Audrain Generating Station
Audrain County, Missouri · EIA plant ID 55234 · Operator: Union Electric Co - (MO)
Nameplate814MWSummer 600 MW
Generators8in service
Net generation403GWh12 mo to Dec 2025
Capacity factor8%gas/coal/oil units, summer MW
Heat rate12,218Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as peaking
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) |
|---|---|---|---|
| 2002 | 34.1 | 0.6% | 12,172 |
| 2003 | 0 | 0.0% | — |
| 2004 | 0 | 0.0% | — |
| 2005 | 31.5 | 0.6% | 12,119 |
| 2006 | 33.3 | 0.6% | 13,062 |
| 2007 | 66.7 | 1.3% | 12,703 |
| 2008 | 27.2 | 0.5% | 13,765 |
| 2009 | 25.1 | 0.5% | 16,432 |
| 2010 | 53.1 | 1.0% | 13,045 |
| 2011 | 97.8 | 1.9% | 12,587 |
| 2012 | 68.6 | 1.3% | 12,200 |
| 2013 | 23.1 | 0.4% | 12,386 |
| 2014 | 2.4 | 0.1% | 12,412 |
| 2015 | 1.9 | 0.0% | 16,713 |
| 2016 | 20 | 0.4% | 12,745 |
| 2017 | 33 | 0.6% | 12,284 |
| 2018 | 50.5 | 1.0% | 11,161 |
| 2019 | 18.7 | 0.4% | 12,066 |
| 2020 | 23.1 | 0.4% | 12,343 |
| 2021 | 42.1 | 0.8% | 12,446 |
| 2022 | 243.6 | 4.6% | 12,409 |
| 2023 | 196.2 | 3.7% | 12,539 |
| 2024 | 146.4 | 2.7% | 12,472 |
| 2025 | 402.8 | 7.7% | 12,218 |
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 |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Feb 2001 | Operating | — | coming soon |
| GT2 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Feb 2001 | Operating | — | coming soon |
| GT3 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Feb 2001 | Operating | — | coming soon |
| GT4 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Feb 2001 | Operating | — | coming soon |
| GT5 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Mar 2001 | Operating | — | coming soon |
| GT6 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Apr 2001 | Operating | — | coming soon |
| GT7 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Apr 2001 | Operating | — | coming soon |
| GT8 | Natural Gas Fired Combustion Turbine | GT | 101.8 | 75 | Apr 2001 | Operating | — | coming soon |
Owner / operator
Operator: Union Electric Co - (MO). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Union Electric Co - (MO) | 100.0% | 814 MW |
Nearby plants
Within 80 km.
| Huck Finn Renewable Energy Center | 200 MW | 0.7 km |
| Vandalia Renewable Energy Center | 50 MW | 5.1 km |
| Blue Jay Road Solar, LLC | — | 8 km |
| MJMEUC Generating Station #1 | 13 MW | 11 km |
| Clarence Cannon | 58 MW | 25.7 km |
| Peno Creek | 240 MW | 26.9 km |