By EV Charge Cost Editorial Team. Published September 28, 2026, updated October 26, 2026.
The same electric car can cost 3.7 times as much to charge in one state as in another. The car, the charger and the miles are identical; only the price of a kilowatt-hour changes. This guide looks at how wide the gap is in the latest EIA data and the main reasons behind it.
How wide the gap is right now
The U.S. average residential price for August 2026 was 18.16¢/kWh. The median state sat at 16.33¢/kWh, and 19 of the 50 states and D.C. were above the U.S. average. A typical EV using 33.5 kWh per 100 miles would spend about $1,558 more a year charging at home in Hawaii than in Nevada, at 13,500 miles a year.
| State | Price | Vs U.S. average | EV cost per 100 mi | EV cost per year |
|---|---|---|---|---|
| Nevada | 12.72¢/kWh | −30% | $4.26 | $575 |
| Louisiana | 12.87¢/kWh | −29% | $4.31 | $582 |
| North Dakota | 13.31¢/kWh | −27% | $4.46 | $602 |
| Utah | 13.31¢/kWh | −27% | $4.46 | $602 |
| Idaho | 13.37¢/kWh | −26% | $4.48 | $605 |
| Alaska | 29.41¢/kWh | +62% | $9.85 | $1,330 |
| California | 29.75¢/kWh | +64% | $9.97 | $1,345 |
| Massachusetts | 30.48¢/kWh | +68% | $10.21 | $1,378 |
| Maine | 32.11¢/kWh | +77% | $10.76 | $1,452 |
| Hawaii | 47.18¢/kWh | +160% | $15.81 | $2,134 |
The main reasons prices differ
A residential bill pays for three things: generating the power, moving it over high-voltage transmission lines, and delivering it through the local distribution network to your meter. Each part varies by state.
Fuel mix and fuel costs
States that get much of their power from low-cost sources, such as long-established hydroelectric dams or local natural gas and coal, tend to have cheaper electricity. States that depend on fuel shipped in from elsewhere, or on natural gas bought in tight regional markets, pay more when fuel prices climb. Fuel costs are usually passed through to customers, so they also make prices move from month to month.
Delivery costs: transmission and distribution
Poles, wires, substations and meters are a large part of every bill. Where customers are spread thinly over long distances, each one carries more of that network. Dense cities have the opposite problem in places: building and maintaining infrastructure underground and in crowded areas is expensive.
Grid investment and hardening
Utilities recover the cost of new lines, storm hardening, wildfire-mitigation work and replacement of ageing equipment through rates. States going through heavy investment cycles see this in residential prices, sometimes for years.
Geography and isolation
Island and remote grids cannot import cheap power from neighbors. Hawaii is the clearest example: its island grids are not connected to the mainland and have historically relied heavily on imported petroleum for generation. See why charging in Hawaii costs so much.
Policy and market structure
States differ in how utilities are regulated, how costs are split between homes and businesses, which public-purpose programs are funded through bills, and how quickly they require cleaner generation. These choices shift costs between customer groups and over time.
Weather and demand
Hot summers and cold winters drive peak demand, and grids must be built for the peak. Some utilities charge more in their peak season. See how prices change by season.
Regional patterns in the data
Grouping states by the EIA fuel-price regions used on this site shows the pattern. The Rocky Mountain group had the lowest median price (14.43¢/kWh) and the California group the highest (29.75¢/kWh). Averages hide a lot: every region with several states has a wide spread inside it.
| Region | States | Median price | Lowest | Highest |
|---|---|---|---|---|
| Rocky Mountain | 5 | 14.43¢/kWh | Utah (13.31¢) | Colorado (17.17¢) |
| Gulf Coast | 6 | 15.17¢/kWh | Louisiana (12.87¢) | New Mexico (16.51¢) |
| West Coast (excluding California) | 6 | 15.49¢/kWh | Nevada (12.72¢) | Hawaii (47.18¢) |
| Lower Atlantic | 6 | 15.83¢/kWh | North Carolina (14.95¢) | Virginia (17.64¢) |
| Midwest | 15 | 16.02¢/kWh | North Dakota (13.31¢) | Michigan (22.99¢) |
| Central Atlantic | 6 | 23.19¢/kWh | Delaware (18.70¢) | New York (28.65¢) |
| New England | 6 | 27.91¢/kWh | Vermont (23.84¢) | Maine (32.11¢) |
| California | 1 | 29.75¢/kWh | California (29.75¢) | California (29.75¢) |
Note that Alaska and Hawaii fall in the West Coast (excluding California) group in EIA's fuel-price regions, which widens that group's range even though neither shares a grid with the mainland states in it.
What it means for EV owners
- Your state sets the baseline. Compare all states on the state rankings or open your state page.
- Your utility sets the real number. State averages blend many utilities and plans. Use the rate on your own bill; here is how to find it.
- Plan choice can beat geography. An off-peak or EV rate in an expensive state can cost less than a flat rate in a mid-priced one.