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1648.3 MW Sub. Coal operating in Pottawattamie, IA
1,648.3 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1978
Operating Since
Coordinates
41.1800, -95.8408
County
Pottawattamie, IA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MidAmerican Energy Co | — | — |
| Owner(s) | Atlantic Municipal Utilities, Cedar Falls Utilities, Central Iowa Power Cooperative, City of Alta - (IA), City of New Hampton - (IA), City of Spencer - (IA), City of Sumner - (IA), City of West Bend, Corn Belt Power Coop, Eldridge City Utilities, Lincoln Electric System, MidAmerican Energy Co, Municipal Energy Agency of NE, Town of Montezuma - (IN), Waverly Municipal Elec Utility | — | — |
| Status | Operating | — | — |
The Walter Scott Jr Energy Center is a 1648.3 MW coal-fired power plant located in Pottawattamie County, Iowa. It began operating in 1978 and is owned and operated by MidAmerican Energy Co. The plant utilizes conventional steam coal technology and subbituminous coal (SUB) as its primary fuel source. It consists of two generating units.
The Walter Scott Jr Energy Center operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the MRO NERC region. In the most recent year with available data, the plant generated 5,979,018 MWh of electricity, achieving a capacity factor of 41.4%. It is the largest of 9 coal plants in Iowa, and ranks 17th out of 75 coal plants 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
345.0 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.
646.5K MWh
Latest Month
6.0M MWh
Annual Generation
41.4%
Capacity Factor
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CO₂ Intensity
2137 lb/MWh
NOx
1 lb/MWh
SO₂
2 lb/MWh
CH₄
0.240 lb/MWh
N₂O
0.035 lb/MWh
Capacity Factor
39.5%
Annual Net Gen
5700 GWh
CO₂eq
2153 lb/MWh
Subregion
MRO West
No financial data available for this plant.
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Market Position
ISO/RTO Market
MISO
LMP Node
MEC.WSEC4
Pricing Hub
MINN.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 2026-03-26
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