A Manual for the Economic Evaluation of Energy Efficiency and Renewable Energy Technologies

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A Manual for the Economic Evaluation of Energy Efficiency and Renewable Energy Technologies ( a-manual-economic-evaluation-energy-efficiency-and-renewable )

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I. The NPV calculation results in the same answer regardless of the dollar basis. This will always be the result if proper discount rates are applied to appropriate cash flows. Although the positive NPV indicates that this is a good investment, the analyst must be careful because good investments are not necessarily the best ones. Refer to Section 3, Selection Criteria Guide, for guidance as to the appropriate application of economic measures to use for different investment types. Total Life-Cycle Cost Total life-cycle cost (TLCC) analysis is used to evaluate differences in costs and the timing of costs between alternative projects. TLCCs are the costs incurred through the ownership of an asset over the asset’s life span or the period of interest to the investor (Brown and Yanuck 1980). Only those costs relevanttothedecisionshouldbeincludedinthemalysis. TLCCanalysisconsidersallsignificantdollar costs over the life of the project. These costs are then discounted to a base year using present value analysis. Any revenue generated fiom the resale of the investment is also discounted to the base year and subtracted from present value costs. TLCC is not recommended for economic evaluation to decide whether to accept or reject an investment because TLCC provides no frame of reference for what are acceptable and unacceptable costs, and TLCC does not address benefits and returns. TLCC can be used for ranking or selecting among mutually exclusive alternatives that provide exactly the same benefits and returns. TLCC analysis is composed of many different costs, and, as with NPV analysis, the analyst must know the form of the cash flows (current or constant dollars), so the correct discount rate can be applied. If the cash flows are not discounted using appropriate rates, the analysis will be flawed. Period Table4-4. Net:PresentValueofConstantDollarCashFlows Cash Flow 0 $(10,000) 1 7,061 2 6,180 3 5,694 4 5,407 5 5,397 Present Value Interest Factor (Ill+ d) 0.91 96 0.8457 0.7777 0.71 52 0.6577 Present Value $(I 0,000) 6,495 5,228 4,430 3,868 3,551 NPV = $13,572 42

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