Taum Sauk
Pumped storage power plant in Reynolds County, Missouri. 408 MW of nameplate capacity across 2 generators, operated by Union Electric Co - (MO).
Also known as Taum Sauk Hydroelectric Power Station · EIA plant 2108
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 408 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 1963First generator online
- Operator
- Union Electric Co - (MO)EIA operator ID 19436
- Grid
- MISOBalancing authority MISO
- Price nodes
- 2 MISO nodesResource nodes with prices
- Location
- Reynolds County, MO37.5208, −90.8347
- EIA plant ID
- 2108EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Taum Sauk produces
Free · EIA-923Net generation, 2025
−160 GWh
−159,810 MWh, final
Capacity factor, 2025
Not reported
2024: Not reported
January to July 2026
−73.2 GWh
Provisional
Range, 2015 to 2025
−159.8–−19.6
GWh a year. Low 2025, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | −192,095 | Not reported | 12 of 12 |
| 2001 | −265,860 | Not reported | 12 of 12 |
| 2002 | −206,070 | Not reported | 12 of 12 |
| 2003 | −253,991 | Not reported | 12 of 12 |
| 2004 | −215,196 | Not reported | 12 of 12 |
| 2005 | −237,594 | Not reported | 12 of 12 |
| 2006 | −1,014 | Not reported | 9 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | 403,397 | Not reported | 9 of 12 |
| 2011 | −131,471 | Not reported | 12 of 12 |
| 2012 | −104,109 | Not reported | 12 of 12 |
| 2013 | −102,571 | Not reported | 12 of 12 |
| 2014 | −135,904 | Not reported | 12 of 12 |
| 2015 | −71,811 | Not reported | 12 of 12 |
| 2016 | −152,879 | Not reported | 12 of 12 |
| 2017 | −147,606 | Not reported | 12 of 12 |
| 2018 | −121,335 | Not reported | 12 of 12 |
| 2019 | −19,611 | Not reported | 12 of 12 |
| 2020 | −93,662 | Not reported | 12 of 12 |
| 2021 | −86,065 | Not reported | 12 of 12 |
| 2022 | −147,865 | Not reported | 12 of 12 |
| 2023 | −129,965 | Not reported | 12 of 12 |
| 2024 | −132,980 | Not reported | 12 of 12 |
| 2025 | −159,810 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −73,182 | Not reported | 7 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 · MISOEmissions
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. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | 204.0 | December 1963 |
| 2 | Hydroelectric Pumped Storage | 204.0 | December 1963 |
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 Union Electric Co - (MO) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Taum Sauk
More plants operated by Union Electric Co - (MO)
Questions about Taum Sauk
How much power does Taum Sauk produce?
Taum Sauk reported −159,810 MWh (−160 GWh) of net generation in 2025. From January to July 2026 it reported −73.2 GWh, which is provisional.
Where is Taum Sauk?
Taum Sauk is in Reynolds County, Missouri, at 37.5208, −90.8347. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Taum Sauk?
EIA-860M for August 2026 lists Union Electric Co - (MO) as the operator (EIA operator ID 19436). The operator is not always the owner.
When did Taum Sauk start operating?
Its first generator began operating in December 1963, according to EIA-860M.
Does InfraMap have power prices for Taum Sauk?
Yes. InfraMap has MISO day-ahead and real-time prices at 2 price nodes linked to Taum Sauk, 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)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page