Grand Basin Energy StorageUnder construction
Jackson County, Michigan · EIA plant ID 70403 · Operator: Grand Basin Energy Storage, LLC
100 MW under construction (Batteries), first expected Mar 2027 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service · 100 MW building
Net generation—GWh12 mo
Capacity factor—not meaningful for storage
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 |
|---|---|---|---|---|---|---|---|---|
| GRBS1 | Batteries | BA | 100 | 100 | planned Mar 2027 | Under construction | — | coming soon |
Owner / operator
Operator: Grand Basin Energy Storage, LLC. 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.
| Surbrook Solar, LLC | 10 MW | 3.6 km |
| Blue Elk II Solar, LLC | 20 MW | 9.5 km |
| Blue Elk III Solar, LLC | 20 MW | 13.7 km |
| Jackson County Solar, LLC | 125 MW | 20.7 km |
| Jackson Generating Station | 649 MW | 21.1 km |
| Shipsterns Solar, LLC | 20 MW | 25.9 km |