Gratiot Solar ParkUnder construction
Gratiot County, Michigan · EIA plant ID 68850 · Operator: DTE Electric Company
50 MW under construction (Solar Photovoltaic), first expected Oct 2026 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service · 50 MW building
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
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.
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 |
|---|---|---|---|---|---|---|---|---|
| GRTSP | Solar Photovoltaic | PV | 50 | 50 | planned Oct 2026 | Under construction | — | coming soon |
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).
Nearby plants
Within 80 km.
| Gratiot Wind Park | 102 MW | 0.4 km |
| Gratiot County Wind LLC | 110 MW | 4.3 km |
| St Louis | 6 MW | 9.2 km |
| Meridian Wind Park | 225 MW | 13.1 km |
| Pine River Solar Park | 80 MW | 15 km |
| Pine River Wind Park | 161 MW | 18.7 km |