75th largest plant in Wisconsin · 4132nd nationally
Mmsd Jones Island Wastewater is a natural gas power plant in Wisconsin with a nameplate capacity of 31.3 MW. It generates roughly 75.8k MWh per year — enough to power about 7,223 average U.S. homes.
Its capacity factor of 28% reflects intermittent or peaking operation. At 444 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
| Plant Name | Mmsd Jones Island Wastewater |
|---|---|
| Operator | Milwaukee Metro Sewerage Dist |
| City | Milwaukee |
| County | Milwaukee County |
| State | Wisconsin |
| ZIP | 53207 |
| Coordinates | 43.02140, -87.90140 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | Natural Gas | 17.5 MW | Operating | 1971 |
| GEN2 | Natural Gas Fired Combustion Turbine | Natural Gas | 17.5 MW | Retired | 1971 |
| SOL1 | Natural Gas Fired Combustion Turbine | Natural Gas | 4.6 MW | Operating | 2013 |
| SOL2 | Landfill Gas | Landfill Gas | 4.6 MW | Operating | 2013 |
| SOL3 | Landfill Gas | Landfill Gas | 4.6 MW | Operating | 2013 |
| CO₂ | 16.8k metric tons |
|---|---|
| SO₂ | 2 metric tons |
| CO₂ Rate | 444 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.. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.