太阳能投资回报率计算.doc

文档介绍：ar-power-:Prices,Design,Installation&Pay-offPeriod(ROI)SolarPhoto-voltaic(PV)technologyisthewayofthefuture,,currentcostandefficiencyofsolarpanelsmakesthemagreen,yetexpensivealternativetoconventionalwaysofgeneratingelectricity,suchasCoal,-spreadofsolarPVisthelongROI(returnoninvestment),,youashomeorbusinessownerwillneedatoknowthefuturesizeofyoursolarsysteminkW(1kilowattis1000watts),gatheryourelectricbillsforthelast12months,recordyourtotalelectricityconsumption–thenumberofkW-hours,andyourthetotalamountyouhadtopay,–,averagecostofelectricityforresidentialuseis19-24centsperkWh,and15-%innearfuture,asannouncedinApril2008,,tailoredforyourneedInMassachusettsandsurroundingstates,wehaveana