Quad Cities Generating Station
Quad Cities Generating Station is a nuclear plant in Rock Island County, Illinois, operated by Constellation Nuclear. It ranks fourth by nameplate capacity among Illinois’s 601 power plants. Counting by its oldest working unit (1972), it is the ninth-oldest of the 56 nuclear plants still running in the United States. Its oldest working unit dates from 1972, the second-earliest start among Illinois’s 6 nuclear plants.
Nameplate capacity, 2025
2,019 MW
1,819 MW net summer capacity
2 operable units
- Nuclear2,019 MW100%
Unit by unit, 1972 to 2025
operating in 2025bar height follows unit size
Unit 1 Nuclear, 1,009 MW, 1972
Unit 2 Nuclear, 1,009 MW, 1972
Among Illinois’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Braidwood Generation Station2,450 MW
- 2Byron Generating Station2,450 MW
- 3LaSalle Generating Station2,340 MW
- 4Dresden Generating Station2,019 MW
- 5Quad Cities Generating Stationthis plant
- 6Powerton1,786 MW
- 7Prairie State Generating Station1,766 MW
Other rankings
- All US power plants
- 68th of 14,286
- US nuclear plants
- 23rd of 56
- Nuclear plants in Illinois
- 4th of 6
- Plants in the PJM Interconnection balancing area
- 15th of 2,049
- Plants run by Constellation Nuclear
- 6th of 13
- Biggest single unit, among Illinois’s plants
- 5th of 601
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 1,009 MW | 908 MW | 1972 | Operating |
| 2 | Nuclear | 1,009 MW | 911 MW | 1972 | Operating |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| Constellation Nuclear | 75.0% |
| MidAmerican Energy Co | 25.0% |
Grid and site
- Balancing area
- PJM Interconnection
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 345 kV
- Water source
- Mississippi River
- Nearest town on record
- Cordova
- Operator type
- Independent producer
- Coordinates
- 41.726°N, 90.310°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Cordova Energy | Natural gas | 611 MW | 1.8 mi southeast |
| Clinton Schools | Solar | 1.3 MW | 8.3 mi northeast |
| Archer Daniels Midland Clinton | Coal | 180 MW | 8.3 mi northeast |
| USS Origami Solar | Solar | 4.3 MW | 11.3 mi northeast |
| Cattail (CSG) | Solar | 2 MW | 11.4 mi northeast |
| Whiteside Solar 1 CSG | Solar | 2 MW | 11.9 mi northeast |
| USS Cattail Solar | Solar | 2.3 MW | 13.3 mi northeast |
| Abel Solar | Solar | 2 MW | 15.1 mi east |