Polaris Wind Park
Gratiot County, Michigan · EIA plant ID 62290 · Operator: DTE Electric Company
Nameplate169MWSummer 169 MW
Generators1in service
Net generation459GWh12 mo to Aug 2026
Capacity factor31%wind units, summer MW
Heat rate—thermal plants only
First online2020
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), wind units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2020 | 301 | 30.4% | — |
| 2021 | 442.1 | 29.9% | — |
| 2022 | 498.9 | 33.8% | — |
| 2023 | 412.7 | 27.9% | — |
| 2024 | 425.1 | 28.7% | — |
| 2025 | 454.6 | 30.8% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 168.6 | 168.6 | May 2020 | Operating | — | ge 2.5-127 |
Owner / operator
Operator: DTE Electric Company. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| DTE Electric Company | 100.0% | 169 MW |
Nearby plants
Within 80 km.
| Beebe 1A | 82 MW | 0.6 km |
| Beebe 1B | 50 MW | 0.6 km |
| Polaris Solar Park | 100 MW | 6.6 km |
| Heartland Farms | 200 MW | 12.1 km |
| Gratiot County Wind LLC | 110 MW | 16.5 km |
| St Louis | 6 MW | 17.5 km |