88th largest plant in Minnesota · 4367th nationally
Wilmarth is a biomass power plant in Minnesota with a nameplate capacity of 25.0 MW. It generates roughly 97.0k MWh per year — enough to power about 9,241 average U.S. homes.
Its capacity factor of 44% puts it in the middle range — running steadily but not full-time. At 2186 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (25.0 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Wilmarth |
|---|---|
| Operator | Northern States Power Co - Minnesota |
| City | Mankato |
| County | Blue Earth County |
| State | Minnesota |
| ZIP | 56001 |
| Coordinates | 44.19670, -94.00090 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Municipal Solid Waste | Municipal Waste | 12.5 MW | Operating | 1948 |
| 2 | Municipal Solid Waste | Municipal Waste | 12.5 MW | Operating | 1951 |
| CO₂ | 106.1k metric tons |
|---|---|
| SO₂ | 144 metric tons |
| NOₓ | 424 metric tons |
| CO₂ Rate | 2186 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 | MRO |
|---|---|
| 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.