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1、GCBBioenergy(2013)5,513–524,doi:10.1111/gcbb.12013Howdoesbioenergycomparewithotherland-basedrenewableenergysourcesglobally?MARKPOGSON*,ASTLEYHASTINGS*andPETESMITH**InstituteofBiological&EnvironmentalSciences,UniversityofAberdeen,23StMacharDrive,Aberdeen,AB243UU,UKAbstractThepotentialpowergenerati
2、onfromland-basedbioenergyispredictedgloballyusingacomputermodel.Simul-taneousconsiderationoflanduse,costandcarbonrestrictionsenablespracticalevaluationofnetpoweroutput.Comparisonsaremadewithwindandsolarpower,andasensitivityanalysisisusedtoexploretheeffectsofdifferentpolicyassumptions.Biomassissho
3、wntoofferonlymoderatepower-generatingpotential,andwouldsatisfylessthanhalfofcurrentdemandevenifallsuitableexistingarablelandwereusedtogrowbioenergycrops.However,bioenergycanbecheaptogenerategivencurrenteconomics,andisabletoremoveatmosphericcarboninsomecasesifcoupledwithcarboncaptureandstorage.Win
4、dturbinesareabletoprovidemorepowerglobally,butphotovoltaicsolarpanelsaretheonlysourceconsideredwiththepotentialtosatisfyexistingdemand.Sinceland-basedbioenergyisalsorestrictedbytheneedtogrowfoodforanexpandingpopulation,andtechnologicaldevelopmentsarelikelytogreatlyincreasetheviabilityofotherrenew
5、ablesources,theroleofland-basedbioenergyappearsrelativelylimitedandshort-term.Keywords:bioenergy,carbonemissions,globaldemand,landuse,Miscanthus,productioncost,renewableenergy,solarpower,windpowerReceived23July2012andaccepted8August2012landusecompetition(Ehrlich&Pringle,2008;SmithIntroductionetal
6、.,2010)andenergydistribution(Mackay,2008).PresentfocusonrenewableenergyisdrivenbyaComputersimulationsareusedtomappredictedcombinationofaims,whichincludereducingcarbonglobalpowergeneration,productioncostsandcarbonemissions(Schiermeieretal.,2008),increasingenergyemissions.Resultsforbioenergyarecomp
7、aredagainstsecurity(Eaves&Eaves,2007)andminimisingon-shorewindandsolarpowertoassesstherelativedependenceonfinitefossilfuelreserves(Mackay,2008).importanceofbioenergy.Practicalpotentialsareesti-Bioenergyisaprominentcompo
