gallon per flush) can save up to 66% of water used, and typically pays
back within 3 years, depending on usage. Dual flush toilet valves will typically pay
back within 1-3 years, depending on usage. These payback periods are reduced by
66% or more if the fixture or valve is replaced at its EOL rather than while it’s still
functioning. For an EOL replacement, the cost used is the incremental difference in
cost between an ultra-low-flow fixture and a straight across replacement with the same
fixture.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 41 of 57
Appendix D-2: De-Stratification Fans: The apparatus bay (29’ ceilings) in this
building makes up approximately 28% of the total square footage and is estimated to
consume approximately 20% of the total space heating costs, equal to $7,174 after
implementation of all EEM’s. The measured temperature differential between the
thermostats and the ceiling was 9.8 F. Per the chart below, anticipated savings by
adding de-stratification fans should be 20%. This results in an annual savings of
$1,434 after implementation of all EEM’s. Estimated cost to install a de-strat fan over
the pool is $1200 each; assuming 4 fans are appropriate (number, location and size of
fans must be determined by an engineer or fan vendor), total costs are $4,800 and
payback is 3.3 years.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 42 of 57
Appendix D-3: EEM’S considered but not recommended
Variable frequency drives (VFD): Motors considered for VFD’s included the (2) 20 HP
elevator motors, the 7.5 HP in RTU-7, the 4 main glycol circulation pumps for the Fire
Station and Administration building and the snow melt circ pump. The elevator and
RTU-7 motors have insufficient operating hours and the circ pumps have a 10 year
payback. Additionally, RTU-7 is used for make-up air and the elevator motors power
hydraulics intermittently so variable speed is not required.
Motor replacements with premium efficiency versions: insufficient operating hours
on the 3 large motors (RTU-7 and two elevator hydraulic motors) to justify replacement
with premium efficiency, now and at EOL.
Appendix D-4: Replace Exhaust Fans with Air Scrubbers in apparatus bay
When a truck breaks the optical beam (entering or exiting) at any OH door, exhaust
fans EF-6 and EF-7 turn on for approximately 7 minutes. This exhausts 11,200 CFM of
conditioned air. RTU-7 is interconnected to provide make up air at 11,200 CFM. It is
estimated that a unique entry or exit (there is no difference in operation if more than 1
vehicle enters or exits after the beam has been broken) occurs an average of 12 times
per day, so the air handlers are running for 1.4 hours per day, 365 days/year.
It should be noted that a 7 minute exhaust cycle only results in 31% of an air change
in the apparatus bay; this does not seem adequate, but for without knowing the
concentration of carbon monoxide, it is assumed for calculation purposes that this is
sufficient. This should be verified.
(4) AirHawk 3000XL air scrubbers (see Appendix E) will process 12,000 CFM of inside
air. See table 4 below for a comparison of the annual costs of operating the current
system and the system recommended by this EEM.
Table 4
ANNUAL OPERATING COSTS
Existing System with
EF‐6, EF‐7 and RTU‐7
Proposed EEM using
4 air scrubbers
Electric (fan motors) costs $ 480 $ 183
Cost of NG for sensible
portion of load to heat OSA $ 1,262 $ ‐
Cost of NG for latent portion
of load to heat OSA $ 2,263 $ ‐
TOTALS $ 4,005 $ 183
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 43 of 57
It is recommended to disable or remove EF-6 and EF-7, and modify the controls on
RTU-7 (which is recommended to be repaired, as on-site personnel stated that the
heating portion of this unit is non-functional) to be controlled by a local thermostat in
the apparatus bay, and to only provide heat as needed, not make up air.
The estimated cost to install (4) air scrubbers, similar to those used in Fire Stations 11
and 12, is $31,985 (see quote in Appendix E). The estimated annual savings is $3822,
and the payback is 8.3 years.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 44 of 57
Appendix E – Specifications supporting EEM’s
Lighting Controls
Occupancy sensors sense the presence of occupants, turn the lights on at a pre-
determined level, and then turn the lights off after a programmed time period of no
occupancy. Line of sight, motion sensing occupancy sensors can be installed in
existing duplex switch boxes, as well as on ceilings. Dual technology sensors are
typically ceiling mounted in rooms, lavatories, corridors, vehicle bays and storage areas
where obstacles may interfere with line-of-sight sensors. The second technology in
these sensors activates lighting based on sound or changes in position, and work even
when a person is fully obscured by an obstacle. Zoned occupancy controls are
typically recommended for long corridors, large vehicle bays and large storage areas
with multiple switches and lighting zones. Zoned controls are designed to activate and
de-activate lighting by zone, by row, or even by fixture, based on the location of the
occupant. Occupancy sensors can reduce power consumption by 25-60%. Paybacks
on occupancy sensors range from 1 to 5 years, depending on the light fixture
consumption and occupancy of the room.
Lighting Management Systems (LMS) today have the capability to manage lighting
based on a wide variety of parameters including building usage, daylight conditions and
occupancy. They are retro-fittable, and can be stand alone or integrated into a
building’s HVAC, alarm or other control systems. Additionally, they can be easily re-
configured as a building’s usage or occupancy pattern changes.
Sample LMS systems and a sample high bay occupancy sensor (which could be used
for zone lighting control) follow.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 45 of 57
Appendix E – Lighting Controls
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 46 of 57
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 47 of 57
Appendix E - Occupancy Sensing Thermostat
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 48 of 57
Appendix E – Headbolt Heater controls
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 49 of 57
Appendix E – Air Scrubber Quote
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 50 of 57
Appendix F – Benchmark Data
$0
$2,000
$4,000
$6,000
$8,000
$10,000
$12,000
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Jan‐09Mar‐09May‐09Jul‐09Sep‐09Nov‐09Jan‐10Mar‐10May‐10Jul‐10Sep‐10Nov‐10Natural Gas Cost ($)Natural Gas Consumption (Therms)Date (Mon ‐Yr)
Building Name‐Natural Gas Consumption (Therms) vs. Natural Gas Cost ($)
Natural Gas Consumption (Therms)
Natural Gas Cost ($)
$0
$500
$1,000
$1,500
$2,000
$2,500
$3,000
$3,500
$4,000
$4,500
0
5000
10000
15000
20000
25000
30000
35000
40000
Jan‐09Mar‐09May‐09Jul‐09Sep‐09Nov‐09Jan‐10Mar‐10May‐10Jul‐10Sep‐10Nov‐10Electric Cost ($)Electric Consumption (kWh)Date (Mon ‐Yr)
Building Name‐Electric Consumption (kWh) vs. Electric Cost ($)
Electric Consumption (kWh)
Electric Cost ($)
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 51 of 57
REAL Preliminary Benchmark Data Form
PART I – FACILITY INFORMATION
Facility Owner Facility Owned By Date (mm/dd/yyyy)
MOA Municipal
Government/Subdivision
04/06/12
Building Name/ Identifier Building Usage Building Square Footage
Fire Station #1 & Admin (2 buildings,
combined sq ft)
29,891
Building Type Community Population Year Built
261,000 2000
Facility Address Facility City
Facility Zip
100 & 122 E 4th Ave Anchorage
99517
Contact Person
First Name Last Name Middle Name Email Phone
Mailing Address City State Zip
Primary Operating
Hours
Monday‐
Friday
Saturday Sunday Holidays
Average # of
Occupants During
Operating Hours
Renovations
Date (mm/dd/yyyy) Details
PART II – ENERGY SOURCES
1. 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.
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 52 of 57
Heating Oil Electricity Natural Gas Propane Wood Coal
$ /gallon $ / kWh $ / CCF $ / gal $ / cord $ / ton
Other energy
sources? Describe
NOTES TO AUDITOR:
These are (2) separate bldgs, with (2) NG meters, but site inspection revealed only 1 elec meter, so bldgs are
combined in this benchmark, as are NG usage data.
Fire Station #1 & Admin (2 buildings, combined sq ft)
Buiding Size Input (sf) = 29,891
2009 Natural Gas Consumption (Therms) 60,500.00
2009 Natural Gas Cost ($) 61,785
2009 Electric Consumption (kWh) 347,880
2009 Electric Cost ($) 33,916
2009 Oil Consumption (Therms) 0.00
2009 Oil Cost ($) 0
2009 Propane Consumption (Therms) 0.00
2009 Propane Cost ($) 0.00
2009 Coal Consumption (Therms) 0.00
2009 Coal Cost ($) 0.00
2009 Wood Consumption (Therms) 0.00
2009 Wood Cost ($) 0.00
2009 Thermal Consumption (Therms) 0.00
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 53 of 57
2009 Thermal Cost ($) 0.00
2009 Total Energy Use (kBtu) 7,237,314
2009 Total Energy Cost ($) 95,701
Annual Energy Use Intensity (EUI)
2009 Natural Gas (kBtu/sf) 202.4
2009 Electricity (kBtu/sf) 39.7
2009 Oil (kBtu/sf) 0.0
2009 Propane (kBtu/sf) 0.0
2009 Coal (kBtu/sf) 0.0
2009 Wood (kBtu/sf) 0.0
2009 Thermal (kBtu/sf) 0.0
2009 Energy Utilization Index (kBtu/sf) 242.1
Annual Energy Cost Index (ECI)
2009 Natural Gas Cost Index ($/sf) 2.07
2009 Electric Cost Index ($/sf) 1.13
2009 Oil Cost Index ($/sf) 0.00
2009 Propane Cost Index ($/sf) 0.00
2009 Coal Cost Index ($/sf) 0.00
2009 Wood Cost Index ($/sf) 0.00
2009 Thermal Cost Index ($/sf) 0.00
2009 Energy Cost Index ($/sf) 3.20
2010 Natural Gas Consumption (Therms) 49,121.00
2010 Natural Gas Cost ($) 40,343
2010 Electric Consumption (kWh) 380,880
2010 Electric Cost ($) 39,806
2010 Oil Consumption (Therms) 0.00
2010 Oil Cost ($) 0
2010 Propane Consumption (Therms) 0.00
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 54 of 57
2010 Propane Cost ($) 0
2010 Coal Consumption (Therms) 0.00
2010 Coal Cost ($) 0
2010 Wood Consumption (Therms) 0.00
2010 Wood Cost ($) 0
2010 Thermal Consumption (Therms) 0.00
2010 Thermal Cost ($) 0
2010 Total Energy Use (kBtu) 6,212,043
2010 Total Energy Cost ($) 80,149
Annual Energy Use Intensity (EUI)
2010 Natural Gas (kBtu/sf) 164.3
2010 Electricity (kBtu/sf) 43.5
2010 Oil (kBtu/sf) 0.0
2010 Propane (kBtu/sf) 0.0
2010 Coal (kBtu/sf) 0.0
2010 Wood (kBtu/sf) 0.0
2010 Thermal (kBtu/sf) 0.0
2010 Energy Utilization Index (kBtu/sf) 207.8
Annual Energy Cost Index (ECI)
2010 Natural Gas Cost Index ($/sf) 1.35
2010 Electric Cost Index ($/sf) 1.33
2010 Oil Cost Index ($/sf) 0.00
2010 Propane Cost Index ($/sf) 0.00
2010 Coal Cost Index ($/sf) 0.00
2010 Wood Cost Index ($/sf) 0.00
2010 Thermal Cost Index ($/sf) 0.00
20010 Energy Cost Index ($/sf) 2.68
Note:
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 55 of 57
1 kWh = 3,413 Btu's
1 Therm = 100,000 Btu's
1 CF ≈ 1,000 Btu's
Natural Gas consumption
Btus/CCF =100,000
Month Billing Days Consumption (CCF)
Consumption
(Therms)
Demand
Use
Natural
Gas Cost
($)
Unit Cost
($/Therm)
Demand
Cost ($)
Jan‐09 31 9343 9343
$9,528 $1.02
Feb‐09 32 7016 7016 $7,130 $1.02
Mar‐09 27 6458 6458 $6,567 $1.02
Apr‐09 31 7187 7187 $7,294 $1.01
May‐09 29 5209 5209 $5,305 $1.02
Jun‐09 33 2888 2888 $2,971 $1.03
Jul‐09 30 2521 2521 $2,606 $1.03
Aug‐09 32 2558 2558 $2,642 $1.03
Sep‐09 31 2730 2730 $2,815 $1.03
Oct‐09 31 4245 4245 $4,366 $1.03
Nov‐09 28 4477 4477 $4,579 $1.02
Dec‐09 29 5868 5868 $5,982 $1.02
Jan‐10 34 7395 7395 $6,215 $0.84
Feb‐10 30 7542 7542 $6,334 $0.84
Mar‐10 28 5748 5748 $4,844 $0.84
Apr‐10 33 6398 6398 $5,435 $0.85
May‐10 28 3429 3429 $2,949 $0.86
Jun‐10 29 1335 1335 $1,198 $0.90
Jul‐10 31 1366 1366 $1,223 $0.90
Aug‐10 32 1514 1514 $1,336 $0.88
Sep‐10 30 1410 1410 $1,253 $0.89
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 56 of 57
Oct‐10 32 2445 2445 $2,082 $0.85
Nov‐10 28 4141 4141 $2,227 $0.54
Dec‐10 34 6398 6398 $5,247 $0.82
Jan ‐ 09 to Dec ‐ 09 total: 60,500 60,500 $61,785 $0
Jan ‐ 10 to Dec ‐ 10 total: 49,121 49,121 $40,343 $0
Jan ‐ 09 to Dec ‐ 09 avg: $1.02
Jan ‐ 10 to Dec ‐ 10 avg: $0.83
Electricity Consumption
Btus/kWh = 3,413
Month
Billing
Days
Consumption
(kWh)
Consumption
(Therms)
Demand
Use
Total
Electric
Cost ($)
Unit Cost
($/kWh)
Demand
Cost ($)
Jan‐09 32 35040 1195.9152 $2,862 $0.08 $810.80
Feb‐09 28 25320 864.1716 $2,186 $0.09 $693.90
Mar‐09 30 27240 929.7012 $2,731 $0.10 $713.20
Apr‐09 32 29400 1003.422 $2,877 $0.10 $701.30
May‐09 29 24240 827.3112 $2,480 $0.10 $618.50
Jun‐09 30 28320 966.5616 $2,890 $0.10 $735.50
Jul‐09 33 34920 1191.8196 $3,473 $0.10 $825.60
Aug‐09 29 28440 970.6572 $2,913 $0.10 $750.20
Sep‐09 30 28440 970.6572 $2,894 $0.10 $716.10
Oct‐09 32 30720 1048.4736 $3,148 $0.10 $798.90
Nov‐09 28 26640 909.2232 $2,761 $0.10 $719.10
Dec‐09 30 29160 995.2308 $2,701 $0.09 $702.50
Jan‐10 33 35760 1220.4888 $3,198 $0.09 $759.30
Feb‐10 29 29400 1003.422 $2,724 $0.09 $709.60
Mar‐10 30 28800 982.944 $3,154 $0.11 $651.30
Apr‐10 31 30000 1023.9 $3,261 $0.11 $655.50
May‐10 30 29280 999.3264 $3,460 $0.12 $847.80
Jun‐10 29 27840 950.1792 $2,958 $0.11 $785.70
ENERGY AUDITS OF ALASKA FIRE STATION #1 & ADMINSTRATION BUILDING
May 2, 2012 Page 57 of 57
Jul‐10 33 35520 1212.2976 $3,610 $0.10 $853.80
Aug‐10 28 29640 1011.6132 $3,152 $0.11 $841.90
Sep‐10 30 30480 1040.2824 $3,245 $0.11 $790.10
Oct‐10 33 34920 1191.8196 $3,610 $0.10 $806.40
Nov‐10 29 32280 1101.7164 $3,389 $0.10 $793.10
Dec‐10 33 36960 1261.4448 $4,045 $0.11 $792.05
Jan ‐ 09 to Dec ‐ 09 total: 347880 11873.1444 $33,916 $8,786
Jan ‐ 10 to Dec ‐ 10 total: 380880 12999.4344 $39,806 $9,287
Jan ‐ 09 to Dec ‐ 09 avg: $0.10
Jan ‐ 10 to Dec ‐ 10 avg: $0.10