How much does it cost to run a heated mattress pad in Illinois?
A 90-watt heated mattress pad costs about 2¢ an hour in Illinois, or about $4.15 a month at 8 hours a day.
Illinois electricity averages 19.22¢ per kWh, about 6% more than the U.S. average of 18.19¢. It ranks 36 of 51 from cheapest to most expensive.
Your cost
Cost by wattage
| Wattage | Hour | Day | Month | Year |
|---|---|---|---|---|
| Low (50 W) | 1¢ | 8¢ | $2.31 | $28.06 |
| Typical (90 W) | 2¢ | $0.14 | $4.15 | $50.51 |
| High (180 W) | 3¢ | $0.28 | $8.30 | $101 |
Day, month and year assume 8 hours of use a day.
Other heating costs
| Appliance | Typical | Per month |
|---|---|---|
| Space heater | 1,500 W | $69.19 |
| Oil-filled radiator | 1,500 W | $69.19 |
| Baseboard heater | 1,500 W | $69.19 |
| Electric blanket | 100 W | $4.61 |
| Electric fireplace | 1,500 W | $34.60 |
| Heat pump (whole house) | 3,500 W | $161 |
Ways to spend less
- Heat the room you're in, not the house: a space heater beats raising the thermostat only if you turn the central heat down.
- Use the low setting once the room is warm; it halves the cost per hour.
- Close doors and curtains to keep the heat in the room.
Monthly cost in every state
| State | Rate | Per month |
|---|---|---|
| North Dakota | 12.36¢ | $2.67 |
| Nebraska | 12.90¢ | $2.79 |
| Idaho | 12.96¢ | $2.80 |
| Utah | 13.16¢ | $2.84 |
| Louisiana | 13.35¢ | $2.88 |
| Nevada | 13.53¢ | $2.92 |
| Oklahoma | 13.58¢ | $2.93 |
| Arkansas | 13.61¢ | $2.94 |
| Tennessee | 13.87¢ | $3.00 |
| Montana | 13.95¢ | $3.01 |
| Wyoming | 13.95¢ | $3.01 |
| Missouri | 13.96¢ | $3.02 |
| Iowa | 14.20¢ | $3.07 |
| Kentucky | 14.27¢ | $3.08 |
| Washington | 14.40¢ | $3.11 |
| South Dakota | 14.50¢ | $3.13 |
| North Carolina | 14.94¢ | $3.23 |
| New Mexico | 15.08¢ | $3.26 |
| Mississippi | 15.19¢ | $3.28 |
| Kansas | 15.21¢ | $3.29 |
| Florida | 15.30¢ | $3.30 |
| Georgia | 15.40¢ | $3.33 |
| Oregon | 15.40¢ | $3.33 |
| Arizona | 15.44¢ | $3.34 |
| West Virginia | 15.47¢ | $3.34 |
| South Carolina | 15.93¢ | $3.44 |
| Texas | 16.06¢ | $3.47 |
| Minnesota | 16.25¢ | $3.51 |
| Alabama | 16.54¢ | $3.57 |
| Colorado | 16.72¢ | $3.61 |
| Virginia | 16.83¢ | $3.64 |
| Indiana | 17.04¢ | $3.68 |
| Delaware | 17.86¢ | $3.86 |
| Ohio | 18.70¢ | $4.04 |
| Wisconsin | 19.00¢ | $4.10 |
| Illinois | 19.22¢ | $4.15 |
| Pennsylvania | 21.04¢ | $4.54 |
| Maryland | 21.30¢ | $4.60 |
| Michigan | 21.53¢ | $4.65 |
| Vermont | 23.95¢ | $5.17 |
| New Jersey | 23.98¢ | $5.18 |
| District of Columbia | 24.66¢ | $5.33 |
| New Hampshire | 26.79¢ | $5.79 |
| Alaska | 27.09¢ | $5.85 |
| Connecticut | 27.97¢ | $6.04 |
| Rhode Island | 29.22¢ | $6.31 |
| New York | 29.38¢ | $6.35 |
| Maine | 29.99¢ | $6.48 |
| Massachusetts | 30.14¢ | $6.51 |
| California | 33.25¢ | $7.18 |
| Hawaii | 46.28¢ | $10.00 |
At 90 watts for 8 hours a day, 30 days a month. Rates are average residential prices from the U.S. Energy Information Administration, January–July 2026 (EIA Electric Power Monthly). Your bill's rate may differ, so enter your own in the calculator.