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Performance <br />Services <br />9. Technical Approach <br />a. Describe to r approach to evaluating feasibility for solar energy projects„ <br />Our method for evaluating project feasibility is through site investigation and Helioscope reports. <br />Helioscope reports predict annual solar energy output (kWh) of the proposed solar PV systems. The <br />assumptions used in generating the predictions are included in the reports. In the reports, we look at <br />losses due to weather, soiling, temperature, attenuation, clouds, snow, irradiance, panel angle, wiring and <br />balance of material. It should be noted that Performance Services has provided evidence on past projects <br />within this proposal (in the References Section) to confirm the accuracy of our past solar generation <br />predictions. Through years of experience and diligent project monitoring, we have developed extensive <br />expertise and confidence in our solar PV generation predictions. Please see below for an example of our <br />assumptions when evaluating project feasibility. <br />Sources of System Loss <br />AC System: 2.0% <br />Inverters:1.5% <br />Clipping: 1.4% <br />Wiring: 0.2% <br />Optimizers: 1.4% <br />Mismatch: 0.2% <br />Temperature: 2.0% <br />Reflection: 3.8% <br />Solling: 3.7% <br />Irradiance: 0.9% <br />Performance Services' approach to equipment selection, specific to solar projects, involves a focus on <br />quality materials that will be dependable for our customers and minimize the probability of performance <br />Confidential & Proprietary Document 9. Technical Approach -1 <br />