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18.5 MW Natural Gas operating in St Clair, MI — Midcontinent Independent Transmission System Operator, Inc..
18.5 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Fired Combustion Turbine
Technology
1968
Operating Since
Coordinates
42.7642, -82.4719
County
St Clair, MI
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | DTE Electric Company | DTE Electric | — |
| Owner(s) | DTE Electric Company | DTE Energy | — |
| Status | Operating | — | — |
The Saint Clair Power Plant was a major coal- and oil-fired power plant owned by DTE Electric, a subsidiary of DTE Energy. It was located in St. Clair County, Michigan, on the west bank of St. Clair River. The plant was across M-29 from the newer Belle River Power Plant in East China, Michigan. The first four units of St. Clair were built in 1953–1954. Since then, three more generating units were added to the plant. The St. Clair Power Plant generated 1982 megawatts in total. It was Detroit Edison's second largest power producer. The power plant has a large impact on the local economy, employing about 300 workers. The plant shut down in May 2022.
Read more on WikipediaThe St Clair power plant is located in St Clair County, Michigan. It is owned by DTE Energy and operated by DTE Electric Company. The plant has a total capacity of 18.5 MW from a single natural gas-fired combustion turbine generator. The plant began operating in 1968.
In the most recent year with available data, the St Clair plant generated 4,575 MWh of electricity, resulting in a capacity factor of 2.9%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the ReliabilityFirst Corporation (RFC) NERC region. St Clair ranks as the 41st largest power plant in Michigan out of 62, and 1330th nationally out of 1963 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
0 MWh
Latest Month
4.6K MWh
Annual Generation
2.9%
Capacity Factor
CO₂ Intensity
2955 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
8 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $17.9M
Point of Interconnection
Nearest Substation
Saint Clair Substation · 345 kV
Substation Distance
0 km
Operator
ITC
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
DECO.STCLP11
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-26
View all 5 articlesNo ask pi reports yet for this entity.
ask pi about St ClairMidcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
345.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.081 lb/MWh
CH₄
0.056 lb/MWh
N₂O
0.006 lb/MWh
Capacity Factor
0.2%
Annual Net Gen
0 GWh
CO₂eq
2958 lb/MWh
Subregion
RFC Michigan