Polaris Solar Park — Plant Summary
- EIA Plant ID
- 67757
- Capacity
- 100 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Gratiot, MI
- Operating Since
- 2025
- Generators
- 1
- Operator
- DTE Electric Company
- Parent Company
- DTE Energy
- Annual Generation
- 58,951 MWh
- Capacity Factor
- 13.3%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- RFC
Polaris Solar Park
OperatingSolar
Ranked #20 of 85 Solar plants in MI#776 of 7447 nationally
100 MW Solar operating in Gratiot, MI — Midcontinent Independent Transmission System Operator, Inc..
EIAGEM
100 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2025
Operating Since
Location
Coordinates
43.2075, -84.5291
County
Gratiot, MI
Nearby Plants
- Beebe 1AWind81.6 MW · 6.0 km
- Beebe 1BWind50.4 MW · 6.0 km
- Polaris Wind ParkWind168.6 MW · 9.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | DTE Electric Company | DTE Electric Company | — |
| Owner(s) | DTE Electric Company | DTE Energy | — |
| Status | Operating | operating | — |
Ownership Chain
About
Polaris Solar Park is a 100 MW solar photovoltaic power plant located in Gratiot County, Michigan. The plant, which began operating in 2025, is owned by DTE Energy and operated by DTE Electric Company. It consists of a single generator utilizing fixed-tilt solar tracking technology. Polaris Solar Park ranks as the 21st largest solar facility in Michigan and 615th nationally.
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority, in the ReliabilityFirst Corporation (RFC) NERC region. In its latest year of operation, Polaris Solar Park generated 58,951 MWh of electricity, achieving a capacity factor of 13.3%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
345 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
5.7K MWh
Latest Month
59.0K MWh
Annual Generation
13.3%
Capacity Factor
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Slate Substation · 345 kV
Substation Distance
0.23 km
Operator
ITC
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
CONS.POLRS.SOL
Pricing Hub
MICHIGAN.HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (10)Beta
Regulatory·rate case
DTE wins approval of $242 million annual electric rate increase
DTE Energy received approval to collect $242 million more from its electric customers, which is part of $1 billion in higher rates over the...
DTE Energy (other)
WJRT ABC12·3 weeks ago
Regulatory·state puc
Nessel seeks more scrutiny of DTE Energy deal with data center
Michigan's attorney general is concerned that DTE customers could be on the hook financially if plans for a massive Oracle data center in...
DTE (other)Oracle (other)
WJRT ABC12·4 months ago
Industry·corporate
Renewable Energy & Battery Energy Stocks in Focus Amid Record Growth Trends
Soaring clean power demand and storage growth put the spotlight on stocks like RUN, DTE and AEE, as renewable expansion accelerates.
DTE (other)
Nasdaq·6 months ago
Grid·capacity addition
U.S. installs 14.5 GW of large-scale solar in the first half of 2025
Solar represented 75% of grid capacity additions in the first half, followed distantly by wind and natural gas, said new data from the...
pv magazine USA·6 months ago
Last updated 2026-03-14
View all 10 articles