Electricity cost calculator
Find the power in watts on the appliance label or in its manual, enter how long you use it, and pick your state or the UK.
Running cost calculator
Pick a power or type the watts from the appliance label:
The same use, a year, around the US
How it works: watts × hours ÷ 1,000 = kWh; kWh × price = cost. A year is 52 weeks of use. Default prices: US EIA residential averages (August 2026); UK Ofgem price cap (1 October to 31 December 2026, Direct Debit, without the daily standing charge). Use the price on your own bill for an exact figure. The label shows the maximum power; appliances with a thermostat or a cycle usually draw less on average.
How to read the result
- The label shows the maximum power. Appliances with a thermostat or a cycle (fridges, ovens, space heaters on low) draw less on average, so the real cost is usually lower than the result.
- Your own price matters most. Prices vary by supplier and plan; the price per kWh on your bill gives the exact cost.
- UK standing charge not included. You pay it whatever you switch on: 54.83p a day on the 1 October to 31 December 2026 price cap.
Average residential electricity price by US state
U.S. Energy Information Administration (EIA), Electric Power Monthly, Table 5.6.A, August 2026. Source. US average: 18.16¢/kWh.
| State | ¢ per kWh | 1,000 W for 1 hour |
|---|---|---|
| Hawaii | 47.18 | 47.2¢ |
| Maine | 32.11 | 32.1¢ |
| Massachusetts | 30.48 | 30.5¢ |
| California | 29.75 | 29.8¢ |
| Alaska | 29.41 | 29.4¢ |
| New York | 28.65 | 28.6¢ |
| Rhode Island | 28.18 | 28.2¢ |
| New Hampshire | 27.64 | 27.6¢ |
| District of Columbia | 25.98 | 26.0¢ |
| New Jersey | 24.61 | 24.6¢ |
| Connecticut | 24.51 | 24.5¢ |
| Vermont | 23.84 | 23.8¢ |
| Michigan | 22.99 | 23.0¢ |
| Pennsylvania | 21.77 | 21.8¢ |
| Maryland | 21.40 | 21.4¢ |
| Wisconsin | 19.41 | 19.4¢ |
| Ohio | 19.38 | 19.4¢ |
| Illinois | 19.32 | 19.3¢ |
| Delaware | 18.70 | 18.7¢ |
| Virginia | 17.64 | 17.6¢ |
| Minnesota | 17.20 | 17.2¢ |
| Colorado | 17.17 | 17.2¢ |
| Iowa | 17.06 | 17.1¢ |
| Indiana | 17.02 | 17.0¢ |
| New Mexico | 16.51 | 16.5¢ |
| Alabama | 16.33 | 16.3¢ |
| West Virginia | 16.31 | 16.3¢ |
| Missouri | 16.02 | 16.0¢ |
| Oregon | 15.92 | 15.9¢ |
| Texas | 15.91 | 15.9¢ |
| Georgia | 15.90 | 15.9¢ |
| South Carolina | 15.76 | 15.8¢ |
| Montana | 15.57 | 15.6¢ |
| Kansas | 15.47 | 15.5¢ |
| South Dakota | 15.15 | 15.2¢ |
| Arizona | 15.05 | 15.1¢ |
| Florida | 14.99 | 15.0¢ |
| North Carolina | 14.95 | 14.9¢ |
| Oklahoma | 14.82 | 14.8¢ |
| Washington | 14.63 | 14.6¢ |
| Mississippi | 14.43 | 14.4¢ |
| Wyoming | 14.43 | 14.4¢ |
| Arkansas | 14.37 | 14.4¢ |
| Kentucky | 13.80 | 13.8¢ |
| Nebraska | 13.54 | 13.5¢ |
| Tennessee | 13.42 | 13.4¢ |
| Idaho | 13.37 | 13.4¢ |
| North Dakota | 13.31 | 13.3¢ |
| Utah | 13.31 | 13.3¢ |
| Louisiana | 12.87 | 12.9¢ |
| Nevada | 12.72 | 12.7¢ |
UK electricity price cap
1 October to 31 December 2026, Great Britain average for Direct Debit: 26.32p per kWh and a standing charge of 54.83p a day. Great Britain average, Direct Debit. No VAT on electricity from 1 October 2026 to 31 March 2027. Source: Ofgem.