Green Country Power Station
Natural gas power plant · Tulsa County, Oklahoma
Nameplate capacity
904 MW
Rank in Oklahoma
#12
of 147 plants
In service since
2002
February 2002
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Public Service Co of Oklahoma
- County
- Tulsa County
- Generating units
- 6
- Share of state capacity
- 2.48%
- Rank among natural gas plants in Oklahoma
- #9 of 33
- EIA plant code
- 55146
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 179 MW | 155 MW | 2002 | Operating |
| CTG2 | Natural Gas Fired Combined Cycle | 179 MW | 155 MW | 2002 | Operating |
| CTG3 | Natural Gas Fired Combined Cycle | 179 MW | 155 MW | 2002 | Operating |
| STG1 | Natural Gas Fired Combined Cycle | 122 MW | 106 MW | 2002 | Operating |
| STG2 | Natural Gas Fired Combined Cycle | 122 MW | 106 MW | 2002 | Operating |
| STG3 | Natural Gas Fired Combined Cycle | 122 MW | 106 MW | 2002 | 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
| Chouteau | Natural gas | 1,070 MW |
| Traverse Wind Project, LLC | Wind | 999 MW |
| Skeleton Creek Energy Center Hybrid | Battery storage | 752 MW |
| Southwestern | Natural gas | 658 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 904 MW solar plant and a 904 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