HomeMy WebLinkAboutKwethluk Village End Use Energy Efficiency Measures Program Final Report 2010 Village End Use Energy Efficiency Measures Program
AEA Grant # 2195234 Administered by Alaska Building Science Network
Kwethluk Final Report
Community Summary
21 community buildings and 8 teacher housing units received energy efficiency upgrades as follows:
City Offices, Fire Station, Head Start / Inn, Washeteria & Water Plant, Public Safety Building, IRA Office, Health &
Human Services, IRA Boardroom, KTRC Office, Kwethluk Native Store, Old Community Hall, Post Office - Old
Clinic, Social Services Building, Kwethluk Inc. Offices, Kwethluk Inc Warehouse, Kwethluk Inc. Sports Store, Utility
Building, School Gym, Moravian Church, Russian Orthodox Church, Orthodox Quarters
Retrofits Completed: Primary lighting retrofits completed in January, 2009
Village-Wide Lighting Retrofit Summary:
• Retrofitted 303 light fixtures with electronic ballasts & T8 lamps
• Installed 253 compact fluorescent light bulbs
• Installed 8 T5 linear fluorescent fixtures in the School Gym
• Pre-retrofit energy use for all lighting: 61.23 Kilowatts
• Post-retrofit energy use for all lighting: 26.19 Kilowatts
• Energy savings projection: 35.04 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 57%
• Estimated Annual Savings:
kWh Rate (FY 2009 AVE): $0.52 Fuel Cost (FY 2009 Ave): $2.69
Comparative Comparative
Hours Per Day/ 250 Electrical Avoided Diesel Avoided Diesel
Days Per Year Savings Use (gal) Costs
Locally Estimated Use $32,799 5829 $15,681
4 Hours/day $18,223 3238 $8,712
7 Hours/day $31,890 5668 $15,247
10 Hours/day $45,558 8097 $21,781
• Total project cost for all measures: $46,500
• Simple Payback (lighting measures only, using 7 hours/day lighting use run-time): 1.46 Years
• Total village wide in-kind contribution: $ 8,993 (expanded grant capacity by 19%)
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
City Of Kwethluk Owned Buildings
5 buildings owned by the City Of Kwethluk received energy efficient lighting upgrades as follows:
City Offices, Fire Station, Head Start / Inn, Washeteria & Water Plant, Public Safety Building
• Lighting upgrades completed in January, 2009
• Retrofitted 111 light fixtures with electronic ballasts & T8 lamps
• Installed 27 compact fluorescent light bulbs
• Pre-retrofit energy use for all lighting: 18.001 Kilowatts
• Post-retrofit energy use for all lighting: 7.271 Kilowatts
• Energy savings projection: 10.73 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 60%
• Estimated Annual Savings:
Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided
250 Days Per Year Savings Use (gal) Diesel Costs
Locally Estimated $10,464.40 1859.89 $5,003.10
4 Hours/day $5,579.60 991.68 $2,667.62
7 Hours/day $9,764.30 1735.44 $4,668.34
10 Hours/day $13,949.00 2479.21 $6,669.06
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk City Offices - Old Clinic
Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 15 3-lamp electronic ballast, (3) 25 watt T8 lamps 8 4-lamp electronic ballast, (3) 25 watt T8 lamps 4
CFL-14 W 7 CFL-23 W 1
• Pre-retrofit energy use: 4132 watts
• Post-retrofit energy use: 1703 watts
• Energy savings projection: 2429 watts
• Pre-retrofit to post retrofit energy reduction: 59%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $1,263.08 224.49 $603.88
7 Hours/day $2,210.39 392.86 $1,056.79
10 Hours/day $3,157.70 561.23 $1,509.71
1800 Hours/year (Est.) $2,273.54 404.09 $1,086.99
Note: Reduced 4 4-lamp fixtures to 2-lamp fixtures, Reduced 8 4-lamp fixtures to 2-lamp fixtures, De-lamped 4 4-lamp fixtures to
3-lamp fixtures.
Fire Station
Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 2 4-lamp electronic ballast, (4) 32 watt T8 lamps 5 CFL-14 W 2
• Pre-retrofit energy use: 1128 watts
• Post-retrofit energy use: 720 watts
• Energy savings projection: 408 watts
• Pre-retrofit to post retrofit energy reduction: 36%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $212.16 37.71 $101.43
7 Hours/day $371.28 65.99 $177.51
10 Hours/day $530.40 94.27 $253.59
1500 Hours/year (Est.) $318.24 56.56 $152.15
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Head Start / Inn
Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 35 3-lamp electronic ballast, (3) 25 watt T8 lamps 13 CFL-14 W 3
• Pre-retrofit energy use: 7488 watts
• Post-retrofit energy use: 2614 watts
• Energy savings projection: 4874 watts
• Pre-retrofit to post retrofit energy reduction: 65%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs 4 Hours/day $2,534.48 450.46 $1,211.74
7 Hours/day $4,435.34 788.31 $2,120.55
10 Hours/day $6,336.20 1126.16 $3,029.36
1800 Hours/year (Est.) $4,562.06 810.83 $2,181.14
Note: Reduced 13 4-lamp fixtures to 3-lamp fixtures, and 26 4-lamp fixtures to 2-lamp fixtures.
Washeteria & Water Plant
Materials Installed Quantity 2-lamp electronic ballast, (2) 25 watt T8 lamps 15 2-lamp electronic ballast, (2) 32 watt T8 lamps 6 4-lamp electronic ballast, (4) 25 watt T8 lamps 1 4-lamp electronic ballast, (4) 32 watt T8 lamps 7 CFL-14 W 1 CFL-23 W 3
• Pre-retrofit energy use: 4653 watts
• Post-retrofit energy use: 2063 watts
• Energy savings projection: 2590 watts
• Pre-retrofit to post retrofit energy reduction: 56%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $1,346.80 239.37 $643.91 7 Hours/day $2,356.90 418.90 $1,126.84
10 Hours/day $3,367.00 598.43 $1,609.77
2160 Hours/year (Est.) $2,909.09 517.04 $1,390.84
Note: Reduced 15 4-lamp fixtures to 2-lamp fixtures
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Public Safety Building
Materials Installed Quantity
CFL-14 W 7
CFL-23 W 2
CFL-27 W 1
• Pre-retrofit energy use: 600 watts
• Post-retrofit energy use: 171 watts
• Energy savings projection: 429 watts
• Pre-retrofit to post retrofit energy reduction: 72%
• Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $223.08 39.65 $106.66
7 Hours/day $390.39 69.39 $186.65
10 Hours/day $557.70 99.12 $266.64
1800 Hours/year (Est.) $401.54 71.37 $191.98
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
IRA/TC Owned Buildings
8 buildings owned by the IRA/TC received energy efficient lighting upgrades as follows:
IRA Office, Health & Human Services, IRA Boardroom, KTRC Office, Kwethluk Native Store, Old Community Hall,
Post Office - Old Clinic, Social Services Building
• Lighting upgrades completed in
• Retrofitted 126 light fixtures with electronic ballasts & T8 lamps
• Installed 23 compact fluorescent light bulbs
• Pre-retrofit energy use for all lighting: 19.053 Kilowatts
• Post-retrofit energy use for all lighting: 8.401 Kilowatts
• Energy savings projection: 10.652 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 56%
• Estimated Annual Savings:
Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided
250 Days Per Year Savings Use (gal) Diesel Costs
Locally Estimated $12,737.80 2263.93 $6,089.98
4 Hours/day $5,539.04 984.47 $2,648.23
7 Hours/day $9,693.32 1722.83 $4,634.41
10 Hours/day $13,847.60 2461.18 $6,620.58
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Health & Human Services Dept. - Old, Old Clinic
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 14 4-lamp electronic ballast, (3) 25 watt T8 lamps 4 CFL-14 W 3 CFL-27 W 1
• Pre-retrofit energy use: 2088 watts
• Post-retrofit energy use: 1013 watts
• Energy savings projection: 1075 watts
• Pre-retrofit to post retrofit energy reduction: 51%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $559.00 99.35 $267.26
7 Hours/day $978.25 173.87 $467.70
10 Hours/day $1,397.50 248.38 $668.15
1800 Hours/year (Est.) $1,006.20 178.84 $481.07
Note: De-lamped 4 fixtures from 4-Lamp Fixtures to 3-lamp fixtures.
IRA Boardroom
Materials Installed Quantity
CFL-27 W 2
• Pre-retrofit energy use: 200 watts
• Post-retrofit energy use: 54 watts
• Energy savings projection: 146 watts
• Pre-retrofit to post retrofit energy reduction: 73%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $75.92 13.49 $36.30
7 Hours/day $132.86 23.61 $63.52
10 Hours/day $189.80 33.73 $90.74
1500 Hours/year (Est.) $113.88 20.24 $54.45
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
IRA Office
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 5 CFL-27 W 1
• Pre-retrofit energy use: 520 watts
• Post-retrofit energy use: 257 watts
• Energy savings projection: 263 watts
• Pre-retrofit to post retrofit energy reduction: 51%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $136.76 24.31 $65.39
7 Hours/day $239.33 42.54 $114.42
10 Hours/day $341.90 60.77 $163.46
1900 Hours/year (Est.) $259.84 46.18 $124.23
KTRC Office
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 11 4-lamp electronic ballast, (3) 25 watt T8 lamps 1 CFL-20 W 3
• Pre-retrofit energy use: 1275 watts
• Post-retrofit energy use: 641 watts
• Energy savings projection: 634 watts
• Pre-retrofit to post retrofit energy reduction: 50%
• Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $329.68 58.60 $157.62
7 Hours/day $576.94 102.54 $275.84
10 Hours/day $824.20 146.49 $394.05
1900 Hours/year (Est.) $626.39 111.33 $299.48
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk Native Store
Materials Installed Quantity
3-lamp electronic ballast, (2) 25 watt T8 lamps 5 3-lamp electronic ballast, (3) 25 watt T8 lamps 56
• Pre-retrofit energy use: 10248 watts
• Post-retrofit energy use: 4404 watts
• Energy savings projection: 5844 watts
• Pre-retrofit to post retrofit energy reduction: 57%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $3,038.88 540.11 $1,452.90
7 Hours/day $5,318.04 945.19 $2,542.57
10 Hours/day $7,597.20 1350.28 $3,632.25
2808 Hours/year (Est.) $8,533.18 1516.63 $4,079.74
Note: Reduced 5, 4-lamp fixtures to 2-lamp fixtures, and 56, 4-lamp fixtures to 3-lamp fixtures.
Old Community Hall
Materials Installed Quantity
4-lamp electronic ballast, (4) 32 watt T8 lamps 5 CFL-20 W 3 CFL-27 W 1 • Pre-retrofit energy use: 1165 watts
• Post-retrofit energy use: 687 watts
• Energy savings projection: 478 watts
• Pre-retrofit to post retrofit energy reduction: 41%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $248.56 44.18 $118.84
7 Hours/day $434.98 77.31 $207.97
10 Hours/day $621.40 110.44 $297.09
1440 Hours/year (Est.) $357.93 63.62 $171.13
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Post Office - Old Clinic
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 9 CFL-20 W 3
• Pre-retrofit energy use: 981 watts
• Post-retrofit energy use: 474 watts
• Energy savings projection: 507 watts
• Pre-retrofit to post retrofit energy reduction: 52%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $263.64 46.86 $126.05
7 Hours/day $461.37 82.00 $220.58
10 Hours/day $659.10 117.14 $315.12
1600 Hours/year (Est.) $421.82 74.97 $201.68
Social Services Building
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 16 CFL-14 W 1 CFL-20 W 2 CFL-27 W 3
• Pre-retrofit energy use: 2576 watts
• Post-retrofit energy use: 871 watts
• Energy savings projection: 1705 watts
• Pre-retrofit to post retrofit energy reduction: 66%
• Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $886.60 157.58 $423.89
7 Hours/day $1,551.55 275.76 $741.80
10 Hours/day $2,216.50 393.95 $1,059.72
1600 Hours/year (Est.) $1,418.56 252.13 $678.22
Note: Took 8, 2-lamp fixtures off-line.
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk Incorporated Owned Buildings
3 buildings owned by the Kwethluk Incorporated received energy efficient lighting upgrades as follows:
Kwethluk Inc. Offices, Kwethluk Inc Warehouse, Kwethluk Inc. Sports Store
• Lighting upgrades completed in
• Retrofitted 52 light fixtures with electronic ballasts & T8 lamps
• Installed 39 compact fluorescent light bulbs
• Pre-retrofit energy use for all lighting: 6.921 Kilowatts
• Post-retrofit energy use for all lighting: 3.374 Kilowatts
• Energy savings projection: 3.547 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 51%
• Estimated Annual Savings:
Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided
250 Days Per Year Savings Use (gal) Diesel Costs
Locally Estimated $3,662.51 650.95 $1,751.06
4 Hours/day $1,844.44 327.82 $881.83
7 Hours/day $3,227.77 573.68 $1,543.21
10 Hours/day $4,611.10 819.55 $2,204.58
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk Inc. Offices
Materials Installed Quantity
CFL-14 W 14 CFL-20 W 15 CFL-27 W 10
• Pre-retrofit energy use: 2340 watts
• Post-retrofit energy use: 766 watts
• Energy savings projection: 1574 watts
• Pre-retrofit to post retrofit energy reduction: 67%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $818.48 145.47 $391.32
7 Hours/day $1,432.34 254.57 $684.81
10 Hours/day $2,046.20 363.68 $978.29
1920 Hours/year (Est.) $1,571.48 279.30 $751.33
Kwethluk Inc Warehouse
Materials Installed Quantity
8 ft fixture, 2 lamp electronic ballast, (2) 59 watt T8 3
• Pre-retrofit energy use: 465 watts
• Post-retrofit energy use: 354 watts
• Energy savings projection: 111 watts
• Pre-retrofit to post retrofit energy reduction: 24%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $57.72 10.26 $27.60
7 Hours/day $101.01 17.95 $48.29
10 Hours/day $144.30 25.65 $68.99
1000 Hours/year (Est.) $57.72 10.26 $27.60
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk Inc. Sports Store
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 49
• Pre-retrofit energy use: 4116 watts
• Post-retrofit energy use: 2254 watts
• Energy savings projection: 1862 watts
• Pre-retrofit to post retrofit energy reduction: 45%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $968.24 172.09 $462.92
7 Hours/day $1,694.42 301.16 $810.11
10 Hours/day $2,420.60 430.22 $1,157.30
2100 Hours/year (Est.) $2,033.30 361.39 $972.13
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Lower Kuskokwim School District Owned Buildings
2 buildings and 8 teacher housing units owned by the Lower Kuskokwim School District received energy efficient
lighting upgrades as follows: Ket'acik/Aapalluk Memorial School
Utility Building, School Gym, KW09 – Teacher, KW11 – Teacher, KW12 – Teacher, KW13 – Teacher, KW14 –
Teacher, KW18 – Teacher, KW19 – Teacher, KW20 – Teacher, School Gym, Utility Building Totals
• Lighting upgrades completed in
• Retrofitted 4 light fixtures with electronic ballasts & T8 lamps
• Installed 118 compact fluorescent light bulbs
• Installed 8 T5 linear fluorescent fixtures in the Gym
• Pre-retrofit energy use for all lighting: 12.068 Kilowatts
• Post-retrofit energy use for all lighting: 5.278 Kilowatts
• Energy savings projection: 6.79 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 56%
• Estimated Annual Savings:
Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided
250 Days Per Year Savings Use (gal) Diesel Costs
Locally Estimated $4,551.04 808.87 $2,175.87
4 Hours/day $3,530.80 627.54 $1,688.09
7 Hours/day $6,178.90 1098.20 $2,954.15
10 Hours/day $8,827.00 1568.85 $4,220.22
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Utility Building Totals
Materials Installed Quantity
CFL-27 W 6
CFL-40 W 8
• Pre-retrofit energy use: 1400 watts
• Post-retrofit energy use: 482 watts
• Energy savings projection: 918 watts
• Pre-retrofit to post retrofit energy reduction: 66%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $477.36 84.84 $228.23
7 Hours/day $835.38 148.48 $399.40
10 Hours/day $1,193.40 212.11 $570.57
500 Hours/year (Est.) $238.68 42.42 $114.11
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
School Gym
Kwethluk, Ket'acik/Aapalluk Memorial
School Gym
New T5 Fluorescent Lighting, 27 – 30 Ave foot
candles and CRI of 85
Former 400w HID Lighting, 5 - 10 Ave foot
candles and CRI of 30 - 40
Materials Installed Quantity
T5 fixture, electronic ballast, (6) 54 watt T5 HO 8
• Pre-retrofit energy use: 3320 watts
• Post-retrofit energy use: 2736 watts
• Energy savings projection: 584 watts
• Pre-retrofit to post retrofit energy reduction: 18%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $303.68 53.97 $145.19
7 Hours/day $531.44 94.45 $254.08
10 Hours/day $759.20 134.94 $362.98
1750 Hours/year (Est.) $531.44 94.45 $254.08
Note on energy reduction for the Kwethluk School gym:
Generally we see a larger savings percentage pre to post retrofit with our T5 lighting projects. In the
case of the Kwethluk School gym however, the original lighting design for the space provided extremely
low light levels – an average of 5 to 10 existing foot-candles. Bringing light levels up to an acceptable
standard of ~30 foot-candles resulted in reduced but still substantial pre to post savings. We pursued
the measure considering all labor was provided in-kind by the Lower Kuskokwim School District, and due
to the substantial community benefit achieved.
ABSN T5 Lighting plans are designed to increase the average light levels throughout the area when all
fixtures are switched on - in comparison with former existing light output. Existing switching controls are
normally retained - allowing users to choose the appropriate number of light fixtures / rows of light
fixtures needed for various use patterns. In many cases school staff will choose not to use all fixtures
available, thereby achieving more electrical savings than is shown above. Considering light quality,
ABSN T5 lighting plans employ 54-watt, high output T5 lamps with a color-rendering index (CRI) of 85.
Existing light fixtures in rural high ceiling areas typically have a CRI ranging from 30 to 70. With the T5
retrofits, the boost in CRI greatly improves light quality – resulting in objects appearing much closer to
their true color as seen under sunlight. This increased light quality can result in less light needed to
illuminate a given space - for example fewer rows of fixtures selected to light the space.
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Kwethluk - Alaska Building Science Network - T5 Lighting Upgrade Details
These retrofits were completed in (June, 2009).
Gym Length
(feet)
Width
(feet)
Ceiling
Height
(feet)
Type of
Existing
Fixture
# of
Existing
Fixtures
Existing
Fixture
Wattage
Total
Existing
Wattage
Existing
Foot-
candles
New
Foot-
Candles
# of
New
Fixtures
New
fixtures
New
Fixture
Wattage
Total
New
Wattage
Late 70' mid 84 49.5 21 HPS
150 watt 160 0 5 to 10 27-30
T-5
2
lamps
114 0
Color shade
of walls
dirty
white,
off-green
HPS
250 watt 260 0 Mid (of)
58 gym
T-5
3
lamps
171 0
Color shade
of floor yellow
HPS
ballast
551
LU400
400 watt 8 415 3,320
End027,
Mid-End
27
T-5
4
lamps
228 0
Other
School
Gym (A)
0 8
T-5
6
lamps
342 2736
Total Existing Watts 3,320 Total New Watts 2736
Percent Savings Pre to Post Retrofit: 17.59%
Savings & Payback Calculation for Gym: 1750 New watts / old watts
Assume 1750 hrs / year for 250 days/year of use neg 1 (New watts / Old watts x 100 - 100) / 100
Full cost of electricity: $ 0.52 /kWh
Watts of existing lighting: 3,320
New wattage for T5 fixtures: 2,736
Calculation: (Watts) x (hrs/year) / (1000w/kw) x (cost of electricity) = (cost / year)
Existing Cost: $3,021
Retrofitted Cost: $2,490 T5 Materials costs $1,800.00
Annual Savings: $ $531 T5 shipping costs $200.00
Material & shipping cost of Gym retrofit: $ 2,000.00
Simple Payback: Materials cost / annual savings = 3.76 years (for retrofit to pay for itself in materials)
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
KW09 - Teacher Housing
Materials Installed Quantity CFL-14 W 4 CFL-20 W 9 CFL-23 W 8 CFL-27 W 2
• Pre-retrofit energy use: 1825 watts
• Post-retrofit energy use: 474 watts
• Energy savings projection: 1351 watts
• Pre-retrofit to post retrofit energy reduction: 74%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $702.52 124.86 $335.88
7 Hours/day $1,229.41 218.51 $587.78
10 Hours/day $1,756.30 312.15 $839.69
1375 Hours/year (Est.) $965.97 171.68 $461.83
KW11 - Teacher Housing
Materials Installed Quantity CFL-14 W 9 CFL-23 W 1 CFL-27 W 3 CFL-9 W 5
• Pre-retrofit energy use: 1035 watts
• Post-retrofit energy use: 275 watts
• Energy savings projection: 760 watts
• Pre-retrofit to post retrofit energy reduction: 73%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $395.20 70.24 $188.95
7 Hours/day $691.60 122.92 $330.66
10 Hours/day $988.00 175.60 $472.37
1375 Hours/year (Est.) $543.40 96.58 $259.80
KW12 - Teacher Housing
Materials Installed Quantity CFL-14 W 2 CFL-20 W 9 CFL-23 W 6
• Pre-retrofit energy use: 1110 watts
• Post-retrofit energy use: 346 watts
• Energy savings projection: 764 watts
• Pre-retrofit to post retrofit energy reduction: 69%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $397.28 70.61 $189.94
7 Hours/day $695.24 123.57 $332.40
10 Hours/day $993.20 176.52 $474.85
1375 Hours/year (Est.) $546.26 97.09 $261.17
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
KW13 - Teacher Housing
Materials Installed Quantity
CFL-14 W 7 CFL-20 W 1 CFL-23 W 3 CFL-9 W 6
• Pre-retrofit energy use: 915 watts
• Post-retrofit energy use: 241 watts
• Energy savings projection: 674 watts
• Pre-retrofit to post retrofit energy reduction: 74%
• Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $350.48 62.29 $167.57
7 Hours/day $613.34 109.01 $293.24
10 Hours/day $876.20 155.73 $418.91
1375 Hours/year (Est.) $481.91 85.65 $230.40
KW14 - Teacher Housing
Materials Installed Quantity
CFL-14 W 2 CFL-20 W 4 CFL-23 W 4 CFL-9 W 2
• Pre-retrofit energy use: 720 watts
• Post-retrofit energy use: 218 watts
• Energy savings projection: 502 watts
• Pre-retrofit to post retrofit energy reduction: 70%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $261.04 46.40 $124.80
7 Hours/day $456.82 81.19 $218.41
10 Hours/day $652.60 115.99 $312.01
1375 Hours/year (Est.) $358.93 63.79 $171.61
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
KW18 - Teacher Housing
Materials Installed Quantity
CFL-14 W 1 CFL-20 W 2
• Pre-retrofit energy use: 210 watts
• Post-retrofit energy use: 54 watts
• Energy savings projection: 156 watts
• Pre-retrofit to post retrofit energy reduction: 74%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $81.12 14.42 $38.78
7 Hours/day $141.96 25.23 $67.87
10 Hours/day $202.80 36.04 $96.96
1375 Hours/year (Est.) $111.54 19.82 $53.33
KW19 - Teacher Housing
Materials Installed Quantity
CFL-14 W 2 CFL-20 W 9
• Pre-retrofit energy use: 1020 watts
• Post-retrofit energy use: 208 watts
• Energy savings projection: 812 watts
• Pre-retrofit to post retrofit energy reduction: 80%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $422.24 75.05 $201.87
7 Hours/day $738.92 131.33 $353.28
10 Hours/day $1,055.60 187.62 $504.69
1375 Hours/year (Est.) $580.58 103.19 $277.58
KW20 - Teacher Housing
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 4 CFL-20 W 3
• Pre-retrofit energy use: 513 watts
• Post-retrofit energy use: 244 watts
• Energy savings projection: 269 watts
• Pre-retrofit to post retrofit energy reduction: 52%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $139.88 24.86 $66.88
7 Hours/day $244.79 43.51 $117.03
10 Hours/day $349.70 62.15 $167.19
1375 Hours/year (Est.) $192.34 34.18 $91.96
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Church Owned Buildings
3 Community Church Buildings received energy efficient lighting upgrades as follows:
Moravian Church, Russian Orthodox Church, Russian Orthodox Quarters
• Lighting upgrades completed in
• Retrofitted 10 light fixtures with electronic ballasts & T8 lamps
• Installed 46 compact fluorescent light bulbs
• Pre-retrofit energy use for all lighting: 5.196 Kilowatts
• Post-retrofit energy use for all lighting: 1.87 Kilowatts
• Energy savings projection: 3.326 Kilowatts
• Pre-retrofit to post retrofit energy reduction: 64%
• Estimated Annual Savings:
Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided
250 Days Per Year Savings Use (gal) Diesel Costs
Locally Estimated $1,383.62 245.91 $661.51
4 Hours/day $1,729.52 307.39 $826.89
7 Hours/day $3,026.66 537.94 $1,447.06
10 Hours/day $4,323.80 768.48 $2,067.22
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Moravian Church
Materials Installed Quantity CFL-23 W 26 • Pre-retrofit energy use: 2450 watts
• Post-retrofit energy use: 598 watts
• Energy savings projection: 1852 watts
• Pre-retrofit to post retrofit energy reduction: 76%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $963.04 171.16 $460.43
7 Hours/day $1,685.32 299.54 $805.76
10 Hours/day $2,407.60 427.91 $1,151.08
800 Hours/year (Est.) $770.43 136.93 $368.35
Russian Orthodox Church
Materials Installed Quantity 8 ft fixture, 2 lamp electronic ballast, (2) 59 watt T8 6 CFL-14 W 6 CFL-20 W 3 CFL-27 W 4
• Pre-retrofit energy use: 1915 watts
• Post-retrofit energy use: 960 watts
• Energy savings projection: 955 watts
• Pre-retrofit to post retrofit energy reduction: 50%
• Estimated annual savings: Comparative Comparative Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $496.60 88.26 $237.43
7 Hours/day $869.05 154.46 $415.50
10 Hours/day $1,241.50 220.66 $593.57
800 Hours/year (Est.) $397.28 70.61 $189.94
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Alaska Building Science Network – Village End Use Energy Efficiency Program – ’08-’10 Final Report West Region – Kwethluk
Russian Orthodox Living Quarters
Materials Installed Quantity
2-lamp electronic ballast, (2) 25 watt T8 lamps 4
CFL-14 W 2
CFL-20 W 5
• Pre-retrofit energy use: 831 watts
• Post-retrofit energy use: 312 watts
• Energy savings projection: 519 watts
• Pre-retrofit to post retrofit energy reduction: 62%
• Estimated annual savings: Comparative Comparative
Hours Per Day / Electrical Avoided Diesel Avoided Diesel
250 Days Per Year Savings Use (gal) Costs
4 Hours/day $269.88 47.97 $129.03
7 Hours/day $472.29 83.94 $225.80
10 Hours/day $674.70 119.92 $322.58
800 Hours/year (Est.) $215.90 38.37 $103.22