11.07¢
per kWh, 2025
[ Otter Tail Power Co / ND ]
Otter Tail Power Co electricity rates in North Dakota
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
−2.7%
vs 2024
45,437
residential customers
+14.1%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Otter Tail Power Co's average effective residential rate (11.07¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 8.81¢ | — | 45,411 |
| 2016 | 8.94¢ | +1.5% | 45,790 |
| 2017 | 8.84¢ | −1.1% | 45,688 |
| 2018 | 9.09¢ | +2.8% | 45,754 |
| 2019 | 9.53¢ | +4.8% | 45,620 |
| 2020 | 9.70¢ | +1.8% | 45,673 |
| 2021 | 10.42¢ | +7.4% | 45,601 |
| 2022 | 10.41¢ | −0.1% | 45,565 |
| 2023 | 10.41¢ | +0.0% | 45,517 |
| 2024 | 11.38¢ | +9.3% | 45,467 |
| 2025 | 11.07¢ | −2.7% | 45,437 |
How this compares
11.82¢
North Dakota average, 2025
−6.3%
Otter Tail Power Co vs ND 2025 average
−35.8%
vs US 2025 average
#9
priciest in ND
Serves 34 counties in North Dakota: Barnes, Benson, Bottineau, Burleigh, Cass, Cavalier, Dickey, Eddy, Foster, Grand Forks, Griggs, Kidder, LaMoure, Logan, McHenry, McLean, Mountrail, Nelson, Pembina, Pierce, Ramsey, Ransom, Renville, Richland, Rolette, Sargent, Sheridan, Steele, Stutsman, Towner, Traill, Walsh, Ward, Wells. 209 ZIP codes.
Questions
Is Otter Tail Power Co raising rates in 2026?
No rate case for Otter Tail Power Co is on file with the North Dakota Public Service Commission in our tracker. Its average residential rate moved −2.7% from 2024 to 2025. We check the commission docket monthly.
What does Otter Tail Power Co charge per kWh?
Otter Tail Power Co's average effective residential rate was 11.07¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). North Dakota's 2025 average was 11.82¢.
How much have Otter Tail Power Co rates gone up in five years?
+14.1% between 2020 and 2025, against +9.5% for North Dakota as a whole over the latest five-year window.
How many customers does Otter Tail Power Co have in North Dakota?
45,437 residential customers in 2025, across 34 counties including Barnes, Benson, Bottineau, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey; rate-case facts are from the North Dakota Public Service Commission docket linked on this page. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)