Power plant · Iowa, United States
Marshalltown Generating Station
Marshalltown Generating Station is a power plant in Iowa, United States, with 709 MW of capacity, owned by Interstate Power and Light Co.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Iowa | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Operating | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 2017 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Interstate Power and Light Co | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Interstate Power and Light Co | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 709 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Natural Gas Fired Combined Cycle | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 42.0433, -92.8728 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Research on this power plant and its owner.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the owner.
Request researchHow it compares
Marshalltown Generating Station is the 4th-largest of 11 power plants in Iowa and the 477th-largest of 800 in the United States by capacity; its 709 MW is <0.1% of the 839,036 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Iowa | 4th of 11 | 7,841 MW | 9% |
| United States | 477th of 800 | 839,036 MW | <0.1% |
| All power plants in our data | 550th of 12,032 | 1,190,447 MW | <0.1% |
Owner, operator and place
More from Interstate Power and Light Co
- Ottumwa726 MW
- George Neal South696 MW
- Emery Station603 MW
Other power plants in Iowa
- Walter Scott Jr Energy Center1,648 MW
- Louisa812 MW
- Ottumwa726 MW
- George Neal South696 MW
- Emery Station603 MW
- George Neal North584 MW
- Greater Des Moines576 MW
- Highland Wind Project (IA)502 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- JRC Open Power Plants Database (JRC-PPDB-OPEN), European Commission, Joint Research Centre. JRC Open Power Plants Database (JRC-PPDB-OPEN), CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- Dutch power station owners' and operators' pages. Dutch power station owners' and operators' pages, Facts only, each linked to its page.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.