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198.8 MW Conventional Steam Coal (50 MW) + Natural Gas Steam Turbine (149 MW) operating in Linn, IA
198.8 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Conventional Steam Coal + Natural Gas Steam Turbine
1958
Operating Since
Coordinates
41.9440, -91.6392
County
Linn, IA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Interstate Power and Light Co | Interstate Power and Light | — |
| Owner(s) | Interstate Power and Light Co | Alliant Energy | — |
| Status | Operating | — | — |
Prairie Creek is a 213.4 MW hybrid power plant located in Linn County, Iowa. The plant began operating in 1958 and is owned by Alliant Energy and operated by Interstate Power and Light Co. The primary fuel source is subbituminous coal (SUB), and the plant utilizes both conventional steam coal and natural gas steam turbine technologies. It has three generators.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region. In the most recent year with available data, Prairie Creek generated 97,236 MWh, resulting in a capacity factor of 5.2%. The installed cost per kilowatt was $1,174.52, according to FERC data. Prairie Creek is ranked as the 8th largest of 9 power plants in Iowa, and 69th of 75 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
115.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
7.4K MWh
Latest Month
97.2K MWh
Annual Generation
5.2%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
2394 lb/MWh
NOx
4 lb/MWh
SO₂
6 lb/MWh
CH₄
0.124 lb/MWh
N₂O
0.018 lb/MWh
Capacity Factor
4.4%
Annual Net Gen
82 GWh
CO₂eq
2402 lb/MWh
Subregion
MRO West
Steam turbine · Interstate Power and Light Company · Data from 2015–2016
$1,171/kW
Installed Cost
$-3/kW
Annual CapEx
$0.0/MWh
Operating Cost
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Point of Interconnection
Nearest Substation
Prairie Creek Generating Station · 115 kV
Substation Distance
< 10 km
Operator
ITC
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
ALTW.PRARC4
Pricing Hub
MINN.HUB
Alt. Hub / Zone
ILLINOIS.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-14
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