MMSD South Shore Wastewater
MMSD South Shore Wastewater is a 5 MW biomass power plant in Milwaukee County, Wisconsin, operated by Milwaukee Metro Sewerage Dist. EIA-860M lists 5 generating units here, inside MISO. Its units entered service between 2000 and 2010.
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
- 5.1 MW
- 5 MW net summer
- Generating units
- 5
- In service
- 2000–2010
- EIA plant ID
- 55525
Where it is
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- County
- Milwaukee County, Wisconsin
- Coordinates
- 42.8869, -87.8422
- Balancing authority
- MISO
- Sector
- Commercial CHP
Units, technology and status
- Operator of record
- Milwaukee Metro Sewerage Dist
- Primary energy source
- Biomass
- Technologies
- Other Waste Biomass
- Status
- Operating
MMSD South Shore Wastewater: FAQ
- Where is MMSD South Shore 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 South Shore Wastewater?
- 5 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
- Who owns MMSD South Shore 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 South Shore 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 South Shore 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 South Shore Wastewater still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.