Polaris Solar Park

OperatingSolar

Ranked #31 of 99 Solar plants in MI#850 of 7790 nationally

100 MW Solar operating in Gratiot, MI — Midcontinent Independent Transmission System Operator, Inc..

EIAGEM

100 MW

Nameplate Capacity

Generators

unit

Solar Photovoltaic

Technology

2025

Operating Since

Location

Coordinates

43.2075, -84.5291

County

Gratiot, MI

Nearby Plants

Beebe 1A
Wind81.6 MW · 6.0 km
Beebe 1B
Wind50.4 MW · 6.0 km
Polaris Wind Park
Wind168.6 MW · 9.5 km

Status

Project statusOperationalPR Newswire · 2025-06-11

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

EIA Plant Profile Global Energy Monitor

Engineering & Generators

Grid Context

ISO/RTO

MISO

Market

ISO/RTO Member

NERC Region

RFC

Balancing Authority

Generation

5.7K MWh

Latest Month

59.0K MWh

Annual Generation

13.3%

Capacity Factor

Financial Data

EIA Avg CostEIA Construction Cost AveragesMEDIUM

2023

Construction CostOperating CostPricing & Revenue

$1,606/kW

Est. Construction Cost

Total estimated cost: $160.6M

Technology Average·Based on EIA averages — not plant-specific financial reports

Pricing & Market Data

HIGH confidence

Point 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 (1)Beta

Last updated 2026-03-26

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Polaris Solar Park — Plant Summary

Polaris Solar Park

Ownership Chain