Callaway
Callaway County, Missouri · EIA plant ID 6153 · Operator: Union Electric Co - (MO)
Nameplate1,236MWSummer 1,190 MW
Generators1in service
Net generation10,084GWh12 mo to Aug 2026
Capacity factor97%nuclear 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), nuclear 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 | 8,384.2 | 83.7% | — |
| 2002 | 8,389.6 | 83.8% | — |
| 2003 | 9,699.6 | 97.4% | — |
| 2004 | 7,830.7 | 78.4% | — |
| 2005 | 8,030.6 | 77.0% | — |
| 2006 | 10,116.7 | 97.0% | — |
| 2007 | 9,372 | 89.9% | — |
| 2008 | 9,378.6 | 89.7% | — |
| 2009 | 10,247.1 | 98.3% | — |
| 2010 | 8,996 | 86.3% | — |
| 2011 | 9,371.3 | 89.9% | — |
| 2012 | 10,718.3 | 102.5% | — |
| 2013 | 8,367.1 | 80.0% | — |
| 2014 | 9,276.4 | 88.8% | — |
| 2015 | 10,440.1 | 100.2% | — |
| 2016 | 9,430.2 | 90.2% | — |
| 2017 | 8,304.1 | 79.7% | — |
| 2018 | 10,655.3 | 102.2% | — |
| 2019 | 9,189.9 | 88.2% | — |
| 2020 | 7,742.1 | 70.7% | — |
| 2021 | 4,292.4 | 39.3% | — |
| 2022 | 8,874.8 | 85.1% | — |
| 2023 | 9,179.7 | 88.1% | — |
| 2024 | 10,525.8 | 100.7% | — |
| 2025 | 7,116.2 | 68.3% | — |
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 | Nuclear | ST | 1,235.8 | 1,190 | Dec 1984 | 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% | 1,236 MW |
Nearby plants
Within 80 km.
| Fulton Energy Center | — | 19 km |
| Fulton (MO) | 33 MW | 19 km |
| Show Me State Solar | — | 26.5 km |
| Ameresco Jefferson City | 3 MW | 32.6 km |
| Montgomery County Community Solar Center | 6 MW | 34.1 km |
| New Florence Renewable Energy Center | — | 34.5 km |