109th largest plant in Minnesota · 5047th nationally
Saint Marys Hospital Power Plant is a natural gas power plant in Minnesota with a nameplate capacity of 16.3 MW. It generates roughly 55.0k MWh per year — enough to power about 5,239 average U.S. homes.
Its capacity factor of 39% reflects intermittent or peaking operation. At 616 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (16.3 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 | Saint Marys Hospital Power Plant |
|---|---|
| Operator | St Mary's Hospital |
| City | Rochester |
| County | Olmsted County |
| State | Minnesota |
| ZIP | 55902 |
| Coordinates | 44.09785, -92.47982 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | Natural Gas | 4.7 MW | Operating | 1996 |
| 6B | Petroleum Liquids | Distillate Oil | 3.3 MW | Operating | 2020 |
| 4 | Natural Gas Steam Turbine | Natural Gas | 3.0 MW | Operating | 1971 |
| 7 | Petroleum Liquids | Distillate Oil | 2.8 MW | Operating | 2011 |
| 6 | Natural Gas Internal Combustion Engine | Natural Gas | 2.7 MW | Retired | 1989 |
| 5 | Petroleum Liquids | Distillate Oil | 2.5 MW | Standby | 1978 |
| CO₂ | 17.0k metric tons |
|---|---|
| NOₓ | 35 metric tons |
| CO₂ Rate | 616 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.. |
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.