144th largest plant in Wisconsin · 6970th nationally
Mmsd South Shore Wastewater is a biomass power plant in Wisconsin with a nameplate capacity of 5.1 MW. It generates roughly 30.2k MWh per year — enough to power about 2,874 average U.S. homes.
Its capacity factor of 68% puts it in the middle range — running steadily but not full-time. At 164 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
| Plant Name | Mmsd South Shore Wastewater |
|---|---|
| Operator | Milwaukee Metro Sewerage Dist |
| City | Oak Creek |
| County | Milwaukee County |
| State | Wisconsin |
| ZIP | 53154 |
| Coordinates | 42.88690, -87.84220 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Other Waste Biomass | Other Biomass Gas | 1.5 MW | Operating | 2000 |
| 1CAT | Other Waste Biomass | Other Biomass Gas | 0.9 MW | Operating | 2009 |
| 2CAT | Other Waste Biomass | Other Biomass Gas | 0.9 MW | Operating | 2010 |
| 3CAT | Other Waste Biomass | Other Biomass Gas | 0.9 MW | Operating | 2009 |
| 4CAT | Other Waste Biomass | Other Biomass Gas | 0.9 MW | Operating | 2009 |
| CO₂ | 2.5k metric tons |
|---|---|
| SO₂ | 1 metric tons |
| NOₓ | 323 metric tons |
| CO₂ Rate | 164 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | RFC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Biomass plants burn wood, agricultural waste, or methane from landfills to generate steam and electricity. They are considered carbon-neutral over long timescales when fuel is sustainably sourced, but they produce particulate emissions similar to coal.