West Groton CHP
Middlesex County, Massachusetts · EIA plant ID 60276 · Operator: Hollingsworth and Vose Co.
Nameplate4MWSummer 3 MW
Generators1in service
Net generation21GWh12 mo to Dec 2025
Capacity factor72%gas/coal/oil units, summer MW
Heat rate4,941Btu/kWhfossil units, electric fuel, HHV
First online2015Runs as baseload
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2015 | 0.2 | 8.5% | — |
| 2016 | 19.1 | 57.2% | 5,097 |
| 2017 | 20.3 | 61.1% | 5,176 |
| 2018 | 22.3 | 66.9% | 5,115 |
| 2019 | 22 | 66.0% | 5,127 |
| 2020 | 22.6 | 77.8% | 4,933 |
| 2021 | 23 | 79.7% | 4,933 |
| 2022 | 22.4 | 77.6% | 4,937 |
| 2023 | 19.6 | 67.7% | 5,307 |
| 2024 | 22 | 75.8% | 4,960 |
| 2025 | 20.9 | 72.5% | 4,941 |
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 |
|---|---|---|---|---|---|---|---|---|
| G1 | Natural Gas Fired Combustion Turbine | GT | 4.1 | 3.3 | Dec 2015 | Operating | — | coming soon |
Owner / operator
Operator: Hollingsworth and Vose Co.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Hollingsworth and Vose Co. | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Groton BESS 2 | 2 MW | 4.6 km |
| EBZ Solar | 3 MW | 4.8 km |
| Devens | 3 MW | 6.1 km |
| Shirley Water | 2 MW | 6.6 km |
| Groton BESS 1 | 2 MW | 7.8 km |
| Pepperell Hydro Power Plant | 2 MW | 7.8 km |