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HomeMy WebLinkAbout18 Minimum Electric Panel Size UpgradesAgendaItem#18TRÜ&E1ONNER—PublicUtilityDistrictWORKSHOPTo:BoardofDirectorsFrom:AndrewAuDate:December04,2019Subject:MinimumElectricPanelSizesforNewConstructionandServiceUpgrades1.WHYTHISMATTERISBEFORETHEBOARDThisinformationalitemisbeforetheBoardtodiscussproposedminimumelectricpanelsizesforresidentialandcommercialservices.2.HISTORYInOctober2019,staffpresentedanactionitemforconsiderationofanelectrificationandtime-of-useratestudytodevelopfutureprogramsandincentivestoincreaseadoptionofcarbonfreeend-uses.Aseparate,butconnectedissue,isthatcustomers’servicesmustbesizedappropriatelytohandletheincreasedloadfromanticipateddistributedenergyresourcesaswellaselectrification.ThevastmajorityofupgradeandnewserviceapplicationsreceivedbytheDistrictarefor200Amp(A)servicesorgreater.3.NEWINFORMATIONAgrowingnumberofDistrictcustomersareinstallingsolarphotovoltaics(PV)ontheirhomes,howevertheDistricthasrequiredthatamajorityofthesecustomersupgradetheirservicepanelstocomplywiththeNationalElectricCode(NEC)solarrequirements.TheNECstipulatesthatsolarcannotexceed20%oftheservicepanel’srating,andasillustratedinTable1,almostfiftypercentoftheservicesintheDistrictareunder200A.Thislimitscustomerswitholder1OOAservicestoatotalofonly20A(2.4kW)ofsolarwhilethemajorityofPVinstallationsexceedthislimit.Thisproblemwillbeexacerbatedwiththeupcoming2020Title-24energycodechangesthatwillrequiresolarPVonallnewresidentialconstruction,staringJanuary1st.Customerswitholder100Aserviceswillalsobelimitedintheirabilitytoelectrifytheirhomesandbusinessessincetheirservicepanelwillnotbeabletoaccommodatetheincreasedloadfromtheseenduses.PanelSizes(Amps)<200200-399>400GrandTotal5,7577,15221413,123Table1:CountofElectricPanelSizes Inordertomakehomesreadyforfuturesolarandelectrificationupgrades,staffproposethatallnewservicesandseivicepanelreplacementprojectstoinstallapanelsizedtoatleast200Amps.Thiswouldbesufficientforamodestsizedhomeorbusinesstobemadereadyforfutureelectrificationatminimalcost.Panelupgradecostassessmentincludes:.DistrictFees-BasedontheDistrict’scurrentfeestructure,thecustomerwouldnotincuranyadditionalfeesfromthisrequirement;.Panelcosts-200ApanelsaretheindustrystandardinTruckee,sotheyaregenerallylessexpensivethan100/125Apanelsthatmustbeordered;.PanelCavity-someworkmayberequiredtoexpandthecavityrequiredfora200Apanel.Arebatecanbedevelopedaspartoftheelectrificationprogramtooffsetthesecosts;and.Distributionsystemupgrades-Residentialcustomershaveaflatfacilityfeeandarenotimpactedbyanyrequireddistributionsystemupgrades.Commercialcustomerswouldberesponsibleforsecondarylineupgrades,ifrequired,howeverarebatecanbedevelopedaspartoftheelectrificationprogramtooffsetthesecosts.ProposedchangestoenactthisrequirementareshowninredonDistrictCodeTitle7,ElectricServiceandAppendixF-ElectricFacilitiesFees,whichareprovidedasAttachment3and4.4.FISCALIMPACTThereisnofiscalimpactassociatedwiththisitem.5.RECOMMENDATIONProvideinputanddirectiontostaff./i’zcJoeHorvathMichaelD.HolleyElectricUtilityDirectorGeneralManager -UCHAPTER7.12APPLICATIONFORSERVICE-NEWCONSTRUCTION&UPGRADESSections:7.12.010General7.12.020ChangeinCustomer’sEquipmentorOperations7.12.030NewConstructionandUpgrades7.12.040As-builtDrawingProcedure7.12.010GeneralEachapplicantforelectricserviceshallcompletethenecessaryapplicationandshallpaytotheDistricttherequiredfeesasdeterminedbytheDistrict.7.12.010.1EachapplicantwillberequiredtoshowidentificationwhenheorshesignstheDistrict’sapplication.7.12.010.2Theapplicationforserviceisawrittenrequestforserviceanddoesnotbindtheapplicanttoacceptservice,nordoestheapplicationrequirethattheDistrictactuallyprovideelectricservice.Itdoes,however,bindtheapplicanttobegovernedbyallrulesandregulationsoftheDistrictincaseserviceisrendered.7.12.010.3TheDistrictshallrenderservicewhenithasdeterminedthattheapplicanthascompliedwiththefollowingprovisions:7.12.010.3(A)TheapplicanthasreceivedavalidbuildingpermitfromtheTownofTruckeeortheappropriateagencygoverningwherethepropertyislocated.7.12.010.3(B)AllwrittenagreementsbetweentheapplicantandtheDistricthavebeenevaluatedbystaff,fullyexecutedbythepartiesandifapplicable,approvedbytheBoardofDirectors.PleaserefertotheDistrict’sDevelopmentAgreementGuidelinesfornewdevelopments.7.12.010.3(C)Theapplicanthasdemonstratedthattheyhaveacceptablecreditandpaidallappropriatefeesandcharges.7.12.010.3(D)Theapplicanthasinstalledthenecessaryservicefacilities.7.12.020ChangeinCustomer’sEquipmentorOperationsIntheeventacustomerdesirestomakeamaterialchangeintheamountofconsumptionorinthesize,character,orextentoftheequipmentandfacilitiesprovidingelectricservicetothem,theyshallimmediatelyfilewiththeDistrictanamendmentoftheapplicationforservice,payallchargesrequiredtherebyandobtainapprovaloftheDistrictpriortoacceptingsuchservice.Allservicepanelreplacementorupgradeprojectsmustinstalla200AMPSpanelorgreater(i.e.Allpanelssizedlessthan200AMPSmustbereplacedwithapanel200AMPSorgreater)CustomermayalsoberequiredtoobtainapprovalofservicechangesfromtheTownofTruckeeBuildingDepartmentortheStateofCalifornia.7.12.030NewConstructionandUpgrades I7.12.030.1Applicationsfornewconstructionandupgradesshallbeprocessedasoutlinedbelow.Allapplicationsfornewconstructionmusttake200AMPserviceorgreater.7.12.030.2Theapplicantshallberesponsibleforthecostsoftrenching,backfilling,conduitandothercostsasmaybeoutlinedinindividualdevelopmentagreementsinordertoprovideelectricserviceforanelectricalproject.7.12.030.3TheGeneralManagershalldevelopoperationalmethodsforstaffusetoimplementtheintentofthispolicy. J--APPENDIXFELECTRICFACILITIESFEESA.ResidentialFacilitiesFees(effectiveApril6,2008)1.NewResidentialAreas:Theamountoftheelectricfacilitiesfeesshallbebasedaccordingtopanelsizeasfollows:a.200Amporless-$1,298.b.400Amp-$2,595.2.ExistingResidentialAreas:Withinexistingresidentialareas,thedeveloperorownerwhobuildsanimprovementonavacantparcelwillpaythedifferenceinfacilityfeesbetweenthecurrentfacilityfeeandthefeethatwaspaidforthatparticularparcelatthetimetheresidentialareawasoriginallydeveloped.Inaddition,ifthedeveloperorownerwhobuildsanimprovementonavacantparceldesirestoinstallanelectricservicelargerthana200ampsinglephasepanel,thedeveloperorownerwillpaythedifferenceinfacilityfeesbetweenthelargerpanelanda200amppanel.3.ModificationtoExistingResidentialService:Acustomerdesiringtomodifythesizeofanexistingpanelforaresidentialservicewillpaythedifferenceinfacilityfees,atthecurrentfeeschedule,betweenthelargerpanelandthefacilityfeethatwaspaidatthetimetheexistingpanelwasinstalled.Existingpanelslessthan200Awillbecreditedatthe200Afeeschedule.B.CommercialFacilitiesFees1.NewCommercialDevelopment:Fornewcommercialdevelopment,facilityfeeswillbedueandpayableuponexecutionofadevelopmentagreementwiththeDistrict.Facilityfeeswillbechargedaccordingtothevoltage,panelsize,andphasingrequirementsasrequestedandnotedinthedevelopmentapplicationsubmittedtotheDistrictbythedeveloper.Theamountofcommercialelectricfacilitiesfeesshallbechargedaccordingtothefollowingschedule:VoltagePanelSizeIPhaseFee3PhaseFee120/240200AorDOC$1,298$2,247120/240400$2,596$4,496120/240600$3,893$6,743800$5,191$8,992120/2401000$6,489$11,239120/2401200$7,787$13,488120/2401400$9,085$15,734120/2401600$10,382$17,9831201208200Aorcoc$1,125$1,948120/208400$2,250$3,896120/208600$3,374$5,8441201208800$4,499$7,792120/2081000$5,624$9,741120/2081200$6,749$11,688 4.120/2081400$7,873$13,636120/20$1600$8,998$15,586120/20$2000$11,248$19,481277/480200Aerlooc$2,596$4,496277/480400$5,191$8,9922771480600$7,787$13,4882771480800$10,382$17,983277/4801000$12,978$22,47927714801200$15,574$26,97527714801400$18,169$31,470277/4801600$20,765$35,966277/4802000$25,956$44,9562.ModificationtoExistingCommercialService:Acustomerdesiringtomodifyanexistingcommercialserviceduetoanychangeofvoltage,panelsize,and/orphasing,thecustomerwillpaythedifferenceinfacilityfees,atthecurrentfeeschedule,betweentheproposedpanelandthefacilityfeethatwaspaidatthetimetheexistingpanelwasinstalled.Existingpanelslessthan200Awillbecreditedatthe200Afeeschedule.3.Forpanelsizesnotlistedintheprevioussections,thefacilityfeewillbecalculatedbyinterpolatingbetweenorextrapolatingfromthelistedvaluesasappropriate.(Ord2003-07,2008-03)