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EXHIBIT G - INDIAN RIVER COUNTY PHASE 2 TECHNICAL ENERGY AUDIT 'ttx� BY FPL ENERGY SERVICES., INC. NOVEMBER 2009 Solar Hot Water A solar hot water (HW) analysis was performed to determine if a solar HW system would be cost effective to supplement the existing LP boiler system for boiler C at the jail. The modeling process consisted of determining the average gallons per day of hot water used, based on monitoring of the hot water usage that was conducted between 6/2/09 to 6/8/09, and determining a load 24 hour load profile (refer to Appendix N and the table below). Table 1 - Hot Water Profile Weekday • • Profile Daily Profile Hourof Hot Water Hot Water Hot Water Day Gallons Used (0/6 of Gallons • . • . • . of Total) of l) Total) 0:00 85.2 23.3% 88.8 25.6%86.6 24.2% 1:00 76.4 20.9% 87.2 25.2% 80.7 22.6% 2:00 73.9 20.2% 79.8 23.1% 76.2 21.3% 3:00 72.4 19.8% 78.6 22.7% 74.9 20.9% 4:00 77.4 21.2% 81.2 23.5% 78.9 22.1% 5:00 86.3 23.6% 81.2 23.5% 84.3 23.6% 6:00 98.1 26.9% 86.2 24.9% 93.4 26.1% 7:00 139.4 38.2% 110.1 31.8% 127.7 35.7% 8:00 159.1 43.5% 108.0 31.2% 138.6 38.8% 9:00 253.7 69.4% 160.9 46.5% 216.6 60.6% 10:00 365.3 100.0% 346.1 100.0% 357.6 100.0%. 11:00 332.3 91.0% 277.0 80.0% 310.2 86.7% 12:00- 241.8 66.2% 179.6 51.9% 216.9 60.7% 13:00 182.3 49.9% 133.6 38.6% 162.8 45.5% 14:00 193.4 52.9% 175.4 50.7% 186.2 52.1% 15:00 293.8 80.4% 179.4 51.8% 248.0 69.4% 16:00 171.9 47.1% 109.7 31.7% 147.1 41.1% 17:00 103.6 28.4% 85.3 24.6% 96.3 26.9% 18:00 117.0 32.0% 120.7 34.9% 118.5 33.1% 19:00 307.9 84.3% 333.8 96.4% 318.3 89.0% 20:00 342.6 93.8% 284.3 82.1% 319.3 89.3% 21:00 249.6 68.3% 186.0 53.7% 224.2 62.7% 22:00 254.1 69.6% 211.5 61.1% 237.0 66.3% 23:00 118.3 32.4% 119.2 34.4% 118.7 33.2% Total :0 N/A 3703.70 N/A 4118.96 N/A Once the profile was determined, the hourly energy usage for the hot water recovery was determined based on the nameplate data of the boiler (Precision model FPW-39L- Proprietary& Confidential 1 Modeling FPL.