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2.1 Funconality
TheHGCubecandothefollowing:
 1.Storeenergyfromsolararraysforuselateratnightorwhenthewindisn’blowing.
 2.Peakshaving:powerfrombaeriesisusedtoreducethemaximumpowerdrawn
fromtheulity.Thiscanresultincostsavingsinsomejurisdicons.
 3.Loadshiing.Powerfromthebaeriescanbeusedtoreducethepowerdrawn
fromulityduringpeakhourswhenratesarehigh.Thebaeriesarerecharged
duringo-peakhourswhentheratesarelower.
 4.Demandresponse:insomeareasthelocalulitywillpayuserstoprovidepower
tothegridwhendemandishigh.Thisiscalled“netmetering”.Powerowsfrom
thebaeriestothegridwhendemandishigh.Thenthebaeriesarerecharged
whendemandislowerandgridpowerischeaper.
 5.Providelocalpowerwhenthelocalulityhasexperiencedanoutage.
TheHGCubeismodularandupgradeable.Ifallthebaerystacks,baerymodules,or
invertersarenotinstalledinially,theycanbeaddedlater.AHGCubecanbeinstalledwith
onetofour“Stack’d“baerystacks.EachstackconsistsofaBaeryManagementSystem
(BMS)andtwotoeightbaerymodules.Eachmodulecanhold100Ahat48V.Eachstack
cantherforestorefrom9.6KWhto38.4KWh.TheBMSsarconnectedinamaster/slave
conguraonsotheyallworktogether.Eachstackinasystemmusthavethesamenumber
ofbaerymodules.