Washington Island
Oil power plant in Door County, Wisconsin. 5 MW of nameplate capacity across 7 generators, operated by Washington Island El Coop, Inc.
Also known as Washington Island Electric Cooperative Powerhouse · EIA plant 4148
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 5 MWNameplate
- Generators
- 7 operatingEIA-860M, August 2026
- Operating since
- December 1945First generator online
- Operator
- Washington Island El Coop, IncEIA operator ID 20153
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Door County, WI45.3709, −86.9308
- EIA plant ID
- 4148EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Washington Island produces
Free · EIA-923Net generation, 2025
5 MWh
5 MWh, final
Capacity factor, 2025
0.0%
2024: Not reported
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
5.0–235.0
MWh a year. Low 2025, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 92 | Not reported | 12 of 12 |
| 2002 | 288 | Not reported | 12 of 12 |
| 2003 | 162 | Not reported | 12 of 12 |
| 2004 | 50 | Not reported | 12 of 12 |
| 2005 | 531 | Not reported | 12 of 12 |
| 2006 | 207 | Not reported | 12 of 12 |
| 2007 | 98 | Not reported | 12 of 12 |
| 2008 | 63 | Not reported | 12 of 12 |
| 2009 | 39 | Not reported | 12 of 12 |
| 2010 | 56 | 0.1% | 12 of 12 |
| 2011 | 40 | 0.1% | 12 of 12 |
| 2012 | 33 | 0.1% | 12 of 12 |
| 2013 | 49 | 0.1% | 12 of 12 |
| 2014 | 45 | 0.1% | 12 of 12 |
| 2015 | 30 | 0.1% | 12 of 12 |
| 2016 | 125 | 0.3% | 12 of 12 |
| 2017 | 14 | 0.0% | 12 of 12 |
| 2018 | 235 | 0.5% | 12 of 12 |
| 2019 | 27 | 0.1% | 12 of 12 |
| 2020 | 9 | 0.0% | 12 of 12 |
| 2021 | 15 | 0.0% | 12 of 12 |
| 2022 | 11 | 0.0% | 12 of 12 |
| 2023 | 9 | 0.0% | 12 of 12 |
| 2024 | Not reported | Not reported | 0 of 12 |
| 2025 | 5 | 0.0% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 2 | Petroleum Liquids | 0.1 | August 1952 |
| 3 | Petroleum Liquids | 0.1 | December 1945 |
| 4 | Petroleum Liquids | 0.2 | April 1951 |
| 5 | Petroleum Liquids | 0.5 | June 1968 |
| 6 | Petroleum Liquids | 0.9 | July 1972 |
| 7 | Petroleum Liquids | 1.6 | January 1997 |
| 8 | Petroleum Liquids | 1.6 | January 1997 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Washington Island El Coop, Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
300 analyst questions a month, plus MCP
Query Washington Island and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Washington Island
Questions about Washington Island
How much power does Washington Island produce?
Washington Island reported 5 MWh (5 MWh) of net generation in 2025, a 0.0% capacity factor on 5 MW of nameplate capacity.
Where is Washington Island?
Washington Island is in Door County, Wisconsin, at 45.3709, −86.9308. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Washington Island?
EIA-860M for August 2026 lists Washington Island El Coop, Inc as the operator (EIA operator ID 20153). The operator is not always the owner.
When did Washington Island start operating?
Its first generator began operating in December 1945, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page