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603 MW Conventional Steam Coal (494 MW) + Natural Gas Fired Combustion Turbine (109 MW) operating in Greene, MO — Southwest Power Pool
603 MW
Nameplate Capacity
4
Generators
units
Hybrid (2)
Technology
Conventional Steam Coal + Natural Gas Fired Combustion Turbine
1976
Operating Since
Coordinates
37.1472, -93.3898
County
Greene, MO
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City Utilities of Springfield - (MO) | City Utilities of Springfield - (MO) | — |
| Owner(s) | City Utilities of Springfield - (MO) | City Utilities of Springfield - (MO) | — |
| Status | Operating | — | — |
The John Twitty Energy Center is a 603 MW hybrid power plant located in Greene County, Missouri. It began operating in 1976 and is owned and operated by City Utilities of Springfield (MO). The plant utilizes both conventional steam coal and natural gas-fired combustion turbine technologies. It consists of 4 generators and its primary fuel source is natural gas.
The John Twitty Energy Center operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. In the state of Missouri, it is ranked as the 6th largest power plant out of 20, and nationally it is ranked 400th out of 945. The plant's latest annual generation was 2,064,209 MWh, achieving a capacity factor of 39.1%.
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
161.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
164.1K MWh
Latest Month
2.1M MWh
Annual Generation
39.1%
Capacity Factor
CO₂ Intensity
2160 lb/MWh
NOx
0.994 lb/MWh
SO₂
3 lb/MWh
CH₄
0.240 lb/MWh
N₂O
0.035 lb/MWh
Capacity Factor
36.8%
Annual Net Gen
1944 GWh
CO₂eq
2176 lb/MWh
Subregion
SPP South
2013
$965/kW
Est. Construction Cost
Total estimated cost: $582.0M
Point of Interconnection
Nearest Substation
Southwest Substation · 161 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
SPRM_SWPS2
Pricing Hub
SPP South Hub
Alt. Hub / Zone
SPP North Hub
Location Type
Settlement Location
Node Source
EIA-860 direct report
Last updated 2026-03-26
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