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- Combustion
- Operating
- 10 · 100 · 1,000 MW
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- Combustion
- Operating
Manitowoc: location and 2 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Manitowoc
Power plant · Oil
Key facts
Power plant · Oilran 17% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1955
- Net generation, 2025
- 178,129 MWh
- Grid
- 69 kV to American Transmission Co (MISO)
- Location
- Manitowoc County, Wisconsin
- Operated by
- Manitowoc Public UtilitiesSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
- Gas
- Coal
- Oil
- Biomass and waste
Details
Who’s behind it
- Owner
- Manitowoc Public UtilitiesSource100.0%, EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT), as of Dec 31, 2023
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- Technology
- Oil source: “Petroleum Coke”
- Age
- 71 years since 1955
- Unused energy
- 850 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 12,464 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 2,220,154 |
| Capacity factor, 2025 | 0.173 |
| Heat rate (Btu/kWh), 2025 | 12,463.7 |
| Net generation (MWh), 2025 | 178,129.0 |
| Balancing authority code | MISO |
Retirement
EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.- Capacity retired
- 36 MW
- Generators retired
- 5
- Capacity still in service
- 117.4 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 2 | Conventional Steam Coal | 5 MW | Retired | December 2003 |
| 3 | Conventional Steam Coal | 10 MW | Retired | December 2003 |
| IC1 | Natural Gas Internal Combustion Engine | 5.5 MW | Retired | October 2009 |
| 4 | Petroleum Coke | 10 MW | Retired | September 2011 |
| IC2 | Natural Gas Internal Combustion Engine | 5.5 MW | Retired | December 2017 |
By technology
| Technology | Retired | Scheduled to retire |
|---|---|---|
| Conventional Steam Coal | 15 MW | |
| Natural Gas Internal Combustion Engine | 11 MW | |
| Petroleum Coke | 10 MW |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 69 kV
- Transmission or distribution system owner
- American Transmission Co
- Balancing authority
- Midcontinent Independent Transmission System Operator, Inc..
- NERC region
- MRO
Transmission lines within 25 km (9)
- Glenview - Shoto 138 kV
- Mishicot - Shoto 138 kV
- Point Beach Station - Sheboygan Falls Station 345 kV
- Forest Junction - Howards Grove 138 kV
- Mishicot - Kewaunee 138 kV
- Point Beach Station - Branch River 345 kV
- Forest Junction - Branch River 345 kV
- Kewaunee - Point Beach Station 345 kV
- Point Beach Station - Fox River Station 345 kV
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 Unit IC2 scheduled to retire, 5.5 MW · EIA-860M
- Stated Unit 4 scheduled to retire, 10 MW · EIA-860M
- Stated Unit IC1 scheduled to retire, 5.5 MW · EIA-860M
- Stated Units 2, 3 scheduled to retire, 15 MW · EIA-860M
- In service · EIA-860M
Sources
6 sourcesSources EIA-860M · GEM · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Sources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- 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
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Manitowoc unit 8 Postponed | Biomass | 0.0 km | 60 |
| Tisch Mills Wind Postponed | Wind | 18.9 km | 150 |
Sources EIA-860M