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How much does it cost to run a computer monitor?
At the U.S. average residential price of 18.16¢ per kilowatt-hour (August 2026), running a computer monitor costs about $10.90 a year. Your own bill depends on your state's rate, which ranges from 12.72¢ to 47.18¢ across the country.
- Per hour
- 0.5¢
- Per day of use
- 4.4¢
- Per month
- 90.8¢
- Per year
- $10.90
Assumption: 30 W, 8 hours a day, 250 days a year — 60 kWh a year. A 27-inch IPS panel at moderate brightness. Larger, brighter or HDR panels run two to three times this.
Cost by state
Same appliance, same usage, 51 different prices. Sorted cheapest first.
| State | Rate | Per month | Per year |
|---|---|---|---|
| Nevada | 12.72¢ | 63.6¢ | $7.63 |
| Louisiana | 12.87¢ | 64.3¢ | $7.72 |
| North Dakota | 13.31¢ | 66.5¢ | $7.99 |
| Utah | 13.31¢ | 66.5¢ | $7.99 |
| Idaho | 13.37¢ | 66.8¢ | $8.02 |
| Tennessee | 13.42¢ | 67.1¢ | $8.05 |
| Nebraska | 13.54¢ | 67.7¢ | $8.12 |
| Kentucky | 13.80¢ | 69.0¢ | $8.28 |
| Arkansas | 14.37¢ | 71.9¢ | $8.62 |
| Mississippi | 14.43¢ | 72.1¢ | $8.66 |
| Wyoming | 14.43¢ | 72.1¢ | $8.66 |
| Washington | 14.63¢ | 73.2¢ | $8.78 |
| Oklahoma | 14.82¢ | 74.1¢ | $8.89 |
| North Carolina | 14.95¢ | 74.8¢ | $8.97 |
| Florida | 14.99¢ | 74.9¢ | $8.99 |
| Arizona | 15.05¢ | 75.2¢ | $9.03 |
| South Dakota | 15.15¢ | 75.8¢ | $9.09 |
| Kansas | 15.47¢ | 77.3¢ | $9.28 |
| Montana | 15.57¢ | 77.9¢ | $9.34 |
| South Carolina | 15.76¢ | 78.8¢ | $9.46 |
| Georgia | 15.90¢ | 79.5¢ | $9.54 |
| Texas | 15.91¢ | 79.5¢ | $9.55 |
| Oregon | 15.92¢ | 79.6¢ | $9.55 |
| Missouri | 16.02¢ | 80.1¢ | $9.61 |
| West Virginia | 16.31¢ | 81.5¢ | $9.79 |
| Alabama | 16.33¢ | 81.6¢ | $9.80 |
| New Mexico | 16.51¢ | 82.6¢ | $9.91 |
| Indiana | 17.02¢ | 85.1¢ | $10.21 |
| Iowa | 17.06¢ | 85.3¢ | $10.24 |
| Colorado | 17.17¢ | 85.9¢ | $10.30 |
| Minnesota | 17.20¢ | 86.0¢ | $10.32 |
| Virginia | 17.64¢ | 88.2¢ | $10.58 |
| Delaware | 18.70¢ | 93.5¢ | $11.22 |
| Illinois | 19.32¢ | 96.6¢ | $11.59 |
| Ohio | 19.38¢ | 96.9¢ | $11.63 |
| Wisconsin | 19.41¢ | 97.0¢ | $11.65 |
| Maryland | 21.40¢ | $1.07 | $12.84 |
| Pennsylvania | 21.77¢ | $1.09 | $13.06 |
| Michigan | 22.99¢ | $1.15 | $13.79 |
| Vermont | 23.84¢ | $1.19 | $14.30 |
| Connecticut | 24.51¢ | $1.23 | $14.71 |
| New Jersey | 24.61¢ | $1.23 | $14.77 |
| District of Columbia | 25.98¢ | $1.30 | $15.59 |
| New Hampshire | 27.64¢ | $1.38 | $16.58 |
| Rhode Island | 28.18¢ | $1.41 | $16.91 |
| New York | 28.65¢ | $1.43 | $17.19 |
| Alaska | 29.41¢ | $1.47 | $17.65 |
| California | 29.75¢ | $1.49 | $17.85 |
| Massachusetts | 30.48¢ | $1.52 | $18.29 |
| Maine | 32.11¢ | $1.61 | $19.27 |
| Hawaii | 47.18¢ | $2.36 | $28.31 |
Cutting the number down
- Brightness is the dominant variable. Dropping from 100% to 60% is a real cut in draw and usually more comfortable.
Questions
- How many watts does a computer monitor use?
- About 30 W while running.
- How much does a computer monitor cost per month?
- About 90.8¢ a month at the U.S. average rate, or $10.90 a year.
- Where is it cheapest to run?
- Nevada, at $7.63 a year, versus $28.31 in Hawaii — a spread of $20.68.