Columbia Power System (TN) Electricity Rate per kWh (2024 EIA Data)
Municipal|EIA utility 3855|Tennessee|Bundled
In 2024, Columbia Power System (TN)'s residential customers paid an average of 12.00 cents per kWh: $49 million of revenue over 406,984 MWh of sales across 31,166 bundled residential customers, as reported to EIA on Form 861.
How the 12.00c figure is calculated
12.00c/kWh = $48,855k revenue / 406,984 MWh x 100. This is EIA's average realised price for 2024: everything Columbia Power System (TN) billed its residential customers (energy, delivery, fuel and rider charges, fixed charges) divided by the kilowatt-hours it sold. It is not a tariff rate, and a 2024 annual average will differ from a current bill. For a 1,000 kWh month at this average, the energy cost works out to about $120 before taxes.
About Columbia Power System (TN)'s 2024 electricity prices
Columbia Power System (TN) is a municipally owned electric utility that reports to the U.S. Energy Information Administration under utility number 3855. In 2024 it served 31,166 bundled residential customers in Tennessee, and its average realised residential price was 12.00 cents per kWh: $49 million of residential revenue divided by 406,984 MWh of residential sales.
Across the other sectors, Columbia Power System (TN)'s 2024 average prices were 11.47 cents for commercial customers (5,409 accounts) and 6.05 cents for industrial customers (2 accounts). Industrial customers paid 5.95 cents less per kWh than households, a 50% discount that is typical of high-volume, high-voltage service.
Within Tennessee, Columbia Power System (TN) ranked number 20 of 88 utilities with bundled or delivery service by residential accounts served (31,166) and accounted for 0.93% of the state's residential electricity sales in 2024, measured in MWh sold or delivered rather than in customers. The state-wide average realised residential price in 2024, computed from the same EIA file, was 12.42 cents per kWh, so Columbia Power System (TN)'s customers paid 0.42 cents below the Tennessee average (-3.4%). For context, EIA's latest monthly figure for Tennessee is 14.07 cents per kWh (June 2026, Electric Power Monthly); that is a different, more recent measure across all utilities and is not directly comparable with a 2024 annual average.
EIA's service-territory file places Columbia Power System (TN) in 2 Tennessee counties: Maury and Williamson. On the grid side it operates in the SERC NERC region, and reported distribution as its activities. Balancing authority code: TVA.
Columbia Power System (TN) is not among the utilities included in EIA's preliminary 2025 early release, so the 2024 final data is the most recent figure available for it.
The nearest other utilities in Tennessee by service-territory centroid are City of Lewisburg (TN) (23.4 miles away, 11.22 cents), City of Mt Pleasant (TN) (27.2 miles away, 13.06 cents), Duck River Elec Member Corp (32.9 miles away, 12.50 cents), City of Shelbyville (TN) (34.1 miles away, 11.33 cents), and Nashville Electric Service (34.2 miles away, 13.47 cents).
| Sector | Customers | Sales (MWh) | Revenue ($k) | Avg c/kWh |
|---|---|---|---|---|
| Residential | 31,166 | 406,984 | 48,855 | 12.00 |
| Commercial | 5,409 | 316,202 | 36,281 | 11.47 |
| Industrial | 2 | 174,592 | 10,568 | 6.05 |
Counties served in Tennessee (2)
From the EIA-861 Service Territory file; a listed county can be served in part only.
Nearby and comparable utilities in Tennessee
- EIA utility number
- 3855
- Ownership type
- Municipal
- Data year
- 2024 final (EIA-861)
- Primary state
- Tennessee
- Service type
- Bundled (Part A)
- Bundled residential customers (TN, price basis)
- 31,166
- Residential accounts served (TN)
- 31,166
- All accounts, all sectors (TN)
- 36,577
- Residential price, 2024
- 12.00 c/kWh
- Commercial price, 2024
- 11.47 c/kWh
- Industrial price, 2024
- 6.05 c/kWh
- Residential sales
- 406,984 MWh
- Residential revenue
- $49 million
- Rank in Tennessee by residential accounts served
- 20 of 88
- Share of Tennessee residential sales (MWh, not customers)
- 0.93%
- Tennessee average, 2024
- 12.42 c/kWh
- Counties served (TN)
- 2
- NERC region
- SERC
- Balancing authority
- TVA
- Reported activities
- Distribution
- Registry status
- Reported on Form EIA-861 for 2024
Realised price times usage; fixed charges are already inside the average. Bill calculator ->
Annual averages hide seasonal and tariff differences. Diagnose a high bill or model time-of-use pricing.
Bill Diagnostic ->Time-of-Use Guide ->Source: U.S. Energy Information Administration, Form EIA-861 Annual, 2024 final data (public domain), retrieved 28 August 2026; prices are average realised revenue per kWh, not tariffs. Final 2024 file f8612024.zip (released 3 December 2025) from the EIA-861 detailed data files. Preliminary 2025 figures come from the early-release file f8612025er.zip (4 August 2026), which EIA has not yet validated; they are labelled as such wherever shown and never mixed into a final figure.
Method: cents per kWh = revenue (thousand dollars) divided by sales (megawatthours), times 100. Customer counts, sales and revenue are the utility's own annual survey responses by state and sector. Bundled = energy plus delivery from one utility; delivery-only = the wires charge for customers who buy energy from a competitive supplier; energy-only = a competitive supplier's energy charge without delivery. County lists come from the EIA-861 Service Territory file; territory centroids used for "nearby utilities" are unweighted means of Census 2023 county centroids. EIA content is in the public domain (EIA copyright and reuse statement); the EIA logo is not used. Corrections: [email protected].