Callaway
Nuclear power plant in Callaway County, Missouri. 1,235.8 MW of nameplate capacity across 1 generator, operated by Union Electric Co - (MO).
Also known as Callaway Energy Center · EIA plant 6153
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1,235.8 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 1984First generator online
- Operator
- Union Electric Co - (MO)EIA operator ID 19436
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 MISO nodeResource nodes with prices
- Location
- Callaway County, MO38.7589, −91.7788
- EIA plant ID
- 6153EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Callaway produces
Free · EIA-923Net generation, 2025
7.12 TWh
7,116,161 MWh, final
Capacity factor, 2025
65.7%
2024: 97.0%
January to July 2026
6.21 TWh
Provisional
Range, 2015 to 2025
4.3–10.7
TWh a year. Low 2021, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 9,991,845 | Not reported | 12 of 12 |
| 2001 | 8,384,240 | Not reported | 12 of 12 |
| 2002 | 8,389,629 | Not reported | 12 of 12 |
| 2003 | 9,699,589 | Not reported | 12 of 12 |
| 2004 | 7,830,693 | Not reported | 12 of 12 |
| 2005 | 8,030,577 | Not reported | 12 of 12 |
| 2006 | 10,116,660 | Not reported | 12 of 12 |
| 2007 | 9,371,955 | Not reported | 12 of 12 |
| 2008 | 9,378,629 | Not reported | 12 of 12 |
| 2009 | 10,247,116 | Not reported | 12 of 12 |
| 2010 | 8,996,033 | 83.1% | 12 of 12 |
| 2011 | 9,371,323 | 86.6% | 12 of 12 |
| 2012 | 10,718,329 | 98.7% | 12 of 12 |
| 2013 | 8,367,103 | 77.3% | 12 of 12 |
| 2014 | 9,276,356 | 85.7% | 12 of 12 |
| 2015 | 10,440,082 | 96.4% | 12 of 12 |
| 2016 | 9,430,179 | 86.9% | 12 of 12 |
| 2017 | 8,304,127 | 76.7% | 12 of 12 |
| 2018 | 10,655,279 | 98.4% | 12 of 12 |
| 2019 | 9,189,863 | 84.9% | 12 of 12 |
| 2020 | 7,742,120 | 71.3% | 12 of 12 |
| 2021 | 4,292,433 | 39.7% | 12 of 12 |
| 2022 | 8,874,769 | 82.0% | 12 of 12 |
| 2023 | 9,179,744 | 84.8% | 12 of 12 |
| 2024 | 10,525,784 | 97.0% | 12 of 12 |
| 2025 | 7,116,161 | 65.7% | 12 of 12 |
| 2026 (provisional, partial year) | 6,207,112 | 98.7% | 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, USGSWithdrawal, 2024
9,592
million gallons
Consumption, 2024
6,631
million gallons
Source
Missouri River
Surface, Fresh. Natural-draft tower
Watershed stress
Low · 0.288
USGS SUI, HUC12 Logan Creek
12 of 12 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Nuclear | 1,235.8 | December 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 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.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Callaway
More plants operated by Union Electric Co - (MO)
Questions about Callaway
How much power does Callaway produce?
Callaway reported 7,116,161 MWh (7.12 TWh) of net generation in 2025, a 65.7% capacity factor on 1,235.8 MW of nameplate capacity. From January to July 2026 it reported 6.21 TWh, which is provisional.
Where is Callaway?
Callaway is in Callaway County, Missouri, at 38.7589, −91.7788. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Callaway?
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 Callaway start operating?
Its first generator began operating in December 1984, according to EIA-860M.
Does InfraMap have power prices for Callaway?
Yes. InfraMap has MISO day-ahead and real-time prices at 1 price node linked to Callaway, 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
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page