Electricity cost calculator (U.S. rates by state)
Work out what a device or a monthly bill costs. The U.S. average residential price in August 2026 was 18.16¢ per kWh. The highest state was Hawaii at 47.18¢ and the lowest was Nevada at 12.72¢ (EIA, released October 23, 2026). Pick your state below to pre-fill its rate, or type the rate from your own bill.
Calculate your cost
Pre-filled with the U.S. residential average for August 2026. Change it to the rate on your bill.
Cost = watts × hours × days ÷ 1,000 × price. Real bills also include fixed charges, taxes and tiered or time-of-use rates, which this estimate does not model unless you enter a fixed charge.
How to use it
For a single device, enter its power in watts, how many hours a day it runs and for how many days. For a whole bill, enter the kWh shown on your bill and, if you want, the fixed monthly charge your utility adds. The result is an estimate of energy charges at the price you enter; the state table below lets you compare your rate with the average where you live.
Questions
Why is my bill different from the state average?
The state figure is an average across all utilities and rate plans. Your bill depends on your utility, whether you have tiered or time-of-use rates, fixed monthly customer charges, taxes and fees, and how much you used in that billing period. Divide the total on your bill by the kWh used to get your own all-in price, then enter it in the calculator.
Where do I find the watts of a device?
Look for a label or plate on the back or bottom of the device, on its power adapter, or in the manual. If it lists amps and volts instead, multiply them: watts = volts × amps. Devices with thermostats or standby modes run at full power only part of the time, so actual use is often lower than the rating times hours.
How often are these prices updated?
EIA publishes Electric Power Monthly about once a month, roughly two months after the data month. This site checks for a new release automatically and rebuilds every page when one appears.
New to this? Read how to calculate electricity cost, how to read your bill, or the latest monthly price report.
Residential electricity price by state, August 2026 (¢/kWh)
| Rank | State | August 2026 | August 2025 | Change |
|---|---|---|---|---|
| 1 | Hawaii | 47.18 | 38.53 | +22.5% |
| 2 | Maine | 32.11 | 28.14 | +14.1% |
| 3 | Massachusetts | 30.48 | 30.55 | -0.2% |
| 4 | California | 29.75 | 30.92 | -3.8% |
| 5 | Alaska | 29.41 | 27.79 | +5.8% |
| 6 | New York | 28.65 | 26.64 | +7.5% |
| 7 | Rhode Island | 28.18 | 26.53 | +6.2% |
| 8 | New Hampshire | 27.64 | 24.44 | +13.1% |
| 9 | District of Columbia | 25.98 | 23.18 | +12.1% |
| 10 | New Jersey | 24.61 | 24.70 | -0.4% |
| 11 | Connecticut | 24.51 | 30.17 | -18.8% |
| 12 | Vermont | 23.84 | 22.10 | +7.9% |
| 13 | Michigan | 22.99 | 20.73 | +10.9% |
| 14 | Pennsylvania | 21.77 | 19.93 | +9.2% |
| 15 | Maryland | 21.40 | 19.89 | +7.6% |
| 16 | Wisconsin | 19.41 | 18.44 | +5.3% |
| 17 | Ohio | 19.38 | 17.55 | +10.4% |
| 18 | Illinois | 19.32 | 18.03 | +7.2% |
| 19 | Delaware | 18.70 | 16.85 | +11.0% |
| 20 | Virginia | 17.64 | 15.85 | +11.3% |
| 21 | Minnesota | 17.20 | 16.89 | +1.8% |
| 22 | Colorado | 17.17 | 16.21 | +5.9% |
| 23 | Iowa | 17.06 | 15.48 | +10.2% |
| 24 | Indiana | 17.02 | 16.21 | +5.0% |
| 25 | New Mexico | 16.51 | 15.98 | +3.3% |
| 26 | Alabama | 16.33 | 16.26 | +0.4% |
| 27 | West Virginia | 16.31 | 15.62 | +4.4% |
| 28 | Missouri | 16.02 | 15.32 | +4.6% |
| 29 | Oregon | 15.92 | 15.85 | +0.4% |
| 30 | Texas | 15.91 | 15.40 | +3.3% |
| 31 | Georgia | 15.90 | 15.55 | +2.3% |
| 32 | South Carolina | 15.76 | 15.16 | +4.0% |
| 33 | Montana | 15.57 | 14.29 | +9.0% |
| 34 | Kansas | 15.47 | 14.65 | +5.6% |
| 35 | South Dakota | 15.15 | 13.90 | +9.0% |
| 36 | Arizona | 15.05 | 15.09 | -0.3% |
| 37 | Florida | 14.99 | 15.33 | -2.2% |
| 38 | North Carolina | 14.95 | 14.59 | +2.5% |
| 39 | Oklahoma | 14.82 | 14.42 | +2.8% |
| 40 | Washington | 14.63 | 13.65 | +7.2% |
| 41 | Mississippi | 14.43 | 13.61 | +6.0% |
| 42 | Wyoming | 14.43 | 14.33 | +0.7% |
| 43 | Arkansas | 14.37 | 13.33 | +7.8% |
| 44 | Kentucky | 13.80 | 13.10 | +5.3% |
| 45 | Nebraska | 13.54 | 12.80 | +5.8% |
| 46 | Tennessee | 13.42 | 13.09 | +2.5% |
| 47 | Idaho | 13.37 | 12.08 | +10.7% |
| 48 | North Dakota | 13.31 | 12.97 | +2.6% |
| 49 | Utah | 13.31 | 13.62 | -2.3% |
| 50 | Louisiana | 12.87 | 12.55 | +2.5% |
| 51 | Nevada | 12.72 | 12.54 | +1.4% |