EV V2H & V2G Calculator
Bidirectional charging: power your home from the EV during an outage, or sell energy back to the grid. See the backup days and the real V2G earnings.
Vehicle-to-Home backup
Keep battery above a reserve.
Vehicle-to-Grid earnings
Backup days
V2G gross / year
Battery wear cost
Net V2G / year
V2H backup breakdown
This assumes essentials only. Running heat pumps, EV charging and appliances simultaneously shortens backup time fast.
Is V2G worth it?
Frequently asked questions
What is V2H (Vehicle-to-Home)?
V2H powers your home from the EV battery during outages or peak prices, using bidirectional charging. A typical EV can back up a home for 2-4 days.
What is V2G (Vehicle-to-Grid)?
V2G sells energy from your EV back to the grid at peak times when prices are high, buying it back cheaply overnight. It can earn $200-800/year.
Does V2G damage the battery?
Each discharge cycle wears the battery slightly. At current prices, heavy V2G can cost more in battery wear than it earns — moderate use (a few cycles/week) is usually neutral to positive.
Which EVs support bidirectional charging?
V2H/V2G requires specific hardware and cars like the IONIQ 5/6, Nissan LEAF (CHAdeMO), F-150 Lightning and Rivian. Availability varies by region and grid rules.