Otter Tail Power Co. electricity rates
Investor-owned utility · Minnesota · MRO region · MISO
Otter Tail Power Co. is a for-profit, investor-owned utility regulated by the state utility commission, serving 50,219 homes in Minnesota. Its residential customers pay an average of 11.76¢/kWh including fixed and delivery charges, 35% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Otter Tail Power Co. bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $58.80 |
| 1,000 kWh | $117.60 |
| 1,500 kWh | $176.40 |
| 2,000 kWh | $235.20 |
Otter Tail Power Co. residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential Service (Rate code 101)time-of-use | 2018-08-01 | $14.00 | 10.2¢ (12am–12am) — summer weekdays |
| Residential Demand Control Service (Rate 241)time-of-use | 2018-07-31 | $18.38 | 5.6¢ (12am–12am) — summer weekdays |
| Residential Service (Rate Code 101)time-of-use | 2018-06-01 | $9.75 | 11.3¢ (12am–12am) — summer weekdays |
| Residential Demand Control Service (Rate Code 241)time-of-use | 2014-07-01 | $16.00 | 4.8¢ (12am–12am) — summer weekdays |
| Farm Service (Rate code 361)time-of-use | 2014-07-01 | $14.00 | 8.1¢ (12am–12am) — summer weekdays |
| Off Peak Water Heating (Rate code 191)time-of-use | 2014-07-01 | $2.00 | 6.1¢ (12am–12am) — summer weekdays |
| Residential Demand Control Service( Rate Code 241)time-of-use | 2014-07-01 | $13.00 | 4.8¢ (12am–12am) — summer weekdays |
| Off Peak Water Heating (Rate code 191)time-of-use | 2014-07-01 | $2.50 | 6.0¢ (12am–12am) — summer weekdays |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Otter Tail Power Co. rate history
2015–2025: +19% change in the average residential rate (9.50¢ → 11.27¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Otter Tail Power Co. | Minnesota avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 557 | 188 | 266 |
| Outages per customer (SAIFI) | 1.74 | 1.17 | 1.34 |
| Average restoration time (CAIDI) | 5 hr 21 min | — | — |
| Outage minutes excluding major storms | 136 | 92 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Otter Tail Power Co.'s counties, customers averaged 5 hr 56 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Beltrami | 1,977 | 46 | 22,983 | 2025-06-21 |
| Cass | 591 | 69 | 7,469 | 2025-06-21 |
| Pope | 590 | 34 | 1,792 | 2025-06-20 |
| Mahnomen | 466 | 20 | 1,887 | 2025-10-11 |
| Norman | 402 | 8 | 762 | 2025-06-21 |
| Grant | 309 | 21 | 3,957 | 2025-11-26 |
| Red Lake | 268 | 4 | 1,323 | 2025-07-27 |
| Wilkin | 242 | 18 | 426 | 2025-07-03 |
| Otter Tail | 232 | 63 | 6,049 | 2025-05-22 |
| Yellow Medicine | 209 | 19 | 1,056 | 2025-03-15 |
| Big Stone | 205 | 2 | 386 | 2025-11-02 |
| Chippewa | 196 | 17 | 1,643 | 2025-07-27 |
| Polk | 176 | 25 | 4,006 | 2025-06-21 |
| Becker | 175 | 46 | 2,140 | 2025-05-15 |
| Kandiyohi | 165 | 24 | 3,282 | 2025-07-28 |
| Lac Qui Parle | 158 | 7 | 355 | 2025-09-20 |
| Douglas | 157 | 39 | 8,645 | 2025-06-20 |
| Stevens | 151 | 15 | 2,434 | 2025-08-22 |
| Lincoln | 134 | 5 | 1,409 | 2025-11-18 |
| Todd | 128 | 37 | 1,806 | 2025-07-15 |
| Traverse | 98 | 4 | 608 | 2025-02-23 |
| Marshall | 90 | 12 | 400 | 2025-01-29 |
| Kittson | 77 | 9 | 480 | 2025-10-26 |
| Lyon | 76 | 17 | 1,594 | 2025-11-17 |
| Swift | 70 | 10 | 1,224 | 2025-03-15 |
Otter Tail Power Co. service area
Otter Tail Power Co. serves 30 counties in Minnesota and 177 ZIP codes.
Becker, Beltrami, Big Stone, Cass, Chippewa, Clay, Clearwater, Douglas, Grant, Kandiyohi, Kittson, Lac Qui Parle, Lincoln, Lyon, Mahnomen, Marshall, Norman, Otter Tail, Pennington, Polk, Pope, Red Lake, Redwood, Roseau, Stevens, Swift, Todd, Traverse, Wilkin, Yellow Medicine
Cities: Willmar, Bemidji, Marshall, Fergus Falls, Alexandria, Detroit Lakes, Thief River Falls, East Grand Forks, Crookston, Morris, Montevideo, Wadena, Pipestone, Breckenridge, Perham, Benson, Roseau, Pelican Rapids, Hawley, Tracy, Ortonville, Warroad, Canby, Ada, Warren, Fosston, Madison, Dawson, Red Lake Falls, Frazee, Minneota, Wheaton, Appleton, Clara City, New York Mills, Mahnomen, Cottonwood, Elbow Lake, Parkers Prairie
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Customers with daily usage data online | 50,172 |
| Time-based rate programs | Time-of-use rates, Critical peak pricing |
| Homes on time-based rates | 17,228 |
| Net-metered solar homes | 86 |
| Homes in demand response (e.g. thermostat rebates) | 18,338 |
| Residential efficiency incentives paid (2025) | $1,499,316 |
| Residential energy saved by programs | 24,880 MWh |
Otter Tail Power Co. at a glance
| Ownership | Investor-owned utility |
| Services | Generation, Transmission, Distribution, Wholesale Marketing |
| Commercial rate | 9.61¢/kWh |
| Industrial rate | 5.98¢/kWh |
| Retail revenue (2025) | $229,898,500 |
| Electricity sold (2025) | 2,798,911 MWh |
| Peak demand | 846 MW summer · 1,004 MW winter |
| Power from own generation | 59% (rest purchased) |
| Line losses | 1.3% |
| Balancing authority | MISO |
| EIA utility ID | 14232 |
Other utilities in Minnesota
Frequently asked questions
What is Otter Tail Power Co.'s electricity rate?
Otter Tail Power Co. residential customers pay an average of 11.76¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 27% below the Minnesota average of 16.22¢ and 35% below the U.S. average.
What is the average Otter Tail Power Co. electric bill?
About $106 a month. The average Otter Tail Power Co. home uses 904 kWh a month. At 1,000 kWh the bill would be about $118.
How many customers does Otter Tail Power Co. have?
Otter Tail Power Co. serves 50,219 residential customers and 63,450 customers in total in Minnesota, across 30 counties.
How reliable is Otter Tail Power Co.?
In 2025, the average Otter Tail Power Co. customer was without power for 9 hr 17 min (SAIDI) over 1.74 interruptions (SAIFI), including major storms. Excluding major event days it was 2 hr 16 min. The Minnesota average was 3 hr 8 min and the U.S. average 4 hr 26 min.
Does Otter Tail Power Co. offer time-of-use rates?
Yes. The OpenEI rate database lists 8 time-of-use residential plans, including Residential Service (Rate code 101). Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Otter Tail Power Co. offer net metering for solar?
Otter Tail Power Co. had 86 residential net-metered customers in 2025 with 1.2 MW of capacity. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Otter Tail Power Co. before making decisions.