GD Hopkinton Main I, LLC
Washington County, Rhode Island · EIA plant ID 63893 · Operator: GD Hopkinton Main I, LLC
Nameplate11MWSummer 11 MW
Generators3in service
Net generation16GWh12 mo to Dec 2025
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2020
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), solar 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 | 0.2 | 1.1% | — |
| 2021 | 15.6 | 16.8% | — |
| 2022 | 16.9 | 18.2% | — |
| 2023 | 15.8 | 17.0% | — |
| 2024 | 15.8 | 16.9% | — |
| 2025 | 15.8 | 17.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| MAIN1 | Solar Photovoltaic | PV | 2.6 | 2.6 | Nov 2020 | Operating | — | coming soon |
| MAIN2 | Solar Photovoltaic | PV | 3.9 | 3.9 | Nov 2020 | Operating | — | coming soon |
| MAIN3 | Solar Photovoltaic | PV | 4.1 | 4.1 | Nov 2020 | Operating | — | coming soon |
Owner / operator
Operator: GD Hopkinton Main I, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GD Hopkinton Main I, LLC | 100.0% | 11 MW |
Nearby plants
Within 80 km.
| Hopkinton Phase 2 | 3 MW | 1 km |
| SR North Stonington | 12 MW | 2.8 km |
| Alton Road Solar | 14 MW | 4.4 km |
| North Stonington Solar Center, LLC | 15 MW | 5.1 km |
| Richmond NMCA | 4 MW | 5.5 km |
| White Rock Road LLC | 7 MW | 6.4 km |