Spring Street Solar 1 CSG
Plymouth County, Massachusetts · EIA plant ID 61009 · Operator: Spring Street Solar 1, LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2017
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) |
|---|---|---|---|
| 2017 | 2.7 | 18.1% | — |
| 2018 | 3.1 | 17.6% | — |
| 2019 | 3 | 17.2% | — |
| 2020 | 3.2 | 18.5% | — |
| 2021 | 3.8 | 21.6% | — |
| 2022 | 3.3 | 18.7% | — |
| 2023 | 4.8 | 27.5% | — |
| 2024 | 3.2 | 18.4% | — |
| 2025 | 3 | 17.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| SPRIN | Solar Photovoltaic | PV | 2 | 2 | Mar 2017 | Operating | — | coming soon |
Owner / operator
Operator: Spring Street Solar 1, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Spring Street Solar 1, LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Carver MA 1 Community Solar | 2 MW | 0.4 km |
| Plymouth Site 1 | 4 MW | 2.2 km |
| Brook Street Solar 1 CSG | 5 MW | 2.2 km |
| Upland | 7 MW | 3 km |
| Ring Road | 4 MW | 3.9 km |
| Carver | 2 MW | 4.2 km |