Opening of Proposals - RFQ VPA Energy Savings Contract - Ameresco - Part 3

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ECM M&V Method Calibration (per NIST standards) within the past 12 months of performing the measurements. Where applicable, the measurements will be performed at a wall switch. If it Is not possible to isolate the fixtures on one switch then measurements will be performed at the individual fixture. 5. How will the measurements be used to determine actual savings: The pre and post field measurements (watts) will be inserted in the original calculation spreadsheet to determine the actual savings. 6. How often will measurements be performed: Pre -retrofit power measurements Will be taken once immediately before work begins. After installation, the post - retrofit power measurements will be taken once to determine actual savings for the first year. 7. Stipulated values used: Burn hours of the fixtures are stipulated as presented in the lighting calculation spreadsheets included in the savings calculation section of the contract. These values were determined through discussions with the Customer and are agreed to by all parties. Summary: Wattages, determined as previously described, operating hours, as set forth in In the energy calculation section and the savings calculations, as set forth in the energy calculation section, shall be used to determine savings for the entire guarantee period. Agreed Upon savings are recommended and shall be utilized for this ECM. The savings amount relative to the cost of M&V activities does not justify traditional measurement and verification techniques. Ameresco will perform verification that the ECM 2: controls are functioning properly and are capable of operating the equipment as Controls designed. This process includes a process of collecting data on the equipment and verifying that the savings are being achieved The stipulated assumptions and savings calculations are documented in the calculations portion of the contract, and upon ro ect completion will be used to document the achieved savings. ECM 3: Agreed Upon savings are recommended and shall be utilized for this ECM. The Mechanical savings amount relative to the cost of M&V activities does not justify other methods. Upgrades 1. Measurement and Verification Method: The method for verification of savings associated with this ECM is based on IPMVP Option A. 2. What will be measured: Flow rates, on a sample of single fixtures, shall be measured on fixtures with a population of 20 or more. 3. Sample size to be measured: Measurements shall be taken of a representative sample, the size of which shall not exceed 5% of the population, for unique retrofit types which have a total population of 10 or more. Measurements may not be taken at smaller facilities where the costs associated with such measurements will exceed the savings anticipated for the facility. Measurements taken at other facilities for the ECM 4: same type of fixture will be used for those calculations. For retrofits with less than Water this population the manufacturer's published flow rates for each fixture type as Conservatio referenced in the energy calculation section of the contract shall be used. n 4. How will measurements be made: Water flow (gallons per minute) measurements will be performed with a calibrated bag and stopwatch or a flow meter. 5. How will the measurements be used to determine actual savings: The pre and post field measurements will be inserted in the original calculation spreadsheet to determine the actual savings. 6. How often will measurements be performed: Pre -retrofit flow measurements will be taken once immediately before work begins, After installation, the post -retrofit flow measurements will be taken once to determine actual savings for the first year. 7. Stipulated values used: Number of flushes, minutes of flow, uses per day and other usage related variables are stipulated as presented in the water savings calculation spreadsheets included in the savings calculation section of the contract. Confidential & Proprietary Information of Ameresco, Inc. Page 52