The same home charge can cost two or three times as much in one state as in another, because the electricity price behind it is set locally. The U.S. average residential price is 18.31 cents per kWh (EIA), but state averages sit well above and below that figure. Your car and charger use the same energy everywhere — it is the price per kWh on your bill that moves the cost.
Key Takeaways
- Charging cost follows your local electricity price, which is set state by state — the U.S. average is 18.31 cents per kWh.
- Generation mix, delivery costs, taxes and market structure explain most of the spread between states.
- The same 1,000 miles can cost about $36 or about $90 at home depending only on the price per kWh.
- Check the EIA state tables or your own bill for your real figure, and use off-peak rates to beat your state average.
What Makes Up a State’s Electricity Price
- Generation mix. States with cheap local generation — hydro, wind, low-cost gas or legacy coal — tend to produce cheaper power than states that import fuel or buy on expensive regional markets.
- Delivery costs. Transmission lines, distribution networks and their upkeep are recovered through your per-kWh price or standing charges. Dense older networks and major grid upgrades raise that component.
- Taxes, fees and policy programs. Renewable mandates, efficiency programs and state taxes are funded partly through electricity prices in many states, adding cents that have nothing to do with the energy itself.
- Market structure. Some states regulate the full price; others let generation compete while the wires stay regulated. The model affects how quickly costs pass through to households.
What the Difference Does to a Month of Driving
Take a labelled example: 1,000 miles a month in a car using about 0.30 kWh per mile means roughly 300 kWh from the wall. The energy is identical in every row — only the price changes.
| Price per kWh | Energy for 1,000 miles | Monthly charging cost |
|---|---|---|
| 12 cents (illustrative low-price state) | 300 kWh | About $36 |
| 18.31 cents (U.S. average, EIA) | 300 kWh | About $55 |
| 30 cents (illustrative high-price state) | 300 kWh | About $90 |
The 12 and 30 cent rows are illustrative rates chosen to show the spread, not state quotes — check the EIA’s state tables, or your own bill, for the figure that applies to you. The worked example at the national average is set out in how much it costs to charge an electric car at home.
How to Find Your Own State’s Price
- The U.S. EIA publishes average residential prices by state alongside the national figure; the current tables are linked in the sources below.
- Your own bill is more precise still: divide the total electricity charge by the kWh billed to get your all-in price, including delivery.
- If your utility offers a time-of-use or EV rate, your overnight price may sit well below your state’s average — scheduling is covered in smart charging and time-of-use tariffs.
Wherever you live, the comparison that matters most is against gasoline: at $4.331 per gallon (EIA), even a high-price state’s home charging usually wins per mile, as the charging-versus-gas comparison works through. A charger that displays energy per session, such as the EVDANCE EV-ACS4005T 40A NACS portable charger, makes your own kWh easy to track; a fixed EVDANCE EV-ACT5006T 48A Level 2 wall charger covers the same miles overnight.
Frequently Asked Questions
Which state has the cheapest electricity for EV charging?
It changes over time, and the EIA’s state tables are the place to check rather than a fixed ranking. States with low-cost local generation usually sit at the cheap end; island and import-dependent states usually sit at the expensive end.
Does a high state price make public charging a better deal?
Rarely. Public prices are set by networks on top of the same local electricity costs, plus their own equipment and site costs, so a high-price state tends to have expensive public charging too. Home charging keeps its advantage; the gap just narrows.
Can I do anything about my state’s price?
You cannot change the state average, but you control your own rate and timing: an off-peak or EV tariff, charging overnight, and Level 2 efficiency all cut what you actually pay per kWh and per mile.
Related Reading
- How Much Does It Cost to Charge an Electric Car at Home?
- Is Charging an Electric Car Cheaper Than Gas?
- Smart Charging and Time-of-Use Tariffs: How Scheduling Cuts EV Charging Costs
