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8 - Project benefit cost ratio detail
Application Backup - AEA Renewable Energy Grant Application Silver Lake Project Percentage Generation kWh's %kWh's %Variance Solomon Gulch 47,500,000 59%47,500,000 59%- Allison Lake - 0%23,200,000 29%23,200,000 Silver Lake - 0%9,296,249 12%9,296,249 Glennallen Diesel Plant (GDP)8,154,620 10%0%(8,154,620) Valdez Diesel Plant (VDP)1,650,229 2%0%(1,650,229) Cogen 22,691,400 28%- 0%(22,691,400) Total Generation 79,996,249 100%79,996,249 100%- Gallons of fuel Budgeted Gallons kWh/gallon Efficiency Projected Gallons Variance GDP Gallons 582,473 14.0 - (582,473) VDP Gallons 120,455 13.7 - (120,455) Cogen Gallons 2,439,935 9.3 - (2,439,935) Total gallons 3,142,863 - (3,142,863) 9,296,249 Silver Lake kWh's 664,018 Divided by 14 kWh's/gallon 2.98$ Assumed price per gallon 1,980,500$ Savings in fuel year 1 Budget 2009 Projected Generation Page 1 of 3 Project Benefit / Cost Ratio Gallons 664,018 Fuel Inflation 3% Assumes no growth A B A-B=C C Year Project Life Cost per gallon of Diesel Fuel Savings 9,296,249 kwh's at 18.1¢Savings Accum Savings Notes 2009 2.65$ 2010 2.73$ 2011 2.81$ 2012 2.90$ 2013 1 2.98$ 1,980,500 1,682,621 297,879 2014 2 3.07$ 2,039,914 1,682,621 357,293 655,172 2015 3 3.16$ 2,101,111 1,682,621 418,490 1,073,662 2016 4 3.26$ 2,164,145 1,682,621 481,524 1,555,186 2017 5 3.36$ 2,229,069 1,682,621 546,448 2,101,634 2018 6 3.46$ 2,295,941 1,682,621 613,320 2,714,954 2019 7 3.56$ 2,364,819 1,682,621 682,198 3,397,152 2020 8 3.67$ 2,435,764 1,682,621 753,143 4,150,295 2021 9 3.78$ 2,508,837 1,682,621 826,216 4,976,511 2022 10 3.89$ 2,584,102 1,682,621 901,481 5,877,992 2023 11 4.01$ 2,661,625 1,682,621 979,004 6,856,996 2024 12 4.13$ 2,741,474 1,682,621 1,058,853 7,915,848 2025 13 4.25$ 2,823,718 1,682,621 1,141,097 9,056,945 2026 14 4.38$ 2,908,430 1,682,621 1,225,808 10,282,754 2027 15 4.51$ 2,995,682 1,682,621 1,313,061 11,595,815 2028 16 4.65$ 3,085,553 1,682,621 1,402,932 12,998,747 2029 17 4.79$ 3,178,119 1,682,621 1,495,498 14,494,245 2030 18 4.93$ 3,273,463 1,682,621 1,590,842 16,085,087 2031 19 5.08$ 3,371,667 1,682,621 1,689,046 17,774,133 2032 20 5.23$ 3,472,817 1,682,621 1,790,196 19,564,329 2033 21 5.39$ 3,577,001 1,682,621 1,894,380 21,458,710 2034 22 5.55$ 3,684,312 1,682,621 2,001,690 23,460,400 2035 23 5.71$ 3,794,841 1,682,621 2,112,220 25,572,620 2036 24 5.89$ 3,908,686 1,682,621 2,226,065 27,798,685 2037 25 6.06$ 4,025,947 1,682,621 2,343,326 30,142,010 2038 26 6.24$ 4,146,725 1,682,621 2,464,104 32,606,114 2039 27 6.43$ 4,271,127 1,682,621 2,588,506 35,194,620 2040 28 6.63$ 4,399,261 1,682,621 2,716,640 37,911,260 2041 29 6.82$ 4,531,238 1,682,621 2,848,617 40,759,877 2042 30 7.03$ 4,667,176 1,682,621 2,984,555 43,744,432 2043 31 7.24$ 4,807,191 1,682,621 3,124,570 46,869,001 2044 32 7.46$ 4,951,407 1,682,621 3,268,786 50,137,787 2045 33 7.68$ 5,099,949 1,682,621 3,417,328 53,555,115 2046 34 7.91$ 5,252,947 1,682,621 3,570,326 57,125,441 2047 35 8.15$ 5,410,536 1,682,621 3,727,915 60,853,355 2048 36 8.39$ 5,572,852 1,682,621 3,890,231 64,743,586 2049 37 8.64$ 5,740,037 1,682,621 4,057,416 68,801,002 2050 38 8.90$ 5,912,238 1,682,621 4,229,617 73,030,620 2051 39 9.17$ 6,089,606 1,682,621 4,406,985 77,437,604 2052 40 9.45$ 6,272,294 1,682,621 4,589,673 82,027,277 2053 41 9.73$ 6,460,463 1,682,621 4,777,841 86,805,118 Payback 2054 42 10.02$ 6,654,276 1,682,621 4,971,655 91,776,774 2055 43 10.32$ 6,853,905 1,682,621 5,171,284 96,948,057 2056 44 10.63$ 7,059,522 1,682,621 5,376,901 102,324,958 2057 45 10.95$ 7,271,308 1,682,621 5,588,686 107,913,645 2058 46 11.28$ 7,489,447 1,682,621 5,806,826 113,720,470 2059 47 11.62$ 7,714,130 1,682,621 6,031,509 119,751,979 Page 2 of 3 Project Benefit / Cost Ratio Gallons 664,018 Fuel Inflation 3% Assumes no growth A B A-B=C C Year Project Life Cost per gallon of Diesel Fuel Savings 9,296,249 kwh's at 18.1¢Savings Accum Savings Notes 2060 48 11.97$ 7,945,554 1,682,621 6,262,933 126,014,912 2061 49 12.32$ 8,183,921 1,682,621 6,501,300 132,516,212 2062 50 12.69$ 8,429,438 1,682,621 6,746,817 139,263,029 223,394,083$ 84,131,053$ 139,263,029$ Estimated Cost of Construction 86,951,018$ Project benefit / cost ratio 1.60 Page 3 of 3