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24 Job No. 2669.01 Water Systems Alternative Energy Feasibility Study <br />West <br />V349N-017847 <br />SCE <br />TOU-8-1) <br />TOU-8-E <br />230 <br />$2.75 <br />East <br />V345R-006147 <br />SCE <br />TOU-PA-3-E <br />TOU-PA-3-E <br />220 <br />$2.75 <br />Cambridge <br />V345N-001335 <br />SCE <br />TOU-PA-3- <br />D <br />TOU-PA-3-D <br />100 <br />$3.00 <br />City Yard <br />V349N-014832 <br />SCE <br />TOU-GS-3- <br />D <br />TOU-GS-3-D <br />523 <br />$3.25 <br />These designs were simulated using HelioScope, and industry standard PV simulation program. This program <br />uses a local weather data file and calculates the hourly performance of the system based on the angle of <br />insolation, the air temperature, the wind speed, the intensity of clouds, and so on. The hourly PV output is <br />subtracted from the hourly electric load profile data from SCE to determine the hourly energy use with PV in <br />place. The electric bill is calculated based on how these kWh fall into the On -Peak, Part -Peak, and other bins to <br />calculate 12 monthly bills for the site with and without solar. <br />Site <br />Garthe <br />Generation <br />894,325 <br />11101iN <br />1,789 <br />South <br />75,170 <br />1,708 <br />West <br />422,617 <br />1,837 <br />East <br />393,985 <br />1,791 <br />Cambridge <br />184,480 <br />1,845 <br />City Yard <br />869,805 <br />1,664 <br />The annual bill savings are included with the system capital cost to evaluate the lifecycle vale of the project and <br />its energy savings. The parameters included in this analysis are listed in the Appendices. The following table <br />summarizes the outcomes of the financial evaluation. <br />Garthe Station <br />Total Installed Cost <br />($1,404,000) <br />Year -1 Energy <br />Cost Savings <br />$38,165 <br />25 -year <br />Net -Benefit <br />($148,834) <br />South Station <br />($194,832) <br />$3,492 <br />($77,488) <br />West Station <br />($707,940) <br />$39,780 <br />$635,398 <br />East Station <br />($677,160) <br />$19,080 <br />($43,018) <br />Cambridge Station <br />($334,800) <br />$8,332 <br />($67,435) <br />City Yard <br />($1,890,767) <br />$46,325 <br />($298,129) <br />Total <br />($5,209,499) <br />$155,174 <br />$494 <br />The sum of all the solar projects has a positive net -benefit over 25 years. However, it is only the Garthe Station <br />and the West Station that have positive net -benefits as.individual sites. Further, it is only the West Station that <br />has a significantly positive net -benefit. <br />The following figures show the preliminary solar layouts at each site, with some initial commentary on some of <br />the challenges that might arise with each design. <br />CITY OF SANTA ANA 19H-32 Newcomb i Anderson I McCormick <br />