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EV-to-Home Backup Power Calculator

Outage hours from an EV battery.

Inputs

Inputs and assumptions

Usable pack.

Keep for the road.

Fridge, lights, furnace fan, internet. Bidirectional hardware (e.g. 9.6 kW) must exceed this load; most US V2H setups do.

Result

Backup duration
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Energy for home
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What to check

  • Battery kWh
  • Essential load kW

Related calculators

This calculator is a first-pass screening tool. Verify rates, equipment specs, and installer quotes before making a decision.

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