Clarence Cannon
Pumped storage and hydro power plant in Ralls County, Missouri. 58 MW of nameplate capacity across 2 generators, operated by USCE-St Louis District.
Also known as Clarence Cannon Power Plant · EIA plant 6140
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 58 MWPumped storage 31.0 · Hydro 27.0
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- November 1984First generator online
- Operator
- USCE-St Louis DistrictEIA operator ID 26618
- Grid
- AECIBalancing authority AECI
- Price nodes
- None linkedNo verified ISO node
- Location
- Ralls County, MO39.5248, −91.6440
- EIA plant ID
- 6140EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Clarence Cannon produces
Free · EIA-923Net generation, 2025
95.7 GWh
95,698 MWh, final
Capacity factor, 2025
Not reported
2024: Not reported
January to July 2026
113 GWh
Provisional
Range, 2015 to 2025
36.1–182.4
GWh a year. Low 2023, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 106,496 | Not reported | 12 of 12 |
| 2002 | 88,413 | Not reported | 12 of 12 |
| 2003 | 45,433 | Not reported | 12 of 12 |
| 2004 | 107,273 | Not reported | 12 of 12 |
| 2005 | 66,502 | Not reported | 12 of 12 |
| 2006 | 22,284 | Not reported | 12 of 12 |
| 2007 | 63,520 | Not reported | 12 of 12 |
| 2008 | 173,431 | Not reported | 12 of 12 |
| 2009 | 198,163 | Not reported | 12 of 12 |
| 2010 | 152,706 | Not reported | 12 of 12 |
| 2011 | 65,555 | Not reported | 12 of 12 |
| 2012 | 23,999 | Not reported | 12 of 12 |
| 2013 | 131,456 | Not reported | 12 of 12 |
| 2014 | 84,772 | Not reported | 12 of 12 |
| 2015 | 119,387 | Not reported | 12 of 12 |
| 2016 | 85,000 | Not reported | 12 of 12 |
| 2017 | 57,314 | Not reported | 12 of 12 |
| 2018 | 47,860 | Not reported | 12 of 12 |
| 2019 | 153,782 | Not reported | 12 of 12 |
| 2020 | 105,549 | Not reported | 12 of 12 |
| 2021 | 182,416 | Not reported | 12 of 12 |
| 2022 | 143,552 | Not reported | 12 of 12 |
| 2023 | 36,142 | Not reported | 12 of 12 |
| 2024 | 97,716 | Not reported | 12 of 12 |
| 2025 | 95,698 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | 112,948 | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 | Conventional Hydroelectric | 27.0 | November 1984 |
| 2 | Hydroelectric Pumped Storage | 31.0 | November 1984 |
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 USCE-St Louis District 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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Questions about Clarence Cannon
How much power does Clarence Cannon produce?
Clarence Cannon reported 95,698 MWh (95.7 GWh) of net generation in 2025. From January to July 2026 it reported 113 GWh, which is provisional.
Where is Clarence Cannon?
Clarence Cannon is in Ralls County, Missouri, at 39.5248, −91.6440. It is in the Associated Electric Cooperative, Inc. balancing area (AECI).
Who operates Clarence Cannon?
EIA-860M for August 2026 lists USCE-St Louis District as the operator (EIA operator ID 26618). The operator is not always the owner.
Is Clarence Cannon a pumped storage or a hydro plant?
Both. Pumped storage capacity totals 31 MW and hydro capacity totals 27 MW.
When did Clarence Cannon start operating?
Its first generator began operating in November 1984, according to EIA-860M.
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)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page