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23.7 MW Hydro operating in Chippewa, MI — Midcontinent Independent Transmission System Operator, Inc..
23.7 MW
Nameplate Capacity
5
Generators
units
Conventional Hydroelectric
Technology
1932
Operating Since
Coordinates
46.5062, -84.3493
County
Chippewa, MI
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | USACE-Detroit District | — | — |
| Owner(s) | USACE-Detroit District | — | — |
| Status | Operating | — | — |
The Saint Marys Falls Hydropower Plant is an 18-MW hydroelectric generating plant located in Sault Ste. Marie, Michigan. It extracts water from the St. Marys River under the supervision of the Army Corps of Engineers, and the power is taken up and distributed by the Cloverland Electric Cooperative, a rural utility that serves the Soo area.
Read more on WikipediaSaint Marys Falls is a 23.7 MW hydroelectric power plant located in Chippewa County, Michigan. The plant began operating in 1932 and consists of 5 generators utilizing conventional hydroelectric technology. It is owned and operated by the USACE-Detroit District. The plant's primary fuel source is water (WAT).
The facility operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the ReliabilityFirst Corporation (RFC) NERC region. In terms of size, Saint Marys Falls ranks as the 4th largest hydroelectric plant out of 50 in Michigan, and 452nd out of 1464 nationally. The plant's latest annual generation was 155,166 MWh, resulting in a capacity factor of 74.5%.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
13.3K MWh
Latest Month
155.2K MWh
Annual Generation
74.5%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $54.4M
Point of Interconnection
Nearest Substation
Magazine Substation · 69 kV
Substation Distance
0.676 km
Operator
American Transmission Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
MIUP.MAGAZESH
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-26
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ask pi about Saint Marys FallsMidcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
13.6 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility