Chart

V2L, V2H, V2G vs home battery backup chart

Compare V2L, V2H, V2G, transfer equipment, and stationary battery backup concepts for Canadian homes.

Chart boundary

Does not approve bidirectional equipment, utility export, transfer wiring, emergency backup, or vehicle compatibility.

architecture map

Backup architecture comparison

Use the architecture map to separate portable outlet backup from whole-home transfer and grid-interactive systems.

Scopeev storage and backupX-axispower pathY-axisload scopeReviewSemiannualNextBattery runtime calculator
Backup architecture comparisonportableV2LEV outlet -> cord l...backed-up circuitsV2HEV -> bidirectional...utility programV2Gvehicle-grid interfacehome backupStationary ESSbattery inverter
Use the architecture map to separate portable outlet backup from whole-home transfer and grid-interactive systems.
portableV2L
  • EV outlet -> cord loads
  • extension-rated loads only
  • no premises backfeed
backed-up circuitsV2H
  • EV -> bidirectional charger
  • transfer / islanding equipment
  • selected home loads
utility programV2G
  • vehicle-grid interface
  • metering and export agreement
  • utility dispatch program
home backupStationary ESS
  • battery inverter
  • critical-load panel
  • transfer or backup gateway
Compatibilityvehicle + charger + utility
Isolationrequired for premises backup

Decision reference

Show which backup architecture users are talking about before they compare vehicle compatibility, equipment, transfer, and utility requirements.

Reference basis: NRCan V2G demand response program context, Canadian bidirectional charging policy discussion, and EV owner questions.
MethodBest fitWatch pointHandoff
V2LPortable emergency loadsExtension cord and load limitsManufacturer manual
V2HSelected home backup circuitsTransfer equipment and compatibilityQualified design review
V2GUtility program or grid serviceProgram, meter, and interconnection rulesUtility program page
Stationary batteryDedicated home backupCapacity, transfer, and load controlBattery runtime calculator

Use notes

  • Use this chart as a planning and conversation aid only.
  • Confirm current utility requirements, product markings, manufacturer instructions, and local authority requirements before field work.
  • Use the linked calculator or table when the task needs project-specific arithmetic.

Reference sources

Open the underlying public references before treating the chart as project guidance.