Community Resource

CommitteeReport to City Council

January 15, 2015

Memorial Park Energy Project

• 6 City buildingsCity HallYMCA GymYMCA Fitness CenterYMCA Old School ClassroomOld School CafeteriaFire Department Admin

• LibraryNot included in this report

Background• Grants from Georgia Environmental Facilities

Authority (GEFA) plans for upgrades/retrofits, geothermal, wind,

solar• Savings to Energy Efficiency and Renewable Energy

Revolving Loan Fund for upgrades and renewables until buildings are carbon-neutral/zero consumption baseline is 2008 energy use

• Then, savings to Tybee Energy Loan Fund and the Property Assessed Clean Energy Financing Program

Timeline

• 2010 (Jul/Aug) retrofit buildings: insulation, thermostats, lighting install ground loop for geothermal system develop best practices (City Green Team)

• 2012 (Jun) hook City Hall into geothermal system

• 2014 (Aug) correct City Hall geothermal controls

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

2008 13265 11814 9574 9150 12459 15374 16159 14884 12439 10739 12510 11951

2010 16455 14127 11048 7918 11830 16317 16267 13996 12170 8460 9661 10590

2011 9291 8399 7789 7997 8267 9656 11163 11649 8952 6677 5733 7193

2012 5040 5858 5760 6578 7738 9385 10172 9862 9483 7252 6234 7064

2013 6464 6439 7339 6608 7384 9430 9246 9482 9403 7403 6762 6733

2014 7319 6903 6404 6412 7861 8456 8921 9403 7679 6693 5606 4796

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17000

City Hall Energy Use History (account 63044-62008, rate PLS-C)

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watt

Hou

rs C

onsu

med

2014 geothermalcorrection

2008 baseline

2010 retrofits

2012 geothermal

Geothermal only decreased usage in summer months; correction in Aug. 2014Zoning issues still remain; space heating? move meetings and AV equipment?

JUN JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY

2011-12 9656 11163 11649 8952 6677 5733 7193 5040 5858 5760 6578 7738

2012-13 9385 10172 9862 9483 7252 6234 7064 6464 6439 7339 6608 7384

2013-14 9430 9246 9482 9403 7403 6762 6733 7319 6903 6404 6412 7861

2014-15 8456 8921 9403 7679 6693 5606 4786 NaN NaN NaN NaN NaN

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5500

6500

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12500

City Hall Energy Use June-May since 2011Ki

low

att H

ours

Con

sum

ed

“baseline” after 2010 retrofits

geothermal hook up

geothermalcorrection

City Hall-Yearly Totals

• 2014: 42% reduction compared to 2008• Total savings in 5 years: $32,952

kWh from Georgia Power; savings calculated by City Finance Department; CO2 equivalent from EPA http://www.epa.gov/cleanenergy/energy-resources/calculator.html

2008 2010 2011 2012 2013 2014

Total kWh 150318 148839 102766 90426 92693 86453

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150000

Kilo

watt

Hou

rs 2014 bill total: $12,182 CO2: 59.6 metric tons

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

2008 14920 13320 8040 7880 17360 23280 24520 23000 17800 12560 13440 13560

2010 17480 17120 10320 7400 14960 21160 24880 20720 17320 8640 7640 21120

2011 18080 12160 7800 9360 10880 15920 19200 16400 11480 6280 5400 9560

2012 5960 6160 5480 7080 8760 12800 16880 13000 11640 7120 6760 7320

2013 6600 7800 8360 7680 9760 15840 16960 17480 16160 9080 7840 7840

2014 12960 10280 7920 7680 12840 15320 16660 17560 13120 10960 8800 8880

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16500

21500

26500

YMCA-Old School-Cafe Energy Use History (account 38680-13015, rate PLM-C)

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onsu

med

YMCA-Old School-Cafe-Yearly Totals

• 2014: 25% reduction from 2008• Total savings in 5 years: $33,589

2008 2010 2011 2012 2013 2014

Total kWh 189680 188760 142520 108960 131400 142980

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Note: 3 buildings,different uses

2014 bill total: $19,827 CO2: 98.2 metric tons

kWh from Georgia Power; savings calculated by City Finance Department; CO2 equivalent from EPA http://www.epa.gov/cleanenergy/energy-resources/calculator.html

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

2008 15440 11200 5360 8640 14560 18400 19080 16120 13720 10920 17160 15360

2010 17600 22240 12760 5280 12400 16360 14040 13280 10040 3840 5080 31360

2011 25520 13480 10960 9120 10400 16040 23200 18880 12520 6640 6520 10840

2012 7880 8520 4760 8000 11800 15960 22880 23840 19960 9480 8480 11240

2013 10720 12040 13760 6880 11160 21600 19880 17120 13040 5880 7240 9640

2014 17120 13600 10760 5600 8480 14040 16560 15760 9320 5880 9360 12200

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9500

14500

19500

24500

29500

Gym Energy Use History (account 04413-70010, rate PML-C)

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watt

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onsu

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Gym-Yearly Totals

• 2014: 16% reduction from 2008• Total savings in 5 years: $11,825

2008 2010 2011 2012 2013 2014

Total kWh 165960 164280 164120 152800 148960 138680

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2014 bill total: $21,070CO2: 95.6 metric tons

kWh from Georgia Power; savings calculated by City Finance Department; CO2 equivalent from EPA http://www.epa.gov/cleanenergy/energy-resources/calculator.html

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

2008 2971 1305 772 971 1559 2662 2952 2633 1614 1456 940 2119

2010 4247 2353 1210 1132 2361 3065 4066 3858 3376 2019 1514 2605

2011 2200 1609 1259 2574 3344 4390 5254 4624 3549 2270 1687 1991

2012 1522 902 821 1126 1970 2327 2768 2455 2085 1163 813 1006

2013 847 866 1033 983 1740 2636 2897 3014 2579 1376 1018 958

2014 1581 1357 1157 1366 2336 2751 3079 3206 2235 1592 1205 1194

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Fire Dept Admin-Energy Use History (account 58634-62001, rate PLS-C)

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l Kw

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Fire Dept Admin-Yearly Totals

• 2014: 5% increase from 2008• Total savings in 5 years: -$2,564

2008 2010 2011 2012 2013 2014

Total kWh 21954 31806 34751 18958 19947 23059

2500

7500

12500

17500

22500

27500

32500

37500

Kilo

watt

Hou

rs 2014 bill total: $4,036CO2: 15.9 metric tons

kWh from Georgia Power; savings calculated by City Finance Department; CO2 equivalent from EPA http://www.epa.gov/cleanenergy/energy-resources/calculator.html

Summary-All Buildings26% reduction in kWh94 metric tons less CO2

(2008 vs. 2014)

$75,802 cumulative savings(through 2014)

kWh from Georgia Power; savings calculated by City Finance Department; CO2 equivalent from EPA http://www.epa.gov/cleanenergy/energy-resources/calculator.html

2008 2010 2011 2012 2013 2014

kWh Totals

527912 533685 444157 371144 393000 391072

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550000

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l Kilo

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TOTAL SAVINGS THRU 2014

2010 2011 2012 2013 2014 TOTALS

CITY HALL $344.07 $6,983.05 $8,623.80 7928.74 $9,072.86 $32,952.53

GYM $884.17 $940.59 $2,856.06 $2,726.56 $4,417.24 $11,824.62

OLD SCHOOL $86.00 $6,847.78 $11,876.11 8394.50 $6,385.02 $33,589.42

FD ADMIN -$1,497.65 -$1,859.40 $547.12 421.35 -$175.14 -$2,563.71

$75,802.85

Lessons Learned

• Energy efficiency measures can work!• Monitoring and maintenance is vital.• Projects need independent oversight to

ensure proper installation, functioning, and maintenance.

• Consider commissioning energy management or issuing performance contracts for large projects.

Next Steps

City HallRenovation/rezoningGeothermal monitoring

YMCA Gym2 new heat pumpsSpray foam insulation in

roof?Additional fixes/retrofits?

YMCA-Old School-Cafe ComplexMonitor separate

buildings?Fire Dept. Admin

Review best practicesContinue monitoring

Energy monitoring/dashboard?Solar?

CITY HALL22%

GYM35%

OLD SCHOOL37%

FD ADMIN6%

2014 Energy Use

Thank You!Reduce, Reuse, Recycle