Saint Marys Hospital Power Plant
Natural gas power plant · Olmsted County, Minnesota
Nameplate capacity
16 MW
Rank in Minnesota
#111
of 804 plants
In service since
1971
January 1971
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- St Mary's Hospital
- County
- Olmsted County
- Generating units
- 5
- Share of state capacity
- 0.08%
- Rank among natural gas plants in Minnesota
- #30 of 36
- EIA plant code
- 54262
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | 4.7 MW | 4.5 MW | 1996 | Operating |
| 6B | Petroleum Liquids | 3.3 MW | 3.3 MW | 2020 | Operating |
| 4 | Natural Gas Steam Turbine | 3.0 MW | 2.7 MW | 1971 | Operating |
| 7 | Petroleum Liquids | 2.8 MW | 2.8 MW | 2011 | Operating |
| 5 | Petroleum Liquids | 2.5 MW | 2.5 MW | 1978 | Standby/Backup: available for service but not normally used |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Minnesota
| Twin Cities Hydro LLC | Hydro | 18 MW |
| New Prague | Natural gas | 17 MW |
| Windom Wind Project | Wind | 16 MW |
| Sylvan Solar | Solar | 15 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 16 MW solar plant and a 16 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Minnesota power plants · What Minnesota actually generates