Owner · Company
Interstate Power and Light Co
Interstate Power and Light Co is linked to 4 power plants in the United States: it owns 4 (527 MW net) and operates 3. It is a subsidiary of Alliant Energy.
Portfolio
The 4 assets and rights Interstate Power and Light Co owns, operates or holds, by class, with its role in each, across its 2 records. Sizes are the whole asset's; net figures are its recorded share of each, added up over the assets with a share.
- Power plants4 · 527 MW net (2 with a share)
Power plants 4 · 527 MW net (2 with a share)
| Power plant | Location | Role | Capacity, whole asset | Net of its share |
|---|---|---|---|---|
| Ottumwa | Iowa, United States | Operator, Owner 48% | 726 MW | 348 MW |
| Marshalltown Generating Station | Iowa, United States | Operator, Owner | 709 MW | — |
| George Neal South | Iowa, United States | Owner 25.7% | 696 MW | 179 MW |
| Emery Station | Iowa, United States | Operator, Owner | 603 MW | — |
By country
Where the assets and rights are.
- The United States4 power plants
Group
Parent companies
From Interstate Power and Light Co up to its ultimate parent in the data.
- Interstate Power and Light Co
- Alliant Energy
Partners and counterparties
Owners, operators and grid operators on the same assets.
- MidAmerican Energy Co2 shared
- Bancroft Municipal Utilities - (IA)1 shared
- Cedar Falls Utilities1 shared
- City of Algona - (IA)1 shared
- City of Coon Rapids -(IA)1 shared
- City of Graettinger - (IA)1 shared
- City of Laurens - (IA)1 shared
- City of Milford - (IA)1 shared
- City of Spencer - (IA)1 shared
- City of Webster City - (IA)1 shared
- Corn Belt Power Coop1 shared
- Grundy Center Mun Light & Power1 shared
Facts
| Fact | Value | Source |
|---|---|---|
| Location | United States | GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026 |
| LEI | EF9UQIIO4KY2BWOK3P26 | Rare Context entity resolution · record · CC0 1.0 · checked 24 Oct 2026 |
| LEI | EF9UQIIO4KY2BWOK3P26 | GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026 |
| Company number | 20559 | GLEIF LEI · record · CC0 1.0 · checked 24 Oct 2026 |
Also recorded as
Sources name Interstate Power and Light Co under 2 records; this page joins them. Links to any of them lead here.
| Name in the source | Identifier | Source |
|---|---|---|
| Interstate Power and Light Co | party:eia-utility:9417 | EIA-860 / 860M / 923 |
| INTERSTATE POWER AND LIGHT COMPANY | party:lei:EF9UQIIO4KY2BWOK3P26 | GLEIF LEI |
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Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- GLEIF LEI. GLEIF LEI, CC0 1.0.
- Rare Context entity resolution. Rare Context entity resolution, CC0 1.0.