Thomas Hill
Thomas Hill is a coal plant in Randolph County, Missouri, operated by Associated Electric Coop, Inc. It ranks fifth by nameplate capacity among Missouri’s 137 power plants. Its oldest working unit dates from 1966, earlier than at any other coal plant in Missouri. Within the Associated Electric Cooperative balancing area it is the second-largest of 34 plants. Its biggest unit, rated at 738 MW, is the third-largest single generator in Missouri.
Nameplate capacity, 2025
1,182 MW
1,130 MW net summer capacity
3 operable units
- Coal steam1,182 MW100%
Unit by unit, 1966 to 2025
operating in 2025bar height follows unit size
Unit 1 Coal steam, 172 MW, 1966
Unit 2 Coal steam, 272 MW, 1969
Unit 3 Coal steam, 738 MW, 1982
Among Missouri’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Labadie2,389 MW
- 2Iatan1,754 MW
- 3New Madrid1,300 MW
- 4Callaway1,236 MW
- 5Thomas Hillthis plant
- 6Sioux1,099 MW
- 7Hawthorn1,046 MW
Other rankings
- All US power plants
- 233rd of 14,286
- US coal plants
- 69th of 195
- Coal plants in Missouri
- 4th of 8
- Plants run by Associated Electric Coop, Inc
- 2nd of 9
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Coal steam | 172 MW | 164 MW | 1966 | Operating |
| 2 | Coal steam | 272 MW | 263 MW | 1969 | Operating |
| 3 | Coal steam | 738 MW | 703 MW | 1982 | Operating |
Grid and site
- Balancing area
- Associated Electric Cooperative
- Reliability region
- SERC Reliability Corporation
- Highest grid connection voltage
- 345 kV
- Water source
- Thomas Hill Lake
- Nearest town on record
- Clifton Hill
- Operator type
- Utility
- Coordinates
- 39.552°N, 92.638°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Moberly | Oil and petroleum | 60.6 MW | 12.1 mi southeast |
| Salisbury City of | Oil and petroleum | 6.4 MW | 12.5 mi southwest |
| Macon | Oil and petroleum | 1 MW | 15.7 mi northeast |
| Macon Solar Power Project | Solar | 2.8 MW | 17.2 mi northeast |
| Macon Energy Center | Natural gas | 10 MW | 19.2 mi northeast |
| Marceline | Oil and petroleum | 8 MW | 19.9 mi northwest |
| Fayette | Oil and petroleum | 10.9 MW | 28.5 mi south |
| Altona Solar, LLC | Solar | 30 MW | 32.3 mi southeast |