Monticello Nuclear Facility
Monticello Nuclear Facility is a nuclear plant in Wright County, Minnesota, operated by Northern States Power Co - Minnesota. It ranks fifth by nameplate capacity among Minnesota’s 792 power plants. Counting by its oldest working unit (1971), it is the sixth-oldest of the 56 nuclear plants still running in the United States. The operator has reported planned retirement dates for 685 MW of it, in 2030. Its biggest unit, rated at 685 MW, is the second-largest single generator in Minnesota.
Nameplate capacity, 2025
685 MW
617 MW net summer capacity
1 operable unit
- Nuclear685 MW100%
Unit by unit, 1971 to 2025
operating in 2025reported planned retirementbar height follows unit size
Unit 1 Nuclear, 685 MW, 1971
Among Minnesota’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Sherburne County1,704 MW
- 2Prairie Island1,186 MW
- 3Clay Boswell923 MW
- 4Mankato Energy Center741 MW
- 5Monticello Nuclear Facilitythis plant
- 6High Bridge644 MW
- 7Allen S King598 MW
Other rankings
- All US power plants
- 512th of 14,286
- US nuclear plants
- 55th of 56
- Nuclear plants in Minnesota
- 2nd of 2
- Plants in the MISO (Midcontinent) balancing area
- 76th of 2,383
- Plants run by Northern States Power Co - Minnesota
- 3rd of 51
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Nuclear | 685 MW | 617 MW | 1971 | Operating, retirement planned for 2030 |
Grid and site
- Balancing area
- MISO (Midcontinent)
- Reliability region
- Midwest Reliability Organization
- Highest grid connection voltage
- 345 kV
- Water source
- Mississippi River
- Nearest town on record
- Monticello
- Operator type
- Utility
- Coordinates
- 45.334°N, 93.849°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Sherco Solar II | Solar | 237 MW | 2.8 mi north |
| Big Lake Project CSG | Solar | 5 MW | 2.8 mi east |
| Big Lake Holdco Solar CSG | Solar | 5 MW | 3.6 mi east |
| Sherburne County | Coal | 1,704 MW | 3.9 mi northwest |
| USS Big Lake 1 Solar CSG | Solar | 1 MW | 4.3 mi east |
| SolarClub 10 LLC | Solar | 1 MW | 4.3 mi south |
| Monticello Project CSG | Solar | 5 MW | 4.4 mi south |
| USS Quail Solar LLC | Solar | 1 MW | 5.8 mi southeast |