Opening of Qualifications - SBFD & MLK GESC Proj No 125-008 - Ameresco Inc

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AMERESCO Energy Solutions m For Every Need Baseline Energy Consumption I Methodology Ameresco was provided with the annual kWh consumption of the Central Fire Station of 465,024kWh. Ameresco was able to use this as a baseline and compare the proposed solar production with this baseline to ensure energy was not being overproduced. With the renovation of the MLK Dream Center, historic electricity usage information is not available. Upon selection, Ameresco will work with the City to determine the electricity usage that was expected from the new building and how the electrical service was sized to accommodate it to confirm that the system size is appropriate. Annual Savings I Methodology Savings are calculated in a variety of ways depending on the nature of the ECM, the available data, and the customer's goals. This includes the use of modeling software such as Helioscope or eQuest; excel spreadsheet calculations; historical data; etc. HVAC and lighting system savings are usually calculated with spreadsheet calculations where the change can be isolated and the system can be analyzed somewhat independently. The inputs into the calculations are based on existing and proposed equipment information, facility trends, and operating conditions that have been reviewed with the City. Based on the method of calculating and the potential for variation in savings, Ameresco will provide a percentage of the savings that will be guaranteed. The City is likely to see higher savings than the guaranteed amount. To provide a framework for transparently, reliably, and consistently determining savings in a manner that enables independent verification, international Measurement & Verification (M&V) guidelines have been established. Ameresco utilizes both the International Performance Measurement and Verification Protocol (IPMVP) and U.S. Department of Energy - Federal Energy Management Program (FEMP) M&V Guidelines Version 4.0 when defining the M&V methodology. Both IPMVP and FEMP serve as a framework in determining energy savings resulting from the implementation of efficiency measures. Four M&V Options are defined in the guidelines. Due to the nature of solar projects, Option B, a retrofit isolation option, is recommended. Individual M&V plans will be created for any additional measures that are included. Solar PV systems were modeled with Helioscope to determine the solar production during a typical weather year based on system configuration and external factors such as shading or soiling from snow or dust. The modeling indicates an energy production in year 1 of 132,901 kWh at the Central Fire Station and 146,524kWh at the MLK Dream Center from the proposed solar PV arrays. Ameresco will guarantee 85% of those savings with a 0.6% annual degradation factor. The City will likely see higher production from the reflection from the new roofs being installed. Savings Adjustments I Equipment and Operational Changes During project development, Ameresco spends time working with our customers to assess their needs and understand how their facilities are operating. Through this effort, operational parameters such as occupancy levels, equipment settings, operating hours, etc. can be used to develop an accurate understanding of how energy is consumed in the facility. Some typical situations that can impact the energy savings estimates include renovations/additions to the facility; a new energy load on an existing utility or HVAC service; renovations/modifications of facilities on an existing utility or HVAC service; abandonment of a portion of the facility on an existing utility or HVAC service; and changes in building usage, occupancy hours, calendar, or set points. With a solar array, the adjustments are generally limited to solar insolation and availability conditions. A linear regression will be created between the solar insolation and kWh production of the system. If actual monthly insolation is lower than the expected monthly insolation for the given calendar month, the linear regression formula will be utilized to determine the amount of production lost due to lower insolation conditions. If the site availability falls below 95% due to factors outside of Ameresco's control, including if the City chooses to take the system offline, an adjustment will be made to account for lost production for the downtime. The adjustment methodology will depend on the nature of the cause of the downtime, and this process will be documented as reported in the M&V Report. While not a part of M&V, as energy usage increases at the facility from increased pumping, the financial return to the City will also increase as the energy produced City of South Bend, IN I Department of Public Works I RFQ Guaranteed Energy Savings Contract SBCFS & MLK Center 1 13