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CASE STUDIES
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CASE STUDYNEW CONSTRUCTION PUBLIC SECTOR
Case study by SEDAC
What they got…
▪ Prescriptive Incentive for individual measures.
▪ They did not model the building due to costs constraints
What they did…New 39,115 recreation center▪ Increased roof and wall R-values▪ Reduce lighting power density by
almost .3 W/sf▪ High Efficiency GSHP
Park District
Building Type Recreation Center
Energy Measures Lighting, HVAC, envelope, DHW
Annual Energy Savings $10,643
Incremental Cost $57,152
Total DCEO Incentives $77,467
Simple Payback 5.3 years
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CASE STUDYNEW CONSTRUCTION PUBLIC SECTOR
Case study by SEDAC
What they got…
▪ Incentive for 18% beyond code
What they did…147,867 sf addition and renovation▪ Improved lighting▪ Improved envelope▪ High Efficiency HVAC
High School
Building Type K-12
Energy Measures Lighting, HVAC, envelope
Annual Energy Savings $9,061
Incremental Cost $34,137
Total DCEO Incentives $110,336
Simple Payback 3.7 years
TENNIS COURTS/POOL
Indoor Tennis and Pool
Building Type Park DistrictEnergy Measures Lighting, HVAC, DHW,
plug loadsAnnual Energy Savings $27,941Total DCEO Incentives $60,000Total Project Cost $55,000 (after incentives)Payback 1.9 years
Recommended…• Lighting upgrade
– MH to high bay– Exterior LEDs– Reduce linear wattage
• Install VSDs on pool pumps• Vending misers• Thermostat setbacks
Recommended buy not included in savings…• Install pool covers• Pool dehumidification / heat recovery• Daylighting controls• Ozone laundry
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MULTIPLE RETROFITSCivic Center
Building Type Municipal Civic Center
Energy Measures Lighting, Occupancy Sensors, Boiler Pump Controls, Chiller Water Pump, Sequencing
Total Project Cost $308,550
EECB Grant $283,054
Total DCEO Incentives $25,496
Final Project Cost $0
Annual Energy Savings $60,000
Payback 0 years
Funding…• DCEO Illinois Energy Now• Conservation Block Grant from
American Recovery and Reinvestment Act
• Fully funded
ELEMENTARY SCHOOL
Elementary School
Building Type K-5 SchoolEnergy Measures HVAC, lighting, windows, occ
sensors, controlsAnnual Energy Savings $16,933Total DCEO Incentives $29,800Total Project Cost $138,801Payback 6.4 years
What they did…• Replaced
existing boiler and chiller
• New windows• Retrofit lighting• Occupancy
sensors• Air sealing
ELEMENTARY SCHOOLWhat they did…• New Geothermal• New windows• Retrofit lighting• Occupancy sensors• Air sealing (not
completed yet)
Elementary School
Building Type K-5 SchoolEnergy Measures HVAC, lighting, windows, occ
sensors, controlsTotal Project Cost $618,501Total DCEO Incentives $35,393Final Project Cost $583,108Annual Energy Savings $19,587Payback 29 years
Why high payback was acceptable.• Previously heated with boiler and
unit ventilators• Boiler needed to be replaced• They wanted air conditioning• Windows at end of life
ARENA
Arena
Building Type RecreationEnergy Measures Lighting, hot water, VFDs,
heat recovery, RCxAnnual Energy Savings $106,132Total DCEO Incentives $131,000Total Project Cost $150,366Payback 1.4 years
Recommended…• Lighting
– Metal halide to high bay– Bi-level lighting– Retrofit T12s
• LED exit signs• High efficiency boiler• VFD on water pumps
and cooling tower• Waste heat recover on
ice refrigeration process• Retro-commission
• Incentive funding is available for most any energy efficiency project• Illinois Energy Now services are free!• Structures are in place to help you learn cost effective strategies
for implementation• There are many examples of other owners who have taken
advantage of these programs.• Get your buildings involved in these programs!
▪ Energy Assessments▪ New Construction Design Assistance▪ Retro-Commissioning
Apply to an Illinois Energy Now program today!
www.SEDAC.org1-800-214-7954
SUMMARY
Illinois Energy Now | 1-800-214-7954 www.ILenergynow.org
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