Where is MMSD Jones Island Wastewater?

In Milwaukee County, Wisconsin (WI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is MMSD Jones Island Wastewater?

31 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

Who owns MMSD Jones Island Wastewater?

EIA-860M names Milwaukee Metro Sewerage Dist as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as MMSD Jones Island Wastewater LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Milwaukee Metro Sewerage Dist here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "MMSD Jones Island Wastewater LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is MMSD Jones Island Wastewater still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

MMSD Jones Island Wastewater

MMSD Jones Island Wastewater is a 31 MW natural gas power plant in Milwaukee County, Wisconsin, operated by Milwaukee Metro Sewerage Dist. EIA-860M lists 4 generating units here, inside MISO. Its units entered service between 1971 and 2013.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 31.3 MW; 26.8 MW net summer
Generating units: 4
In service: 1971–2013
EIA plant ID: 54851

Where it is

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County: Milwaukee County, Wisconsin
Coordinates: 43.0214, -87.9014
Balancing authority: MISO
Sector: Commercial CHP

Units, technology and status

Operator of record: Milwaukee Metro Sewerage Dist
Primary energy source: Natural gas
Technologies: Landfill Gas, Natural Gas Fired Combustion Turbine
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 22 MW, Biomass 9 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant Milwaukee Metro Sewerage Dist reports to EIA →

MMSD Jones Island Wastewater: FAQ

Where is MMSD Jones Island Wastewater?: In Milwaukee County, Wisconsin (WI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is MMSD Jones Island Wastewater?: 31 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns MMSD Jones Island Wastewater?: EIA-860M names Milwaukee Metro Sewerage Dist as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as MMSD Jones Island Wastewater LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Milwaukee Metro Sewerage Dist here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "MMSD Jones Island Wastewater LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is MMSD Jones Island Wastewater still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.