Most people buy the wrong charger and then plug it into the wrong rate plan. Enter your car and your ZIP — we'll show you what you'd actually pay, how many amps you actually need, and what to buy.
Three inputs. No email required. Every rate figure links to the utility's own filed tariff.
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US average is about 230.
Charging off-peak saves you
$0 / year
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Annual cost to charge, by when you plug in
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Rates change, and your address changes them again. We re-verify every tariff on the date shown, but utilities file revisions continuously, and your actual bill also depends on riders, franchise fees and taxes specific to where you live. Treat this as a well-sourced estimate for comparing your options — then confirm with your utility before you commit to a rate plan or a charger.
Matched to your car
A 48-amp charger on a car that only accepts 32 amps buys you nothing. These are filtered to what your vehicle can actually use.
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What most guides get wrong
Section 30C was repealed effective June 30, 2026. It does not apply to any charger placed in service after that date. If yours was installed on or before June 30, you can still claim it on your 2026 return.
Before agreeing to a $1,500–$4,000 service upgrade, ask your utility for your home's measured peak demand. The NEC lets an electrician size the load from real measured data instead of adding up nameplate ratings — many homes that fail on paper pass on the meter.
Editorial guidance based on NEC 220.87. Confirm with a licensed electrician and your local authority.
The code requires sizing the circuit at 125% of continuous load — the inverse of the same arithmetic, but the article number matters if you're reading the code. EV charging is always treated as a continuous load.
Editorial summary of NEC 625.41 and 625.42. Not installation advice.
How we work
There are people who put chargers in freezers for fourteen hours to test cable pliability, and they are better at it than we would be. We link to them. What nobody maintains is the rate and rebate layer underneath the buying decision — so that's what we do, with a source and a verification date on every figure.