V2H (Vehicle-to-Home) Calculator

Calculate how long your EV battery can power your home during an outage, plus potential savings from time-of-use electricity arbitrage.

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How It Works

Vehicle-to-Home (V2H) technology allows compatible EVs to power your home during outages using the car battery as a giant backup power source. A 75 kWh EV battery holds roughly 2-3 days of average home electricity (the average US home uses about 30 kWh per day). By running only essential loads (refrigerator, lights, Wi-Fi, phone chargers), you can stretch this to 4-5 days. V2H also enables time-of-use (TOU) arbitrage: charge the EV during cheap off-peak hours and discharge to your home during expensive peak hours. This can save $200-800 per year depending on your utility rate structure. Currently, Ford F-150 Lightning, Nissan Leaf (with CHAdeMO), and several Hyundai/Kia models support V2H. You will need a compatible bidirectional charger like the Ford Charge Station Pro or Wallbox Quasar 2.