Nuclear power plants in Illinois
Illinois has 6 operating nuclear power plants with 12 GW of capacity.
- Operating6
Under 250 MW250–999 MW1 GW and up
Updated monthly. Last updated November 2026.
The largest nuclear power plants in Illinois
Operating, by capacity
| # | Nuclear power plant | Year online | Capacity |
|---|---|---|---|
| 1 | Braidwood Generation Station | 1988 | 2,450 MW |
| 2 | Byron Generating Station | 1987 | 2,450 MW |
| 3 | LaSalle Generating Station | 1984 | 2,340 MW |
| 4 | Dresden Generating Station | 1971 | 2,019 MW |
| 5 | Quad Cities Generating Station | 1972 | 2,019 MW |
| 6 | Clinton Power Station | 1987 | 1,138 MW |
Nuclear power plants that came online most recently in Illinois
Newest first
| # | Nuclear power plant | Year online | Capacity |
|---|---|---|---|
| 1 | Braidwood Generation Station | 1988 | 2,450 MW |
| 2 | Clinton Power Station | 1987 | 1,138 MW |
| 3 | Byron Generating Station | 1987 | 2,450 MW |
| 4 | LaSalle Generating Station | 1984 | 2,340 MW |
| 5 | Quad Cities Generating Station | 1972 | 2,019 MW |
| 6 | Dresden Generating Station | 1971 | 2,019 MW |
The developer behind each project is on paid plans. See plans
How Cleanview tracks nuclear power plants
Operating nuclear power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.
Questions about nuclear power plants in Illinois
- How many nuclear power plants are in Illinois?
- Illinois has 6 operating utility-scale nuclear power plants with 12 GW of capacity, according to the EIA's monthly survey of power plants.
- What is the largest nuclear power plant in Illinois?
- Braidwood Generation Station in Will County, Illinois is the largest, at 2,450 MW. It came online in 1988.
- How many nuclear power plants were built in Illinois in 2025?
- 0 nuclear power plants came online in Illinois in 2025, with 0 MW of capacity.
- Who is developing nuclear power plants in Illinois?
- Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.
More energy trackers for Illinois
Nuclear power plants in other states
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