EV Charging Cost by State
How much does it cost to charge an electric car where you live? Select your state to see home charging costs based on real residential electricity rates — plus how your state compares to the national average and to gasoline.
Calculate Your State’s EV Charging Cost
Pick your state, set your EV’s efficiency and driving, and adjust the rate to match your utility bill.
Compare EV Charging Costs in Every State
Click any column header to sort. Annual cost uses your efficiency and mileage settings above.
| State | Rate (¢/kWh) | Cost / Mile | Annual Cost |
|---|
Cheapest vs Most Expensive States to Charge an EV
Annual home charging cost at your current settings — five lowest and five highest states.
Why EV Charging Costs Vary So Much by State
The cost of charging an electric car at home depends almost entirely on one number: your local residential electricity rate. That rate varies enormously across the United States. In states with abundant hydropower or natural gas generation — like Washington, Idaho, and Louisiana — households pay around 12 to 13 cents per kilowatt-hour. In Hawaii, which still relies heavily on imported petroleum for power generation, the average residential rate approaches 40 cents per kilowatt-hour, roughly triple the national average. For a typical EV driven 13,500 miles per year, that difference alone can mean more than $1,000 per year in charging costs between the cheapest and most expensive states.
Generation mix is the biggest driver. The Pacific Northwest benefits from legacy hydroelectric dams that produce some of the cheapest power in the country. The Gulf states enjoy low-cost natural gas and regulated utility markets. By contrast, New England and California combine constrained natural gas pipeline capacity, ambitious clean-energy mandates, wildfire-mitigation spending, and high delivery charges — all of which show up on residential bills. Island grids like Hawaii’s face the added cost of shipping fuel by tanker.
The Cheapest States to Charge an EV
Based on current EIA residential rate data, the cheapest states to charge an electric car are Louisiana, Nevada, Idaho, Nebraska, and Tennessee, all averaging under 14 cents per kWh. At a typical efficiency of 3.5 miles per kWh, that works out to roughly 4 cents per mile — or under $550 per year for 13,500 miles of driving. In these states, fueling an EV costs about one-quarter of fueling a comparable gasoline car, making the economic case for going electric overwhelming.
The Most Expensive States to Charge an EV
Hawaii sits far above every other state at roughly 39 cents per kWh, followed by California at about 33 cents, Massachusetts near 30 cents, and Maine and Connecticut in the 28-cent range. In California, a full 60 kWh charge at home costs close to $20 — versus about $8 in Louisiana. Yet Californians still save substantially versus gasoline, because regular gas in California is routinely the priciest on the mainland at well over $4 per gallon. The EV advantage shrinks but does not disappear.
Time-of-Use Rates Can Cut Your Cost Dramatically
The state averages on this page are just that — averages. Many utilities offer time-of-use (TOU) plans that charge far less for overnight electricity, exactly when most EVs charge. In California, for example, some EV-specific TOU plans drop overnight rates to the equivalent of 20 cents per kWh or less, compared with a 33-cent average. Similar plans exist in Arizona, Colorado, Texas, and across the Northeast. If your utility offers an EV or TOU rate, switching plans and scheduling charging after midnight is the single fastest way to lower your charging bill — often by 30 to 50 percent.
How to Lower Your EV Charging Costs
- Switch to a time-of-use or EV rate plan and schedule charging overnight.
- Check for utility rebates — many utilities discount home charger installation or offer bill credits for off-peak charging.
- Drive efficiently: gentle acceleration and moderate highway speeds can lift real-world efficiency from 3.0 to 4.0 mi/kWh, cutting energy cost per mile by a quarter.
- Use free charging where you can — workplaces, hotels, and some retailers still offer complimentary Level 2 charging.
- Consider rooftop solar — in sunny, high-rate states like California and Hawaii, solar can push your effective charging cost below 10 cents per kWh.
- Right-size your charger: a basic 240V setup is plenty for overnight charging; you rarely need the most expensive hardware.
Frequently Asked Questions
For the average American driving 13,500 miles per year in a typical EV (3.5 mi/kWh), home charging costs roughly $40 to $75 per month depending on the state. In low-rate states like Louisiana or Nevada it can be under $45, while in Hawaii it can exceed $110. Use the calculator above with your state’s rate for a precise figure.
Louisiana consistently ranks among the cheapest, with residential rates around 13 cents per kWh, followed closely by Nevada, Idaho, Nebraska, and Tennessee. Cheap natural gas generation and regulated markets keep Gulf and Mountain West rates low.
Hawaii, by a wide margin — residential electricity there averages close to 40 cents per kWh, roughly triple the national average, because most of its power comes from imported petroleum. On the mainland, California is the most expensive at about 33 cents per kWh.
Divide your electricity rate by your EV’s efficiency. For example, 15 cents per kWh divided by 3.5 miles per kWh equals about 4.3 cents per mile. A gasoline car’s cost per mile is the pump price divided by its MPG — $3.00 per gallon at 30 MPG equals 10 cents per mile.
In nearly every state, yes — often dramatically so. States with expensive electricity also tend to have expensive gasoline, which preserves the EV advantage. Even in Hawaii, the priciest state for both fuels, home charging typically still beats gasoline per mile.
No — this tool estimates home charging on residential rates, which is how most EV owners do most of their charging. Public DC fast charging typically costs 25 to 60 cents per kWh in the US, two to four times the residential average, so road-trip charging costs more per mile.
A time-of-use (TOU) plan charges different rates depending on when you use power. Overnight “off-peak” rates can be 30 to 50 percent cheaper than daytime rates. Since EVs usually charge overnight, switching to a TOU or EV-specific plan is one of the easiest ways to cut charging costs.
They are statewide averages from the U.S. Energy Information Administration’s Electric Power Monthly (July 2025 data), rounded to two decimals. Individual utilities and rate plans vary, sometimes significantly — always check your own electric bill and enter your exact rate in the calculator for the most accurate result.
Multiply 60 by your rate: at the national average of about 17 cents per kWh, a full 0–100% charge costs roughly $10. In Louisiana it is under $8; in Hawaii it approaches $24. Most drivers rarely charge from completely empty, so a typical nightly top-up costs much less.
Yes — cold weather can cut real-world efficiency by 20 to 40 percent, which raises cost per mile proportionally. Northern states like Minnesota, North Dakota, and Maine see bigger winter efficiency losses. Preconditioning the battery while still plugged in helps limit the extra cost.
Find the Cheapest Way to Charge
Pair this state comparison with our home charging cost calculator to fine-tune your setup, or locate cheap public chargers near you.
More Free EV Tools
Explore our other free tools: all EV tools, home charging cost calculator, charging time calculator, EV vs gas cost comparison, US EV tax credit eligibility checker, best EV finder quiz, MSRP calculator, and EV charging station locator.