Saint Marys Hospital Power Plant

1216 Second St NW, Rochester, MN 55902

Plant Summary Information

Saint Marys Hospital Power Plant is ranked #21 out of 55 natural gas power plants in Minnesota in terms of total annual net electricity generation.

Saint Marys Hospital Power Plant is comprised of 5 generators and generated 12.8 GWh during the 3-month period between February 2026 to May 2026.

Plant Name	Saint Marys Hospital Power Plant
Utility Name	St Mary's Hospital
Location	Olmsted County, MN
Initial Operation Date	January 1971
Last Update	May 2026
Annual Generation	55.5 GWh
Annual Consumption	961.7 k MMBtu
Ranked #4,074 out of 13,081 Power Plants Nationwide
Ranked #1,069 out of 2,206 Natural Gas Power Plants Nationwide
Ranked #85 out of 781 Minnesota Power Plants
Ranked #21 out of 55 Minnesota Natural Gas Power Plants
Fuel Types	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%

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Monthly Net Generation for Saint Marys Hospital Power Plant

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Monthly Plant Fuel Consumption for Saint Marys Hospital Power Plant

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Saint Marys Hospital Power Plant Details

Summary Information
Plant Name	Saint Marys Hospital Power Plant (54262)
Plant Address	1216 Second St NW, Rochester, MN 55902
Utility	St Mary's Hospital (17897)
Latitude, Longitude	44.09785, -92.47982
Generation Dates on File	Jan 2001 to May 2026
Initial Operation Date	January 1971
Annual Generation	55.5 GWh
Fuel Types	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	No
FERC Exempt Wholesale Generator Status	No

Regulatory Information
Regulatory Status	Non-Regulated
NERC Region	MRO
Balancing Authority	Midcontinent Independent Transmission System Operator, Inc.. (MISO)
NAICS Code	Hospitals (622)
Sector	Commercial CHP (5)
Water Source	Wells Municipality
Ash Impoundment	No
Transmission / Distribution Owner	Rochester Public Utilities (16181) MN
Grid Voltage	13.80 kV
Energy Storage	No

Natural Gas Information
Local Distribution Company (LDC)	MINNESOTA ENERGY RESOURCES

* Data obtained from the 2025 EIA 860 Report

Generator 4 Details Operating January 1971

Technology	Natural Gas Steam Turbine
Prime Mover	Steam Turbine
Unit Code	CC1
Ownership	Single Owner
Nameplate Capacity	3 MW
Nameplate Power Factor	0.8
Summer Capacity	2.7 MW
Winter Capacity	2.7 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	January 1971
Combined Heat & Power	Yes
Sector Name	Commercial CHP (5)
Topping Or Bottoming	B
Energy Source	Natural Gas / Distillate Fuel Oil
Startup Source	Natural Gas
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	Yes
Cofire Fuels	No
Switch Between Oil And Natural Gas	Yes

Multifuel Details
Switch When Operating	Yes
Net Summer Capacity With Natural Gas	2.7 MW
Net Winter Capacity With Natural Gas	2.7 MW
Net Summer Capacity With Oil	2.7 MW
Net Winter Capacity With Oil	2.7 MW
Time To Switch From Gas To Oil	1H
Time To Switch From Oil To Gas	1H
Factors That Limit Switching	No

Generator 5 Details Standby January 1978

Technology	Petroleum Liquids
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	2.5 MW
Nameplate Power Factor	0.8
Summer Capacity	2.5 MW
Winter Capacity	2.5 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No
Status	Standby

Synchronized To Transmission Grid	Yes
First Operation Date	January 1978
Combined Heat & Power	No
Sector Name	Commercial CHP (5)
Energy Source	Distillate Fuel Oil
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Cofire Fuels	No
Switch Between Oil And Natural Gas	No

Generator 1 Details Operating June 1996

Technology	Natural Gas Fired Combustion Turbine
Prime Mover	Combustion Turbine
Unit Code	CC1
Ownership	Single Owner
Nameplate Capacity	4.7 MW
Nameplate Power Factor	0.8
Summer Capacity	4.5 MW
Winter Capacity	4.5 MW
Minimum Load	1.5 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	June 1996
Combined Heat & Power	Yes
Sector Name	Commercial CHP (5)
Topping Or Bottoming	T
Energy Source	Natural Gas
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No
Switch Between Oil And Natural Gas	No

Generator 7 Details Operating March 2011

Technology	Petroleum Liquids
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	2.8 MW
Nameplate Power Factor	0.8
Summer Capacity	2.8 MW
Winter Capacity	2.8 MW
Minimum Load	0.3 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	March 2011
Combined Heat & Power	No
Sector Name	Commercial CHP (5)
Energy Source	Distillate Fuel Oil
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator 6B Details Operating July 2020

Technology	Petroleum Liquids
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	3.3 MW
Nameplate Power Factor	0.8
Summer Capacity	3.3 MW
Winter Capacity	3.3 MW
Minimum Load	0.3 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	July 2020
Combined Heat & Power	No
Sector Name	Commercial CHP (5)
Energy Source	Distillate Fuel Oil
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No

Saint Marys Hospital Power Plant Plant Owners

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power Plants with Similar Net Generation

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#1062	Brunswick Cellulose	Brunswick, GA	245.3 GWh
#1063	Black Mountain Generating Station	Golden Valley, AZ	55.2 GWh
#1064	Sylvamo Corporation Eastover Facility	Eastover, SC	546.3 GWh
#1065	Hyperion Treatment Plant CHP Plant	Playa del Rey, CA	155.9 GWh
#1066	Mars Wrigley Confectionery US, LLC	Hackettstown, NJ	55.2 GWh
#1067	J K Spruce	San Antonio, TX	6.2 TWh
#1068	San Diego State University	San Diego, CA	56.5 GWh
#1070	CH Resources Syracuse	Solvay, NY	54.8 GWh
#1071	Waterbury Generation	Waterbury, CT	55.0 GWh
#1072	International Paper Georgetown Mill	Georgetown, SC	484.7 GWh
#1073	Newington	Newington, NH	157.4 GWh
#1074	Gillette SBMC	Boston, MA	54.2 GWh
#1075	Cogeneration 1	Tucson, AZ	54.1 GWh
#1076	General Chemical	Green River, WY	215.9 GWh
#1077	New York Presbyterian Hospital- 68th Street	New York, NY	54.1 GWh
#1078	Tilton	Tilton, IL	53.8 GWh
#1079	AOC, Capitol Power Plant	Washington, DC	54.4 GWh

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