Columbia Power System electricity rates
Columbia Power System charges an average of 12.00 cents per kilowatt-hour to residential customers, and the average household on its system paid $131 a month using 1,088 kilowatt-hours, according to its 2024 filing with the U.S. Energy Information Administration.
Municipal utility TVA Tennessee
Where Columbia Power System sits
It is a smaller system, serving 31,166 residential customers, which means its fixed costs are spread across a narrow base. At 12.00¢ per kilowatt-hour it is one of the cheaper places to buy electricity in Tennessee, 17.1% under the statewide average of 14.47¢.
Its customers use more electricity than the national norm, 1,088 kilowatt-hours a month against 871, which amplifies whatever the rate does.
Owned by the city it serves and governed by a local board rather than the state commission. No shareholder return is built into the rate. That matters because a bill is not only the cost of generating electricity: it also carries the cost of the network, and who owns that network changes how it is paid for.
| Rate | Monthly bill | Monthly kWh | |
|---|---|---|---|
| Columbia Power System | 12.00¢ | $131 | 1,088 |
| Tennessee average | 14.47¢ | $162 | 1,199 |
| United States average | 18.44¢ | $155 | 871 |
Utility figures: U.S. Energy Information Administration, Form EIA-861 annual electric power industry report, 2024. State and national figures: Electric Power Monthly, May 2026. Methodology
Where Columbia Power System delivers
Its service territory covers 2 Tennessee counties, either wholly or in part. Utility boundaries follow historic franchise agreements rather than county lines, so a county appearing here does not mean every address in it is served by Columbia Power System.
- Maury
- Williamson
How often the power goes out
In 2024 the average Columbia Power System customer went 174 minutes without electricity across 2.77 interruptions. The median across the 941 utilities that report this is 185 minutes.
That is better than the typical American utility, though the figure includes major storm days and can move sharply from one year to the next.
Other Tennessee utilities
| Utility | Rate | Bill | Customers |
|---|---|---|---|
| Nashville Electric Service | 13.47¢ | $138 | 417,640 |
| City of Memphis | 12.16¢ | $139 | 380,286 |
| City of Jackson | 11.97¢ | $128 | 31,856 |
| City of Dickson | 11.65¢ | $143 | 30,808 |
| Fort Loudoun Electric Coop | 12.11¢ | $162 | 30,527 |
Columbia Power System rates: common questions
How much does Columbia Power System charge per kilowatt-hour?
An average of 12.00 cents per kilowatt-hour across its residential customers in 2024. That is -17.1% against the Tennessee average of 14.47¢ and -34.9% against the national average of 18.44¢. It is an all-in average across every residential rate schedule the utility offers, not a specific tariff.
What is the average Columbia Power System bill?
$131 a month, based on total residential revenue divided by residential customers over the 2024 survey year, at an average of 1,088 kWh a month. The national average bill is $155 at 871 kWh.
Who owns Columbia Power System?
It is classified by the EIA as a municipal utility. Owned by the city it serves and governed by a local board rather than the state commission. No shareholder return is built into the rate.
Is Columbia Power System expensive compared with other Tennessee utilities?
It ranks #49 of the 83 Tennessee utilities covered here, counting from the most expensive. Nationally it ranks #1030 of 1369.