- Combustion
- Retired
- 10 · 100 · 1,000 MW
Map
- Combustion
- Retired
Marathon Electric: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Marathon Electric
Power plant · Oil
Key facts
Power plant · Oil Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1978
- Net generation, 2020
- 0 MWh
- Location
- Marathon County, Wisconsin
- Operated by
- Marathon Electric Mfg CorpSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
- Oil
Details
Who’s behind it
No companies named in filings yet.
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- Technology
- Oil source: “Petroleum Liquids”
- Age
- 48 years since 1978
1 attribute from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Balancing authority code | MISO |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- June 2021
- First unit retired
- December 2009
- Capacity retired
- 3.3 MW
- Generators retired
- 5
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| P3-5 | Petroleum Liquids | 0.7 MW | Retired | December 2009 |
| P1-1 | Petroleum Liquids | 0.4 MW | Retired | July 2018 |
| P1-2 | Petroleum Liquids | 0.4 MW | Retired | July 2018 |
| P2-3 | Petroleum Liquids | 0.9 MW | Retired | June 2021 |
| P2-4 | Petroleum Liquids | 0.9 MW | Retired | June 2021 |
Grid
EIA-860Grid fieldsAs the plant reported them to EIA-860 (Schedule 2).- Balancing authority
- MISO
Transmission lines within 15 mi (8)
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Timeline
- Stated Units P2-3, P2-4 scheduled to retire, 1.8 MW · EIA-860M
- Stated Units P1-1, P1-2 scheduled to retire, 0.8 MW · EIA-860M
- Stated Unit P3-5 scheduled to retire, 0.7 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M
- LBNLYin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory