💻 Computers & Office
How Much Does a UPS Battery Backup Cost to Run?
At the current U.S. average rate of 18.4¢/kWh (May 2026), a ups battery backup costs about $2.68 per month at typical usage — 24 hours/day (always on).
Per hour
0.4¢
at 5–40 W
Per day
8.8¢
24 hours/day (always on)
Per month
$2.68
15 kWh
Per year
$32.24
175 kWh
A UPS consumes 5–40 watts of overhead keeping its battery charged and electronics ready — before counting the equipment plugged into it. Oversized units carry proportionally larger idle losses.
Calculate it for your home
Per hour
0.4¢
Per day
8.8¢
Per month
$2.68
Per year
$32.24
Uses 15 kWh/month at 18.4¢ per kWh.
Cheapest and most expensive states
Monthly cost at typical usage, using each state's current average residential rate.
Cost in every state
| State | Rate (¢/kWh) | Per hour | Per month | Per year |
|---|---|---|---|---|
| Idaho | 12.4 | 0.2¢ | $1.81 | $21.72 |
| Utah | 13.0 | 0.3¢ | $1.90 | $22.78 |
| Oklahoma | 13.4 | 0.3¢ | $1.96 | $23.48 |
| Nebraska | 13.6 | 0.3¢ | $1.98 | $23.83 |
| Nevada | 13.6 | 0.3¢ | $1.98 | $23.83 |
| North Dakota | 13.6 | 0.3¢ | $1.98 | $23.83 |
| Missouri | 13.7 | 0.3¢ | $2.00 | $24.00 |
| Iowa | 14.1 | 0.3¢ | $2.06 | $24.70 |
| New Mexico | 14.1 | 0.3¢ | $2.06 | $24.70 |
| Louisiana | 14.2 | 0.3¢ | $2.07 | $24.88 |
| Arkansas | 14.4 | 0.3¢ | $2.10 | $25.23 |
| Tennessee | 14.5 | 0.3¢ | $2.12 | $25.40 |
| Montana | 14.7 | 0.3¢ | $2.15 | $25.75 |
| Wyoming | 14.8 | 0.3¢ | $2.16 | $25.93 |
| Kentucky | 15.0 | 0.3¢ | $2.19 | $26.28 |
| Washington | 15.0 | 0.3¢ | $2.19 | $26.28 |
| Kansas | 15.1 | 0.3¢ | $2.20 | $26.46 |
| North Carolina | 15.1 | 0.3¢ | $2.20 | $26.46 |
| Arizona | 15.2 | 0.3¢ | $2.22 | $26.63 |
| Florida | 15.2 | 0.3¢ | $2.22 | $26.63 |
| South Dakota | 15.7 | 0.3¢ | $2.29 | $27.51 |
| Georgia | 15.8 | 0.3¢ | $2.31 | $27.68 |
| Colorado | 16.2 | 0.3¢ | $2.36 | $28.38 |
| Mississippi | 16.2 | 0.3¢ | $2.36 | $28.38 |
| South Carolina | 16.2 | 0.3¢ | $2.36 | $28.38 |
| Oregon | 16.3 | 0.3¢ | $2.38 | $28.56 |
| Texas | 16.4 | 0.3¢ | $2.39 | $28.73 |
| Alabama | 16.8 | 0.3¢ | $2.45 | $29.43 |
| West Virginia | 16.8 | 0.3¢ | $2.45 | $29.43 |
| Minnesota | 17.0 | 0.3¢ | $2.48 | $29.78 |
| Virginia | 17.6 | 0.4¢ | $2.57 | $30.84 |
| Indiana | 18.2 | 0.4¢ | $2.66 | $31.89 |
| Delaware | 19.4 | 0.4¢ | $2.83 | $33.99 |
| Ohio | 19.5 | 0.4¢ | $2.85 | $34.16 |
| Wisconsin | 19.7 | 0.4¢ | $2.87 | $34.51 |
| Pennsylvania | 21.6 | 0.4¢ | $3.15 | $37.84 |
| Maryland | 21.8 | 0.4¢ | $3.18 | $38.19 |
| Michigan | 22.0 | 0.4¢ | $3.21 | $38.54 |
| New Jersey | 23.3 | 0.5¢ | $3.40 | $40.82 |
| Illinois | 23.9 | 0.5¢ | $3.49 | $41.87 |
| Vermont | 24.9 | 0.5¢ | $3.63 | $43.62 |
| Washington, D.C. | 25.4 | 0.5¢ | $3.71 | $44.50 |
| New Hampshire | 27.3 | 0.5¢ | $3.98 | $47.83 |
| Connecticut | 27.4 | 0.5¢ | $4.00 | $48.00 |
| Alaska | 28.2 | 0.6¢ | $4.11 | $49.41 |
| Maine | 28.6 | 0.6¢ | $4.17 | $50.11 |
| Massachusetts | 28.8 | 0.6¢ | $4.20 | $50.46 |
| Rhode Island | 29.5 | 0.6¢ | $4.30 | $51.68 |
| New York | 29.9 | 0.6¢ | $4.36 | $52.38 |
| California | 33.3 | 0.7¢ | $4.86 | $58.34 |
| Hawaii | 52.0 | 1.0¢ | $7.59 | $91.10 |
How to lower the cost
- Enable sleep after 15–20 minutes of idle — modern machines wake in seconds.
- Anything always-on (servers, mining, chargers on strips) deserves a smart plug and a schedule.
- Laptops do the same office work as desktops on a quarter of the power.
Frequently asked questions
How much electricity does a ups battery backup use?
A typical ups battery backup draws about 20 watts in use. At 24 hours/day (always on), that works out to roughly 0.5 kWh per day, or 15 kWh per month.
How much does it cost to run a ups battery backup for 1 hour?
At the current U.S. average residential rate of 18.4¢/kWh, one hour costs about 0.4¢. In Idaho (12.4¢/kWh) it's 0.2¢, while in Hawaii (52¢/kWh) it's 1.0¢.
How much does a ups battery backup cost to run per month?
With typical usage (24 hours/day (always on)), expect about $2.68 per month at the U.S. average rate — from $1.81 in Idaho up to $7.59 in Hawaii. Rates are as of May 2026.
Does a ups battery backup use a lot of electricity?
Not really — at typical usage it's under 2% of an average home's monthly consumption. Heating, cooling, hot water, and drying are the loads that move bills.