MMSD Jones Island Wastewater
Natural gas and landfill gas power plant in Milwaukee County, Wisconsin. 31.3 MW of nameplate capacity across 4 generators, operated by Milwaukee Metro Sewerage Dist.
Also known as EIA plant 54851
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 31.3 MWNatural gas 22.1 · Landfill gas 9.2
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- January 1971First generator online
- Operator
- Milwaukee Metro Sewerage DistEIA operator ID 12619
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Milwaukee County, WI43.0214, −87.9014
- EIA plant ID
- 54851EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power MMSD Jones Island Wastewater produces
Free · EIA-923Net generation, 2025
79.8 GWh
79,791 MWh, final
Capacity factor, 2025
29.1%
2024: 20.1%
January to July 2026
48.7 GWh
Provisional
Range, 2015 to 2025
55.2–90.9
GWh a year. Low 2024, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 60,463 | Not reported | 12 of 12 |
| 2002 | 70,827 | Not reported | 12 of 12 |
| 2003 | 61,435 | Not reported | 12 of 12 |
| 2004 | 73,002 | Not reported | 12 of 12 |
| 2005 | 67,746 | Not reported | 12 of 12 |
| 2006 | 50,544 | Not reported | 12 of 12 |
| 2007 | 57,212 | Not reported | 12 of 12 |
| 2008 | 35,889 | Not reported | 12 of 12 |
| 2009 | 60,532 | Not reported | 12 of 12 |
| 2010 | 49,258 | 16.1% | 12 of 12 |
| 2011 | 70,778 | 23.1% | 12 of 12 |
| 2012 | 38,042 | 12.4% | 12 of 12 |
| 2013 | 68,578 | Not reported | 12 of 12 |
| 2014 | 79,756 | 29.1% | 12 of 12 |
| 2015 | 84,854 | 30.9% | 12 of 12 |
| 2016 | 90,855 | 33.0% | 12 of 12 |
| 2017 | 79,511 | 29.0% | 12 of 12 |
| 2018 | 89,850 | 32.8% | 12 of 12 |
| 2019 | 88,748 | 32.4% | 12 of 12 |
| 2020 | 90,393 | Not reported | 12 of 12 |
| 2021 | 81,341 | 29.7% | 12 of 12 |
| 2022 | 80,988 | 29.5% | 12 of 12 |
| 2023 | 75,847 | 27.7% | 12 of 12 |
| 2024 | 55,165 | 20.1% | 12 of 12 |
| 2025 | 79,791 | 29.1% | 12 of 12 |
| 2026 (provisional, partial year) | 48,680 | 30.6% | 7 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 |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | 17.5 | January 1971 |
| SOL1 | Natural Gas Fired Combustion Turbine | 4.6 | January 2013 |
| SOL2 | Landfill Gas | 4.6 | January 2013 |
| SOL3 | Landfill Gas | 4.6 | January 2013 |
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 Milwaukee Metro Sewerage Dist 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.
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Power plants near MMSD Jones Island Wastewater
More plants operated by Milwaukee Metro Sewerage Dist
Questions about MMSD Jones Island Wastewater
How much power does MMSD Jones Island Wastewater produce?
MMSD Jones Island Wastewater reported 79,791 MWh (79.8 GWh) of net generation in 2025, a 29.1% capacity factor on 31.3 MW of nameplate capacity. From January to July 2026 it reported 48.7 GWh, which is provisional.
Where is MMSD Jones Island Wastewater?
MMSD Jones Island Wastewater is in Milwaukee County, Wisconsin, at 43.0214, −87.9014. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates MMSD Jones Island Wastewater?
EIA-860M for August 2026 lists Milwaukee Metro Sewerage Dist as the operator (EIA operator ID 12619). The operator is not always the owner.
Is MMSD Jones Island Wastewater a natural gas or a landfill gas plant?
Both. Natural gas capacity totals 22.1 MW and landfill gas capacity totals 9.2 MW.
When did MMSD Jones Island Wastewater start operating?
Its first generator began operating in January 1971, 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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page