Walter Scott Jr Energy Center
MidAmerican Energy CoPottawattamie County
Walter Scott Jr Energy Center is a coal-fired generating station in Pottawattamie County, Iowa, associated with the MISO registry. The EIA plant baseline lists 1,648.3 MW of nameplate capacity. MidAmerican Energy says Unit 4 began operations in 2007. The page treats the plant-level EIA capacity and the company's unit-specific operating history as separate source-backed records.
Mapped infrastructure geometry associated with this asset.
EIA plant 1082 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 3 | Conventional Steam Coal | Operating | 725.8 | Unknown |
| 4 | Conventional Steam Coal | Operating | 922.5 | Unknown |
| 1 | Conventional Steam Coal | Retired | 49 | Unknown |
| 2 | Conventional Steam Coal | Retired | 81.6 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 49 MW 37.4 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Mar 1954 Retirement: Mar 2015 | Operating |
| 2 | 81.6 MW 80.8 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Oct 1958 Retirement: Mar 2015 | Operating |
| 3 | 725.8 MW 705.9 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Dec 1978 | Operating |
| 4 | 922.5 MW 805.8 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Jun 2007 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Walter Scott Jr Energy CenterCurrent | 1,648.3 MW | IA | |
| Louisa | 811.9 MW | IA | |
Project milestones and public references behind the asset profile.
EIA-860 lists generator 1 with this operating date.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator 2 with this operating date.
EIA-860 lists generator 3 with this operating date.
MidAmerican Energy says Unit 4 began operations in 2007.
EIA-860 lists generator 4 with this operating date.
EIA-860 lists a planned retirement for generator 1, generator 2.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Walter Scott Jr Energy Center reports 1,648.3 MW coal of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Walter Scott Jr Energy Center is a Conventional Steam Coal facility in Pottawattamie County, IA, participating in the MISO market.
Walter Scott Jr Energy Center is in Pottawattamie County, IA, inside the MISO balancing area.
Walter Scott Jr Energy Center is operated by MidAmerican Energy Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Walter Scott Jr Energy Center reported 7,306 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Walter Scott Jr Energy Center ranks #27 of 205 operating plants of the same technology nationally. It ranks #1 of 9 in IA.