Rose Solar
Hampshire County, Massachusetts · EIA plant ID 69794 · Operator: Ecos Energy LLC
Nameplate4MWSummer 4 MW
Generators1in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online2026
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 |
|---|---|---|---|---|---|---|---|---|
| ROSE | Solar Photovoltaic | PV | 4 | 4 | Apr 2026 | Operating | — | coming soon |
Owner / operator
Operator: Ecos Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ecos Energy LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Town of Ware - Canadian Tree(CSG) | 1 MW | 2.3 km |
| Ware Palmer Road Solar LLC CSG | 5 MW | 2.4 km |
| Ava Solar | 4 MW | 3.8 km |
| Belchertown Renewables Community Solar | 4 MW | 4.3 km |
| West Brookfield Solar - Gilbertsville Rd CSG | 4 MW | 4.8 km |
| Syncarpha Palmer, LLC | 5 MW | 6.1 km |