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903.9 MW Natural Gas operating in Tulsa, OK — Southwest Power Pool
903.9 MW
Nameplate Capacity
6
Generators
units
Natural Gas Fired Combined Cycle
Technology
2002
Operating Since
Coordinates
35.9833, -95.9346
County
Tulsa, OK
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Public Service Co of Oklahoma | Public Service Company of Oklahoma | — |
| Owner(s) | Green Country OP Services LLC | American Electric Power Company | — |
| Status | Operating | — | — |
Green Country Energy LLC is a 903.9 MW natural gas-fired combined cycle power plant located in Tulsa County, Oklahoma. The plant began operating in 2002 and consists of 6 generators. It is owned and operated by Green Country OP Services LLC. The plant is connected to the Southwest Power Pool (SPP) balancing authority and resides within the Midwest Reliability Organization (MRO) NERC region.
In the most recent year of reported data, Green Country Energy generated 3,651,548 MWh of electricity, achieving a capacity factor of 46.1%. The plant ranks as the 11th largest in Oklahoma out of 26 total plants, and it holds the 202nd position nationally among 945 power plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Southwest Power Pool (SWPP)
Grid Voltage
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Investor-Owned Utility
Sector
IPP Non-CHP
321.5K MWh
Latest Month
3.7M MWh
Annual Generation
46.1%
Capacity Factor
CO₂ Intensity
863 lb/MWh
NOx
0.233 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.016 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
48.7%
Annual Net Gen
3854 GWh
CO₂eq
863 lb/MWh
Subregion
SPP South
2013
$965/kW
Est. Construction Cost
Total estimated cost: $872.4M
Point of Interconnection
Nearest Substation
Green Country Substation
Substation Distance
0 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
CSWS.TNSK.GREENCOUNTRY
Pricing Hub
SPP South Hub
Location Type
Settlement Location
Node Source
Curated node match
Last updated 2026-03-14
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