1. School Measure Proposals for Small and Rural Utilities

2. 2 Today’s Meeting Project recap Measure proposals –Proposal –Discussion

3. 3 Project Recap Research –OR Cool Schools audit DB –MT & ID audit reports Selected measures –Frequency –Savings potential –Cost effectiveness Drafted proposals Measure Proposal 1.Specification 2.Prelim. description of savings estimation procedure 3.Estimate of total achievable regional savings potential 4.Estimates of EUL and cost 5.Category: Planning, Small Saver, Provisional, Operative Measure Proposal 1.Specification 2.Prelim. description of savings estimation procedure 3.Estimate of total achievable regional savings potential 4.Estimates of EUL and cost 5.Category: Planning, Small Saver, Provisional, Operative

4. 4 Proposed Measure List 1.Interior lighting 2.Exterior lighting 3.Weatherization 4.Programmable thermostat 5.Demand control ventilation 6.Domestic hot water pump 7.Faucet aerator 8.Vending machine controller

5. Lighting 1.Interior 2.Exterior

6. 6 Interior lighting IdentifiersBase caseEfficient case 1. Retrofit standard 4 ft, T8 lamp to low wattage T8 lamp 4-ft, 32-watt T8 lamp4-ft, 28-watt T8 lamp 2. Delamp 3-lamp 4ft, T-8 fixture 3-lamp 4-ft T-8 lighting fixture, 90 W fixture 2-lamp 4-ft T-8 lighting fixture,55 W fixture 3. Delamp 3-lamp 4ft, T-12 fixture 3-lamp 4-ft T-12 lighting fixture, 130 W fixture 2-lamp 4-ft T-8 lighting fixture, 55 W 4. Delamp 4-lamp 4ft, T-8 fixture 4-lamp 4-ft T-8 lighting fixture, 114 W fixture 3-lamp 4-ft T-8 lighting fixture, 81 W fixture 5. Delamp 4-lamp 4ft, T-12 fixture 4-lamp 4-ft T-12 lighting fixture, 164 W fixture 3-lamp 4-ft T-8 lighting fixture, 81 W fixture 6. High efficiency indoor lighting fixture Lamp power bins: >400W, =400W, 176W-399W, 101W-175W, <=100W Lamp power bins: <=600W, <=244W, <=192W, <=128W, <=64W

7. 7 Interior lighting (cont.) Estimated regional potential 19,000,000 – 28,000,000 kWh UES estimation procedure Calibrated Engineering Model The difference in baseline and efficient case Lamp Wattage is multiplied by the Operating Hours. The Lighting Savings is then multiplied by the Interactive Heating Factor. Input parametersConstant: Operating Hours; Interactive Heating Factor Adjustment factor: Lamp or Fixture Power Model calibrationMaintain consistency with lighting calculator UES components1. Lighting savings 2. Interactive heating savings Cost$12/lamp, $32/fixture (delamp), $100 - $250/fixture (new fixtures) EUL15 year

8. 8 Exterior lighting IdentifiersBase caseEfficient case 1. Efficient pole/arm- mounted fixture with photocell Outdoor pole/arm-mounted HID or incandescent fixture. Lamp power bins: <=175W HID 176W - 250W HID 251W - 400W HID > 400 W Outdoor pole/arm-mounted efficient fixture - pulse-start metal halide or LED – with photocell. Lamp power bins: 33W 108W 225W 360W 2. Efficient wall/ceiling- mounted area fixture with photocell Outdoor wall/ceiling- mounted area HID or incandescent fixture. Lamp power bins: <=175W HID 176W - 250W HID 251W - 400W HID > 400W Outdoor wall/ceiling- mounted efficient fixture - pulse-start metal halide or LED – with photocell. Lamp power bins: 33W 108W 225W 360W

9. 9 Exterior lighting (cont.) Estimated regional potential 1,400,000 – 2,100,000 kWh UES estimation procedure Calibrated Engineering Model The product of efficient case Fixture Power and efficient case Operating Hours is subtracted from the product of base case Fixture Power and base case Operating Hours. Input parametersAdjustment factors: Fixture Power and Operating Hours Model calibrationCalibrate baseline Operating Hours to audit result or survey UES components1. Lighting savings Cost$200 (PsMH) - $1000 (LED) per fixture EUL12 year

10. Whole building 1. Weatherization 2. Programmable thermostat 3. Demand control ventilation 4. Domestic hot water pump

11. 11 Building simulation approach Create baseline building prototypes: –PNNL’s ASHRAE 90.1 prototype models –Adv. Energy Design Guide: K-12 Schools baseline –Cool Schools audit data –2009 CBSA Public Use Data Climate zones: ASHRAE 4C, 5B or 6B Calibrate baseline prototypes to billed usage Simulate baseline and measure cases Normalize savings per school floor area

12. 12 Weatherization IdentifiersBase caseEfficient case 1. Increase attic insulation R-15R-38 2. Increase exterior wall insulation R-0, uninsulatedR-14 3. Increase floor insulation R-0, uninsulatedR-30 4. Reduce infiltration 0.75 ACH0.6 ACH

13. 13 Weatherization (cont.) Estimated regional potential 7,000,000 – 10,700,000 kWh UES estimation procedure Calibrated Engineering Model Simulate baseline and efficient scenarios and savings are the difference Input parametersAdjustment factors: Insulation Level and Infiltration Rate Model calibrationCalibrate baseline prototype’s energy use to billed use UES components1. Heating energy savings CostAttic insulation: $0.84 - $1.61/sqft Wall insulation: $0.55 - $0.97/sqft Under floor insulation: $1.37 - $3.91/sqft Weatherstripping: $212.00/opening EUL11 year (weatherstripping) 20 year (insulation)

14. 14 Programmable thermostat IdentifiersBase caseEfficient case 1. Programmable thermostat No setback Occupied & Unoccupied: Heating setpoint: 72 °F Cooling setpoint: 76 °F Setback Occupied (M-F 7am-10pm): Heating setpoint: 72 °F Cooling setpoint: 76 °F Unoccupied: Heating setpoint: 55 °F Cooling setpoint: 85 °F

15. 15 Programmable thermostat (cont.) Estimated regional potential 1,300,000 – 2,000,000 kWh UES estimation procedure Calibrated Engineering Model Simulate baseline and efficient scenarios and savings are the difference Input parametersAdjustment factors: Setpoints and Schedule Model calibrationCalibrate baseline prototype’s energy use to billed use UES components1.Heating energy savings 2.Fan energy savings Cost$175/1000 sq ft controlled EUL11 years

16. 16 Demand Control Ventilation IdentifiersBase caseEfficient case 1. VFD with DCV – Gym with heat pump Constant ventilation rate. Adhere to ASHRAE Standard 62.1 Chapter 6 Section 6.2.1 through 6.2.9 minimum ventilation rates for Multi-use assembly in Education Facilities Ventilation rate varies with space occupancy. Apply methods described in ASHRAE standard 62.1 Section 6.2.6 for designing for varying operating conditions. 2. VFD with DCV – Gym with gas pack Constant ventilation rate.Ventilation rate varies with space occupancy. 3. VFD with DCV – Auditorium with heat pump Constant ventilation rate.Ventilation rate varies with space occupancy. 4. VFD with DCV – Auditorium with gas pack Constant ventilation rate.Ventilation rate varies with space occupancy.

17. 17 Demand Control Ventilation (cont.) Estimated regional potential 1,800,000 – 5,400,000 kWh UES estimation procedure Calibrated Engineering Model Simulate baseline and efficient scenarios and savings are the difference Input parametersAdjustment factors: Supply Fan Speed Model calibrationCalibrate baseline prototype’s energy use to billed use UES components1.Fan energy savings 2.Heating energy savings Cost$310/ton EUL15 yr

18. 18 Domestic Hot Water Pump IdentifiersBase caseEfficient case 1. Install time clock on DHW circulation pump Pump operates 24 hours per day Pump operates M-F, 7am- 10pm Estimated regional potential 400,000 – 600,000 kWh UES estimation procedure Calibrated Engineering Model Simulate baseline and efficient scenarios and savings are the difference Input parametersAdjustment factors: Pump Operating Schedule Model calibrationCalibrate baseline prototype’s energy use to billed use UES components1.Water heating energy savings 2.Pump motor energy savings Cost$225 EUL15 years

19. Other 1.Faucet aerator 2.Vending machine controller

20. 20 Faucet Aerator IdentifiersBase caseEfficient case 1. Low flow faucet aerator 0.75 GPM faucet flow rate0.25 GPM faucet flow rate Estimated regional potential 500,000 – 700,000 kWh UES estimation procedure Calibrated Engineering Model Water heating energy use attributed to faucet flow to be determined at the baseline and efficient Hot Water Use rates. The savings result will be the difference between baseline and efficient case. Input parametersAdjustment Factor: Hot Water Use Model calibrationExpert judgment UES components1. Water heating energy Cost$6.70/faucet EUL9 yr

21. 21 Vending Machine Controller IdentifiersBase caseEfficient case 1. Vending machine controller Refrigerated vending machine without control Refrigerated vending machine with occupancy sensor that shuts off machine after 15min delay Estimated regional potential 1,000,000 – 1,500,000 kWh UES estimation procedure Adopt measured savings values from previous EM&V Input parametersN/A Model calibrationN/A UES components1. Vending machine electricity use Cost$216/vending machine EUL13 years

22. Thank you James Russell, jrussell@peci.orgjrussell@peci.org