Plymouth Site 1
Plymouth County, Massachusetts · EIA plant ID 59137 · Operator: CleanCapital Holdings
Nameplate4MWSummer 4 MW
Generators1in service
Net generation7GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2013
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) |
|---|---|---|---|
| 2013 | 1.1 | 9.1% | — |
| 2014 | 6.8 | 13.9% | — |
| 2015 | 6.8 | 13.8% | — |
| 2016 | 7.6 | 15.4% | — |
| 2017 | 6.8 | 13.8% | — |
| 2018 | 5.9 | 12.1% | — |
| 2019 | 6.9 | 14.1% | — |
| 2020 | 6.8 | 19.5% | — |
| 2021 | 6 | 17.1% | — |
| 2022 | 6.7 | 19.1% | — |
| 2023 | 6.6 | 18.9% | — |
| 2024 | 7.2 | 20.5% | — |
| 2025 | 7.5 | 21.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 57449 | Solar Photovoltaic | PV | 4 | 4 | Oct 2013 | Operating | — | coming soon |
Owner / operator
Operator: CleanCapital Holdings. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GLC-(MA) PlymouthSite 1, LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Brook Street Solar 1 CSG | 5 MW | 0.8 km |
| Upland | 7 MW | 1 km |
| Ring Road | 4 MW | 1.7 km |
| Spring Street Solar 1 CSG | 2 MW | 2.2 km |
| Carver MA 1 Community Solar | 2 MW | 2.4 km |
| Plympton Main Street Solar, LLC | 5 MW | 2.6 km |