Watertown Power Plant
Oil power plant in Codington County, South Dakota. 67.5 MW of nameplate capacity across 1 generator, operated by Missouri Basin Muni Power Agny.
Also known as EIA plant 7247
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Key facts
- Capacity
- 67.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- January 1978First generator online
- Operator
- Missouri Basin Muni Power AgnyEIA operator ID 12710
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Codington County, SD44.9017, −97.1083
- EIA plant ID
- 7247EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Watertown produces
Free · EIA-923Net generation, 2025
1.75 GWh
1,748 MWh, final
Capacity factor, 2025
0.3%
2024: 0.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.1–7.3
GWh a year. Low 2016, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 781 | Not reported | 12 of 12 |
| 2001 | 525 | Not reported | 12 of 12 |
| 2002 | 554 | Not reported | 12 of 12 |
| 2003 | 1,573 | Not reported | 11 of 12 |
| 2004 | 1,865 | Not reported | 12 of 12 |
| 2005 | 856 | Not reported | 12 of 12 |
| 2006 | 1,350 | Not reported | 12 of 12 |
| 2007 | 322 | Not reported | 12 of 12 |
| 2008 | 313 | Not reported | 12 of 12 |
| 2009 | 0 | Not reported | 12 of 12 |
| 2010 | 0 | 0.0% | 12 of 12 |
| 2011 | 0 | 0.0% | 12 of 12 |
| 2012 | 0 | 0.0% | 12 of 12 |
| 2013 | 0 | 0.0% | 12 of 12 |
| 2014 | 72 | 0.0% | 12 of 12 |
| 2015 | 143 | 0.0% | 12 of 12 |
| 2016 | 91 | 0.0% | 12 of 12 |
| 2017 | 141 | 0.0% | 12 of 12 |
| 2018 | 104 | Not reported | 12 of 12 |
| 2019 | 1,991 | 0.3% | 12 of 12 |
| 2020 | 596 | 0.1% | 12 of 12 |
| 2021 | 7,266 | 1.2% | 12 of 12 |
| 2022 | 4,404 | 0.7% | 12 of 12 |
| 2023 | 5,231 | 0.9% | 12 of 12 |
| 2024 | 4,919 | 0.8% | 12 of 12 |
| 2025 | 1,748 | 0.3% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · SPPEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Petroleum Liquids | 67.5 | January 1978 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Missouri Basin Muni Power Agny as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Watertown
How much power does Watertown Power Plant produce?
Watertown Power Plant reported 1,748 MWh (1.75 GWh) of net generation in 2025, a 0.3% capacity factor on 67.5 MW of nameplate capacity.
Where is Watertown Power Plant?
Watertown Power Plant is in Codington County, South Dakota, at 44.9017, −97.1083. It is in the Southwest Power Pool balancing area (SWPP).
Who operates Watertown Power Plant?
EIA-860M for August 2026 lists Missouri Basin Muni Power Agny as the operator (EIA operator ID 12710). The operator is not always the owner.
When did Watertown Power Plant start operating?
Its first generator began operating in January 1978, according to EIA-860M.
Does InfraMap have power prices for Watertown Power Plant?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Watertown Power Plant, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page