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1-22 Proposal No, 2669.01 Water Enterprise Alternative Energy Feasibility Study <br />REFERENCES <br />The City of Palm Springs contracted with NAM to provide a third -party peer review of a proposed contract with <br />Chevron Energy Solutions (CES) and provide a review of: <br />• Energy conservation measures <br />• Construction cost estimates <br />• The energy savings associated with these projects <br />• The financial savings resulting from their <br />implementation <br />Additionally, through initial discussions with City Staff and the <br />City Council Subcommittee, specific areas of concern and <br />project needs were noted, including: <br />• The need for the project to address two of the City's <br />ailing cogeneration systems, which were nearing the <br />end of their useful lives <br />• Concerns about the retirement of one of the <br />cogeneration plants <br />PROJECT AT -A -GLANCE <br />Guaranteed savings and costs reviewed: <br />o 3,610,112 kWh saved <br />0 250,409 therms/yr saved' <br />0 144,604 ccf water saved <br />o $790,972Jyrenergy cost savings <br />o $18,060,112 Program Cost <br />Solar PV feasibility Analysis <br />0 12 potential sites <br />0 3 MW generating capacity <br />o $12.7 million estimated construction <br />® Concerns over the realization of energy savings from cost <br />this project, and risk management to protect the • Solar PV Procurement <br />City's financial interests, as a loan was to be obtained o Over 10 proposals received <br />for the work. o Highly competitive pricing with flop <br />notch solar vendors and designs <br />The bundled energy management project proposed to the o Beneficial contract, O&M, and <br />City of Palm Springs by Chevron Energy Solutions guarantee language <br />encompassed a wide range of energy efficiency and <br />generation measures, including lighting, HVAC, water, solar generation, cogeneration and other measures. <br />Newcomb Anderson McCormick's detailed peer review of the proposed scope of work focused in particular on <br />the technologies being proposed with respect to current industry trends and best practices. Facility and <br />equipment information and conditions were also considered to establish the reasonableness of the baseline <br />conditions assumed In the energy calculations. All anomalies or questionable assumptions were noted for <br />follow up, and their potential risks to the savings were assessed. The energy savings calculations and energy <br />models were reviewed to determine compliance with industry accepted practices, reasonableness and <br />congruency with the stated scope of work. The operating parameters, such as hours of operation and HVAC <br />setpoints, were also checked for reasonableness, and modeled energy consumption was compared to utility <br />data where available. <br />Newcomb Anderson McCormick also assessed the proposed design of solar PV systems. We verified forecast <br />production and reviewed the estimate of utility savings as a point of comparison to the proposed financials. <br />NAM also reviewed high-level system designs for robustness, use of sound engineering principles, and quality of <br />key components. <br />CITY OF SANTA ANA Copyright © Newcomb Anderson McCormick 2017 <br />