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TypesofRenewableEnergyTherearefivetypesofrenewableenergy:
• Solar• Wind• Geothermal• MunicipalSolidWaste• Biomass
However,sincesolarandwindarethetwoprevalentrenewableenergysources,thisdocumentprovidesabriefexplanaBonofthevarioussystemsthatconvertthesenaturalsresourcesintoenergy.
SolarEnergyTheearth’ssunmakesmoreenergyinonesecondthantheamountsixbillionnuclearpowerplantswouldproduceinayear.ThesunisalsoulBmatelythesourceofallenergysupplies,exceptfornuclearandgeothermalenergy.
SolarEnergyConversionSystems
SolarElectricSystems
Photovoltaic(PV)systemsusesunlighttogenerateelectricity.APVpanelismadeupofmanyindividualsolarcells,allofwhicharecoveredwithaprotecBvesheetofglassinaPVmoduleorpanel.Thecellsaremadefromsilicon,averycommonchemicalelementfoundinsand.InaddiBontothepanels,aPVsystemusuallycontainsaninvertertocovertsolarpowerfromdirectcurrent(DC)tothealternaBngcurrent(AC)oftheuBlitygridpowertransmissionanddeliverysystem.BeforeinstallingaPVsystemonahomeorbusiness,itmakessensetomakeahomeorbusinessasenergyefficientaspossiblesoaccuratePVsizingcantakeplace.PVsystemscanbesizedandconfiguredtogenerateelectricityingrid‐connectedorstand‐aloneapplicaBons.
SolarThermalSystems
Passivesolarthermaldesigncanbeusedtoheathomesandbuildingsthataredesignedwithlargeareasofglassfacingsouthtomaximize“passivesolargain.”SolarthermalmasssuchasBlefloors,Trombewalls,andstonecancollect,store,anddissipatethesun’sheat.AcBvesolarthermalsystemstypicallyuseflatplateorevacuatedtubecollectorsthatcollectandconcentratethesun'sheatandtransfertheheattocirculaBngwaterorsomeotherheattransferfluid.AcBvesolarthermalsystemscanprovidespaceheaBng,waterheaBng,cooling,ordehumidificaBon.
SolarThermalGenera;onSystems
Solarthermalsystemscanalsogenerateelectricitythroughtechnologies,whichtakeadvantageofheatproducedbyconcentraBngthesun'sraysontoasmalllocaBonwithmirroredreflectors.
HybridSolarElectric/ThermalSystems
Solarsystemsthatproducebothelectricityandheatedair(PV/T)cangenerate2‐3BmesmoreenergythanastandalonePVsystemforapproximately25%morecost,accordingtosomemanufacturers.ThetwosolartechnologiesinonefootprintoffsetbothheaBngandelectricitycosts,whilealsoincreasingthePVperformancebyupto10%bycoolingthepanels.
WindEnergyWindpowerisoneofthemostefficient,deployable,scalableandaffordablerenewableenergytechnologies.ManyareasinMarylandhavewindspeedshighenoughtogeneratesignificantenergyforhomes,businessesandagriculture.UnderMaryland'snetmeteringstatute,customerscanreceivecreditforgeneratedenergyfromuBliBesevenwhenitexceedstheirdemand.BelowareseveralresourcesandprogramsthatcanhelpdeterminetheopBmallocaBonandscopeofanywindenergyproject.
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