Saint Marys Falls

Saint Marys Falls is a 23.7 MW operating hydroelectric plant in Chippewa County, Michigan, operated by USACE-Detroit District.

Plant statusOperating

Planning (completed)
Consented (completed)
Construction (completed)
OperatingJul 1932 (current stage)
Closed (not yet reached)

Open in Google Maps More hydroelectric plants in Michigan

Generators

Each generating unit EIA lists at this plant.

Unit	Technology	Capacity	Status	Online
1	Conventional Hydroelectric	6.2 MW	Operating	Oct 1951
2	Conventional Hydroelectric	6.2 MW	Operating	Nov 1951
3	Conventional Hydroelectric	6.2 MW	Operating	Jan 1952
10	Conventional Hydroelectric	2.6 MW	Operating	Jul 1932
3A	Conventional Hydroelectric	2.5 MW	Operating	Feb 1954

Plant details

Operator: USACE-Detroit District
Location: Chippewa County, Michigan
Balancing authority: MISO
Sector: Electric Utility
Capacity: Operating: 23.7 MW
First unit online: Jul 1932
EIA plant ID: 1865

Location

46.5063, -84.3493

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem