Size a generator to charge an EV (Tesla Model Y, F-150 Lightning) alongside your home, with the battery-backup reality.

🇺🇸 Range in miles; US vehicle specs and 120 V / 240 V charging levels.

1 · Your EV

Vehicle Charging level

Level 1 (120V) Level 2 (240V)

Level 2 amperage: 40A

2 · How much to add

Start charge: 20% Target charge: 80%

3 · Your home essentials

Home running watts (during the outage)

Not sure? Size your home loads first →

Charging + whole-home

Charging load

Range added

0mi/hr

Charge time

0hrs

House + car combined

—

Generator to run both

Charging figures use representative vehicle specs and onboard-charger limits; your exact battery size, charge rate, and efficiency vary by trim, temperature, and state of charge. EV charging is a steady load with no startup surge. Estimates for planning.

Keep planning — related tools

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