Clarence Cannon
Ralls County, Missouri · EIA plant ID 6140 · Operator: USCE-St Louis District
Nameplate58MWSummer 58 MW
Generators2in service
Net generation127GWh12 mo to Aug 2026
Capacity factor27%hydro units, summer MW
Heat rate—thermal plants only
First online1984
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 106.5 | 45.0% | — |
| 2002 | 88.4 | 17.5% | — |
| 2003 | 45.4 | 8.8% | — |
| 2004 | 107.3 | 22.3% | — |
| 2005 | 66.5 | 10.1% | — |
| 2006 | 22.3 | 4.4% | — |
| 2007 | 63.5 | 8.1% | — |
| 2008 | 173.4 | 33.9% | — |
| 2009 | 198.2 | 39.3% | — |
| 2010 | 152.7 | 26.7% | — |
| 2011 | 65.6 | 13.2% | — |
| 2012 | 24 | 4.9% | — |
| 2013 | 131.5 | 18.4% | — |
| 2014 | 84.8 | 12.2% | — |
| 2015 | 119.4 | 18.1% | — |
| 2016 | 85 | 16.4% | — |
| 2017 | 57.3 | 7.1% | — |
| 2018 | 47.9 | 8.3% | — |
| 2019 | 153.8 | 24.4% | — |
| 2020 | 105.5 | 12.9% | — |
| 2021 | 182.4 | 38.6% | — |
| 2022 | 143.6 | 30.3% | — |
| 2023 | 36.1 | 7.6% | — |
| 2024 | 97.7 | 20.6% | — |
| 2025 | 95.7 | 20.2% | — |
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 | Conventional Hydroelectric | HY | 27 | 27 | Nov 1984 | Operating | — | coming soon |
| 2 | Hydroelectric Pumped Storage | PS | 31 | 31 | Nov 1984 | Operating | — | coming soon |
Owner / operator
Operator: USCE-St Louis District. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| USCE-St Louis District | 100.0% | 58 MW |
Nearby plants
Within 80 km.
| Monroe (MO) | retired | 16.1 km |
| Blue Jay Road Solar, LLC | — | 18.7 km |
| Huck Finn Renewable Energy Center | 200 MW | 25 km |
| Audrain Generating Station | 814 MW | 25.7 km |
| Hannibal Energy Center | — | 27 km |
| Hannibal - Oakwood Substation | retired | 27.2 km |