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Earl F Wisdom

Clay County, Iowa · EIA plant ID 1217 · Operator: Corn Belt Power Coop
Natural gasNatural Gas Fired Combustion TurbineNatural Gas Steam Turbine⛽ Dual-fuelMISOBA: SWPP
Nameplate119MWSummer 114 MW
Generators2in service
Net generation4GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate22,591Btu/kWhfossil units, electric fuel, HHV
First online1960Runs as rarely runs

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
-505101520GWh2001200320052007200920112013201520172019202120232025

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%10%20%200520102015202020250.4% · 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.
10,00015,00020,00025,0002005201020152020202522,591 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
200136.3——
200219.9——
20037322.2%12,590
200473.88.9%12,903
200514414.5%12,689
200659.25.9%13,100
200774.97.5%13,485
2008828.2%13,326
20094.70.5%18,223
2010272.7%13,224
201121.72.2%13,960
201210.31.0%15,018
201374.47.5%12,902
201414.31.4%15,258
20153.20.3%20,417
201615.61.6%15,768
20179.10.9%16,586
201821.92.2%15,000
201920.52.1%14,947
2020212.1%15,522
202110.31.0%16,161
20222.20.2%26,202
20235.70.6%18,326
20247.10.7%18,638
20254.10.4%22,591

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 mo3,024 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas74
Net summer MW on oil76
Time gas → oilup to 6 h (EIA 6H)
Time oil → gasup to 6 h (EIA 6H)

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 Steam TurbineST37.537.5Apr 1960Operating—coming soon
2Natural Gas Fired Combustion TurbineGT81.676Apr 2004Operating—coming soon

Owner / operator

Operator: Corn Belt Power Coop. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Corn Belt Power Coop65.7%78 MW
Basin Electric Power Coop34.3%41 MW

Nearby plants

Within 80 km.
Upland Prairie299 MW9.1 km
Spencer Gas Turbine24 MW9.3 km
Milford7 MW20.4 km
Lost Lakes Wind Farm LLC100 MW21.3 km
Flying Cloud Power Partners LLC44 MW25.7 km
Crosswind Energy Project21 MW29.9 km