What EV Charging Actually Costs

The running cost is the happy surprise of EV ownership, and it is also the number the whole buying-guide category skips. Charging at home is generally well below what a comparable gas car costs to fuel - often by a wide margin - but the exact figure depends on your electricity rate and your car's efficiency. So instead of a vague "it's cheaper," we show the formula, a worked example, and a calculator you can run for your own car.

Start with the number for your car

The core guide is cost to charge at home, which has an interactive calculator: put in your battery size or miles, your electricity rate, and your car's efficiency, and it returns the cost per full charge and the cost per mile. The one formula behind all of it is simple - energy used (kWh) times your rate (dollars per kWh) - and we show it so you can check the math by hand. For the annual picture, the yearly cost to charge an EV turns that per-charge figure into a running total you can budget against.

How the cost question divides

• Cost per charge vs cost per mile. Cost per charge depends on battery size; cost per mile is the fairer number for comparing against gas, because it normalizes for how far you actually drive.
• Flat rate vs time-of-use. On a time-of-use plan, when you charge changes what you pay - often dramatically. See off-peak and time-of-use charging.
• EV vs gas. The apples-to-apples comparison, with the assumptions shown, is in EV vs gas cost.
• Per mile and by state. The normalized cost per mile is the fairest number against gas, and cost by state shows how far your local electricity rate swings the total.

What decides your cost

Three inputs: your electricity rate (residential rates vary widely by state and utility), your car's efficiency (miles per kWh - a heavy truck EV and an efficient sedan can differ by more than double), and whether you can shift charging to cheaper off-peak hours. Charging losses add a small overhead too - roughly 10 percent of the energy drawn does not reach the battery - which our calculator accounts for so the estimate is realistic rather than optimistic.

The mistake people make

Comparing a public fast-charging price to home charging and concluding EVs are expensive. Public DC fast charging is a premium, occasional convenience; home Level 2 charging on a residential rate is the everyday cost that actually matters for ownership, and it is a different, much lower number. Get a Level 2 setup sorted - our best Level 2 chargers - and home becomes your default. If the payback of installing one is what you are weighing, the calculator makes that concrete.

If your car is a plug-in hybrid

The arithmetic is genuinely different, and this hub now has its own page for it: cost to charge a plug-in hybrid at home works a full charge on a small pack, the blended cost per mile against the car's own gas mode, and why the cord that came in the trunk is usually all the hardware you need.

Your car, specifically

The formula is the same for every EV, but the two numbers you plug into it - usable pack size and onboard charging rate - are not. These pages do the arithmetic for one car at a time, including the overnight hours and the charger amperage that actually matches it: Tesla, generally, then Model S and Model X, Cybertruck, Chevy Equinox, Blazer and Bolt, GMC Hummer EV, Cadillac Lyriq, Honda Prologue, Kia EV9, Kia Niro EV, Hyundai Ioniq 9, Genesis GV60 and Electrified GV70, Audi Q4 e-tron and Lucid Air. Each one ends at the same place: a charger amperage, and a link to the units that deliver it.