Saint Marys Falls

312 W Portage Avenue, Sault Ste. Marie, MI 49783

Plant Summary Information

Saint Marys Falls is ranked #2 out of 50 hydroelectric power plants in Michigan in terms of total annual net electricity generation.

Saint Marys Falls is comprised of 5 generators and generated 42.0 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Saint Marys Falls
Utility Name	USACE-Detroit District
Location	Chippewa County, MI
Initial Operation Date	July 1932
Last Update	Dec 2025
Annual Generation	156.0 GWh
Annual Consumption	577.8 k MMBtu
Ranked #2,901 out of 13,081 Power Plants Nationwide
Ranked #244 out of 1,311 Water Power Plants Nationwide
Ranked #71 out of 269 Michigan Power Plants
Ranked #2 out of 50 Michigan Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Saint Marys Falls (1865)
Plant Address	312 W Portage Avenue, Sault Ste. Marie, MI 49783
Utility	USACE-Detroit District (21264)
Latitude, Longitude	46.50625, -84.34927
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	July 1932
Annual Generation	156.0 GWh
Fuel Types	Water

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	Regulated
NERC Region	RFC
Balancing Authority	Midcontinent Independent Transmission System Operator, Inc.. (MISO)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Lake Superior
Ash Impoundment	No
Transmission / Distribution Owner	Cloverland Electric Co-op (3828) MI
Grid Voltage	13.60 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	2.6 MW
Nameplate Power Factor	0.8
Summer Capacity	2 MW
Winter Capacity	2 MW
Minimum Load	1.2 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	July 1932
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	6.2 MW
Nameplate Power Factor	0.9
Summer Capacity	5.1 MW
Winter Capacity	5.1 MW
Minimum Load	1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	October 1951
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	6.2 MW
Nameplate Power Factor	0.9
Summer Capacity	5.2 MW
Winter Capacity	5.2 MW
Minimum Load	1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	November 1951
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	6.2 MW
Nameplate Power Factor	0.9
Summer Capacity	5.2 MW
Winter Capacity	5.2 MW
Minimum Load	1 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	January 1952
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Time From Cold Shutdown To Full Load	10M

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	2.5 MW
Nameplate Power Factor	0.91
Summer Capacity	2.5 MW
Winter Capacity	2.5 MW
Minimum Load	0.5 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	February 1954
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Water
Time From Cold Shutdown To Full Load	10M

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

Power plants with a similar annual net generation from Water.

Rank	Plant Name	Plant Location	Annual Generation
#234	Woodleaf	Forbestown, CA	167.1 GWh
#235	Drum 2	Alta, CA	164.2 GWh
#236	North Fork	Estacada, OR	164.0 GWh
#237	Greers Ferry Lake	Heber Springs, AR	163.4 GWh
#238	St Stephen	St. Stephen, SC	161.1 GWh
#239	Cushman 2	Shelton, WA	160.5 GWh
#240	West Point (GA)	West Point, GA	159.0 GWh
#241	Chilhowee	Tallassee, TN	157.7 GWh
#242	Eklutna Hydro Project	Palmer, AK	157.6 GWh
#243	Holt Dam	Tuscaloosa, AL	156.6 GWh
#245	Haas	Balch Camp, CA	154.8 GWh
#246	Colton	Pierrepont, NY	154.2 GWh
#247	Prairie Du Sac	Prairie du Sac, WI	152.9 GWh
#248	Big Creek 8	Auberry, CA	151.8 GWh
#249	Harris Hydro	West Forks, ME	150.9 GWh
#250	Bankhead Dam	Northport, AL	150.8 GWh
#251	Lemolo 2	Toketee Falls, OR	149.5 GWh
#252	Gauley River Power Partners	Summersville, WV	149.1 GWh
#253	Terror Lake Microgrid	Kodiak, AK	147.3 GWh
#254	Carpenter	Hot Springs, AR	147.2 GWh

Below are closest 20 power plants surrounding Saint Marys Falls.

Plant Name	Plant Location	Annual Generation	Distance
Alpena Cement Plant	Alpena, MI	205.9 GWh	109.1 mi
Alpine Power Plant	Elmira, MI	775.5 GWh	102.3 mi
Alverno Hydro Plant	Cheboygan, MI	2.8 GWh	66 mi
Beaver Island	Beaver Island, MI	50.0 MWh	77.8 mi
Dafter	Dafter, MI	2.9 GWh	9.7 mi
Detour	Detour, MI	1.8 GWh	41.8 mi
Edison Sault	Sault Ste. Marie, MI	180.8 GWh	1 mi
Four Mile Hydropower Project	Alpena, MI	8.1 GWh	105.8 mi
Gaylord - Wolverine	Gaylord, MI	37.1 GWh	105.3 mi
Grayling Generating Station	Grayling, MI	182.0 GWh	132.4 mi
Kalkaska CT #1	Kalkaska, MI	57.6 GWh	132.2 mi
Kleber	Onaway, MI	4.8 GWh	77 mi
Lightfoot Solar, LLC	Luzerne, MI	18.1 GWh	129.5 mi
Livingston Generating Station	Gaylord, MI	22.3 GWh	103.6 mi
Manistique	Manistique, MI	1.3 GWh	98.8 mi
Mio	Mio, MI	13.6 GWh	127.9 mi
Ninth Street Hydropower Project	Alpena, MI	5.9 GWh	108.4 mi
Norway Point Hydropower Project	Alpena, MI	13.0 GWh	104.9 mi
Pickford Solar	Pickford, MI	9.4 GWh	21.9 mi
Tower	Tower, MI	61.0 MWh	79 mi