5 1 chapter life cycle cost and payback period analysis introduction this describes the method for analyzing economic impacts of possible standards on individual consumers effect include a change in operating expense usually decreased purchase price increased three metrics used consumer to determine lcc captures tradeoff between expenses appliances pbp measures amount time it takes recover assumed higher more energy efficient equipment through lower costs rebuttable is special case where are estimated over range inputs reflecting actual conditions based laboratory specifically doe test procedure these discussed sections 2 3 4 respectively preliminary results presented each metric key variables current assumptions calculations here performed series microsoft excel spreadsheets which
