Interstate Power and Light plants

Every generating plant EIA-860M files against Interstate Power and Light for 2026-07: 29 plants, 5 GW of nameplate capacity, across 1 state and 6 energy sources.

EIA files this entity as “Interstate Power and Light Co”.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants
29
Nameplate capacity
5 GW
States
1
IA
Energy sources
6

Interstate Power and Light plants by energy source

  • Battery2 plants · 8 MW
  • Coal1 plants · 726 MW
  • Natural gas5 plants · 1,990 MW
  • Petroleum1 plants · 90 MW
  • Solar13 plants · 521 MW
  • Wind7 plants · 1,302 MW

Full list of Interstate Power and Light plants

Power plants operated by Interstate Power and Light Co
OttumwaConventional Steam CoalInterstate Power and Light CoWapello725.911981Operating
Marshalltown Generating Station3 technologiesInterstate Power and Light CoMarshall708.852017Operating
Emery StationNatural Gas Fired Combined CycleInterstate Power and Light CoCerro Gordo602.832004Operating
Upland PrairieOnshore Wind TurbineInterstate Power and Light CoClay299.312019Operating
Burlington (IA)2 technologiesInterstate Power and Light CoDes Moines290.851968Operating
Wever Solar (150MW)2 technologiesInterstate Power and Light CoLee24922024Operating
Whispering Willow NorthOnshore Wind TurbineInterstate Power and Light CoFranklin201.312020Operating
Golden PlainsOnshore Wind TurbineInterstate Power and Light CoWinnebago199.812020Operating
Whispering Willow Wind Farm - EastOnshore Wind TurbineInterstate Power and Light CoFranklin199.712009Operating
Prairie Creek2 technologiesInterstate Power and Light CoLinn198.821958Operating
MarshalltownNatural Gas Fired Combustion TurbineInterstate Power and Light CoMarshall18931978Operating
English FarmsOnshore Wind TurbineInterstate Power and Light CoPoweshiek171.512019Operating
Pleasant Creek Unit 2Solar PhotovoltaicInterstate Power and Light CoLinn15012024Operating
Richland (IA)Onshore Wind TurbineInterstate Power and Light CoSac130.912020Operating
Franklin County Wind FarmOnshore Wind TurbineInterstate Power and Light CoFranklin9912012Operating
Lime CreekPetroleum LiquidsInterstate Power and Light CoCerro Gordo90.221991Operating
Pleasant Creek Unit 1Solar PhotovoltaicInterstate Power and Light CoLinn5012024Operating
Creston Solar (50 MW)Solar PhotovoltaicInterstate Power and Light CoUnion5012024Operating
Deer Run BatteryBatteriesInterstate Power and Light CoLinn512023Operating
Grinnell Customer Hosted SolarSolar PhotovoltaicInterstate Power and Light CoPoweshiek512025Operating
Cedar Rapids Community SolarSolar PhotovoltaicInterstate Power and Light CoLinn4.512024Operating
West Dubuque SolarSolar PhotovoltaicInterstate Power and Light CoDubuque3.812017Operating
Decorah BatteryBatteriesInterstate Power and Light CoWinneshiek2.512021Operating
Hy-Vee Customer Hosted 2.25MW SolarSolar PhotovoltaicInterstate Power and Light CoLucas2.312024Operating
ISU Customer Hosted 1MW Solar ProjectSolar PhotovoltaicInterstate Power and Light CoStory1.412024Operating
Creston School Customer Hosted SolarSolar PhotovoltaicInterstate Power and Light CoUnion1.412025Operating
Clinton SchoolsSolar PhotovoltaicInterstate Power and Light CoClinton1.312025Operating
Fareway Customer Hosted 1 MW SolarSolar PhotovoltaicInterstate Power and Light CoBoone112024Operating
Perry Customer Hosted 1MW Solar ProjectSolar PhotovoltaicInterstate Power and Light CoDallas112024Operating

Interstate Power and Light: FAQ

How many power plants does Interstate Power and Light operate?
EIA-860M lists 29 operating plants against “Interstate Power and Light Co” for 2026-07, totalling 5 GW of nameplate capacity in 1 state.
Is Interstate Power and Light the owner of these plants?
EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.
Why are affiliates listed separately?
Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.