Cost to run a water heater by state
A typical ENERGY STAR water heater costs between $136.36 a year in Louisiana and $514.56 in Hawaii, about 3.8 times as much. The median state is around $172.48.
“Typical” is the median annual energy use of 712 current ENERGY STAR certified water heaters (1072 kWh a year) times each state’s average residential price from the U.S. EIA (July 2026). Your own rate and the exact model change the result; use the calculator on any water heater page.
| State | Price (¢/kWh) | Cost per year | Per month |
|---|---|---|---|
| Louisiana | 12.72 | $136.36 | $11.36 |
| Nevada | 12.77 | $136.89 | $11.41 |
| Utah | 13.12 | $140.65 | $11.72 |
| North Dakota | 13.41 | $143.76 | $11.98 |
| Tennessee | 13.71 | $146.97 | $12.25 |
| Idaho | 13.73 | $147.19 | $12.27 |
| Nebraska | 13.78 | $147.72 | $12.31 |
| Kentucky | 13.81 | $148.04 | $12.34 |
| Arkansas | 14.33 | $153.62 | $12.80 |
| Oklahoma | 14.35 | $153.83 | $12.82 |
| Wyoming | 14.36 | $153.94 | $12.83 |
| Mississippi | 14.54 | $155.87 | $12.99 |
| Washington | 14.71 | $157.69 | $13.14 |
| Montana | 14.99 | $160.69 | $13.39 |
| Florida | 15.03 | $161.12 | $13.43 |
| North Carolina | 15.16 | $162.52 | $13.54 |
| Kansas | 15.27 | $163.69 | $13.64 |
| South Dakota | 15.37 | $164.77 | $13.73 |
| Arizona | 15.38 | $164.87 | $13.74 |
| South Carolina | 15.47 | $165.84 | $13.82 |
| West Virginia | 15.78 | $169.16 | $14.10 |
| Texas | 15.88 | $170.23 | $14.19 |
| Oregon | 15.97 | $171.20 | $14.27 |
| Iowa | 15.99 | $171.41 | $14.28 |
| Missouri | 16.09 | $172.48 | $14.37 |
| New Mexico | 16.09 | $172.48 | $14.37 |
| Georgia | 16.27 | $174.41 | $14.53 |
| Alabama | 16.40 | $175.81 | $14.65 |
| Indiana | 16.73 | $179.35 | $14.95 |
| Colorado | 17 | $182.24 | $15.19 |
| Minnesota | 17.45 | $187.06 | $15.59 |
| Virginia | 17.55 | $188.14 | $15.68 |
| Delaware | 18.48 | $198.11 | $16.51 |
| Wisconsin | 19.06 | $204.32 | $17.03 |
| Illinois | 19.22 | $206.04 | $17.17 |
| Ohio | 19.45 | $208.50 | $17.38 |
| Maryland | 21.41 | $229.52 | $19.13 |
| Pennsylvania | 21.72 | $232.84 | $19.40 |
| Michigan | 23.05 | $247.10 | $20.59 |
| Vermont | 23.75 | $254.60 | $21.22 |
| Connecticut | 24.16 | $259.00 | $21.58 |
| New Jersey | 25.19 | $270.04 | $22.50 |
| District of Columbia | 25.21 | $270.25 | $22.52 |
| New Hampshire | 26.60 | $285.15 | $23.76 |
| Rhode Island | 28.29 | $303.27 | $25.27 |
| Alaska | 28.83 | $309.06 | $25.75 |
| New York | 29.90 | $320.53 | $26.71 |
| Massachusetts | 30.49 | $326.85 | $27.24 |
| Maine | 32.41 | $347.44 | $28.95 |
| California | 33.61 | $360.30 | $30.02 |
| Hawaii | 48 | $514.56 | $42.88 |
Sorted from the cheapest state to the most expensive. See also electricity prices by state and all water heaters.