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State Line Combined Cycle

Jasper County, Missouri · EIA plant ID 7296 · Operator: Empire District Electric Co
Natural gasNatural Gas Fired Combined CycleNatural Gas Fired Combustion Turbine⛽ Dual-fuelSPPBA: SWPP
Nameplate691MWSummer 627 MW
Generators4in service
Net generation2,282GWh12 mo to Aug 2026
Capacity factor42%gas/coal/oil units, summer MW
Heat rate7,359Btu/kWhfossil units, electric fuel, HHV
First online1995Runs as baseload

The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
-1000100200300GWh2001200320052007200920112013201520172019202120232025

Capacity factor by year

Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
0%20%40%2005201020152020202541.5% · 12 mo

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
7,2007,4007,600200520102015202020257,359 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
2001654——
20021,359——
2003936.418.1%7,737
20041,164.822.5%7,603
20051,909.237.0%7,396
20061,507.229.2%7,473
20071,979.338.4%7,367
20082,177.641.6%7,327
20091,077.320.6%7,420
20101,831.735.1%7,349
20111,926.937.4%7,369
20121,937.737.5%7,267
20132,058.239.9%7,492
20141,714.333.2%7,546
20151,805.535.0%7,441
20162,308.644.6%7,415
20172,450.847.5%7,448
20182,676.951.9%7,388
20192,738.553.1%7,513
20202,62450.7%7,442
20211,946.535.3%7,689
20222,370.743.0%7,672
20232,305.742.4%7,401
20242,311.142.2%7,602
20252,453.144.6%7,413

Fuel capability

Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo101,371 MMBtu
Last month with liquid burnApr 2026
Switch while operatingYes
Net summer MW on gas89
Net summer MW on oil89
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)

Generators

EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
Gen IDTechnologyPrime moverNameplate MWSummer MWOnlineStatusPlanned retirementOEM / model
1Natural Gas Fired Combustion TurbineGT12389May 1995Operating—coming soon
2-1Natural Gas Fired Combined CycleCT181172.3Jun 2001Operating—coming soon
2-2Natural Gas Fired Combined CycleCT180175Jun 1997Operating—coming soon
2-3Natural Gas Fired Combined CycleCA206.5191Jun 2001Operating—coming soon

Owner / operator

Operator: Empire District Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Empire District Electric Co67.1%464 MW
Evergy Kansas Central, Inc32.9%227 MW

Nearby plants

Within 80 km.
Riverton268 MW7.6 km
Prosperity Solar Farm CSG2 MW17.4 km
Carthage42 MW30.5 km
Foxtrot Solar Energy LLC—31.8 km
Asburyretired32.9 km
North Fork Ridge Wind Energy Center149 MW37.2 km