Watertown Power Plant
Codington County, South Dakota · EIA plant ID 7247 · Operator: Missouri Basin Muni Power Agny
Nameplate68MWSummer 45 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate14,303Btu/kWhfossil units, electric fuel, HHV
First online1978Runs as rarely runs
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 0.5 | 0.1% | 15,869 |
| 2002 | 0.6 | 0.1% | 16,209 |
| 2003 | 1.6 | 0.4% | 14,758 |
| 2004 | 1.9 | 0.4% | 13,968 |
| 2005 | 0.9 | 0.2% | 19,310 |
| 2006 | 1.4 | 0.3% | 22,203 |
| 2007 | 0.3 | 0.1% | 15,885 |
| 2008 | 0.3 | 0.1% | 17,722 |
| 2009 | 0 | 0.0% | — |
| 2010 | 0 | 0.0% | — |
| 2011 | 0 | 0.0% | — |
| 2012 | 0 | 0.0% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 0.1 | 0.0% | — |
| 2015 | 0.1 | 0.0% | 20,741 |
| 2016 | 0.1 | 0.0% | — |
| 2017 | 0.1 | 0.0% | 21,738 |
| 2018 | 0.1 | 0.0% | 16,279 |
| 2019 | 2 | 0.4% | 14,975 |
| 2020 | 0.6 | 0.1% | 18,057 |
| 2021 | 7.3 | 1.7% | 13,387 |
| 2022 | 4.4 | 1.0% | 14,249 |
| 2023 | 5.2 | 1.2% | 13,985 |
| 2024 | 4.9 | 1.2% | 15,128 |
| 2025 | 1.7 | 0.4% | 14,303 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | GT | 67.5 | 45 | Jan 1978 | Operating | — | coming soon |
Owner / operator
Operator: Missouri Basin Muni Power Agny. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Missouri Basin Muni Power Agny | 100.0% | 68 MW |
Nearby plants
Within 80 km.
| Crowned Ridge Wind II Energy Center | 201 MW | 18.2 km |
| Crowned Ridge Wind Energy Center | 200 MW | 35.3 km |
| Dakota Range Wind | 304 MW | 36.4 km |
| Dakota Range III Wind Project | 154 MW | 40.7 km |
| Deuel Harvest Wind Energy LLC | 300 MW | 45.4 km |
| Clark (SD) | 3 MW | 49.2 km |