United States · 38.759, -91.779Callaway
Callaway, nuclear power plant in United States, operates one pressurized water reactor with 1,215 MW net installed capacity and has been in service since 1984.
Unit Callaway 1 has been operating for 42 years, since 1984. Its 1,215 MW net are enough to supply about 3,830,000 households.
- Country
- United States
- Units
- 1
- Technology
- PWR
- Net capacity
- 1,215 MWe
- First grid connection
- 1984
- Operator
- Ameren UE; Union Electric
- Owner
- Ameren UE; Union Electric Co
- Status
- Operating
See also: alerts for this plant · every plant in United States · Nuclear power plants in Missouri · Vendor: Westinghouse · every PWR reactor · how a PWR works
Operating capacity
1,215 MWe
net electrical
Units
1
1 operating
First start-up
1984
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Licence until | Load factor |
|---|---|---|---|---|---|---|---|---|---|---|
| Callaway 1 | Pressurized water (PWR) | Westinghouse 4-loop (WH 4LP) | Operating | 1,215 | 3,565 | Sep 1, 1975 | Oct 24, 1984 | — | Oct 18, 2044 | 98.7 % (2024) |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Callaway 1, a 1,215 MWe PWR (Westinghouse 4-loop (WH 4LP)), started construction in 1975, was connected to the grid in 1984 and is still operating, with a 98.7% load factor in 2024.
Operator: Ameren UE; Union Electric.
Owner: Ameren UE; Union Electric Co.