Stillwater Energy Center
Natural gas power plant · Payne County, Oklahoma
Nameplate capacity
56 MW
Rank in Oklahoma
#114
of 147 plants
In service since
2016
July 2016
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Internal Combustion Engine
- Operator
- Stillwater Utilities Authority
- County
- Payne County
- Generating units
- 3
- Share of state capacity
- 0.15%
- Rank among natural gas plants in Oklahoma
- #25 of 33
- EIA plant code
- 59647
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | 19 MW | 19 MW | 2016 | Operating |
| 2 | Natural Gas Internal Combustion Engine | 19 MW | 19 MW | 2016 | Operating |
| 3 | Natural Gas Internal Combustion Engine | 19 MW | 19 MW | 2016 | 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
| Minco II Energy Storage | Battery storage | 65 MW |
| NextEra-Blackwell Wind, LLC | Wind | 60 MW |
| Twelvemile Solar 2 | Solar | 52 MW |
| Fort Gibson | Hydro | 45 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 56 MW solar plant and a 56 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