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2. 2 CASE STUDY NEW 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 TypeRecreation Center Energy MeasuresLighting, HVAC, envelope, DHW Annual Energy Savings$10,643 Incremental Cost$57,152 Total DCEO Incentives$77,467 Simple Payback5.3 years

3. 3 CASE STUDY NEW 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 TypeK-12 Energy MeasuresLighting, HVAC, envelope Annual Energy Savings$9,061 Incremental Cost$34,137 Total DCEO Incentives$110,336 Simple Payback3.7 years

4. TENNIS COURTS/POOL Indoor Tennis and Pool Building TypePark District Energy MeasuresLighting, HVAC, DHW, plug loads Annual Energy Savings$27,941 Total DCEO Incentives$60,000 Total Project Cost$55,000 (after incentives) Payback1.9 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

5. 5 MULTIPLE RETROFITS Civic Center Building TypeMunicipal Civic Center Energy MeasuresLighting, 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 Payback0 years Funding… DCEO Illinois Energy Now Conservation Block Grant from American Recovery and Reinvestment Act Fully funded

6. ELEMENTARY SCHOOL Elementary School Building TypeK-5 School Energy MeasuresHVAC, lighting, windows, occ sensors, controls Annual Energy Savings$16,933 Total DCEO Incentives$29,800 Total Project Cost$138,801 Payback6.4 years What they did… Replaced existing boiler and chiller New windows Retrofit lighting Occupancy sensors Air sealing

7. ELEMENTARY SCHOOL What they did… New Geothermal New windows Retrofit lighting Occupancy sensors Air sealing (not completed yet) Elementary School Building TypeK-5 School Energy MeasuresHVAC, lighting, windows, occ sensors, controls Total Project Cost$618,501 Total DCEO Incentives$35,393 Final Project Cost$583,108 Annual Energy Savings$19,587 Payback29 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

8. ARENA Arena Building TypeRecreation Energy MeasuresLighting, hot water, VFDs, heat recovery, RCx Annual Energy Savings$106,132 Total DCEO Incentives$131,000 Total Project Cost$150,366 Payback1.4 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

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