Nameplate capacity
1,194 MW
Rank in Oklahoma
#7
of 147 plants
In service since
1985
October 1985
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Grand River Dam Authority
- County
- Mayes County
- Generating units
- 3
- Share of state capacity
- 3.28%
- Rank among coal plants in Oklahoma
- #1 of 4
- EIA plant code
- 165
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 2 | Conventional Steam Coal | 594 MW | 479 MW | 1985 | Operating |
| 3CT | Natural Gas Fired Combined Cycle | 369 MW | 310 MW | 2017 | Operating |
| 3ST | Natural Gas Fired Combined Cycle | 231 MW | 171 MW | 2017 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Oklahoma
| Kiamichi Energy Facility | Natural gas | 1,370 MW |
| Oneta Energy Center | Natural gas | 1,214 MW |
| Sooner | Coal | 1,138 MW |
| Riverside (OK) | Natural gas | 1,122 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1,194 MW solar plant and a 1,194 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Oklahoma power plants · What Oklahoma actually generates