Boatlock
Hampden County, Massachusetts · EIA plant ID 1603 · Operator: City of Holyoke Gas and Electric Dept.
Nameplate3MWSummer 3 MW
Generators3in service
Net generation12GWh12 mo to Dec 2025
Capacity factor39%hydro units, summer MW
Heat rate—thermal plants only
First online1921
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), hydro 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) |
|---|---|---|---|
| 2001 | 9.7 | 38.0% | — |
| 2002 | 10.6 | 41.8% | — |
| 2003 | 10.6 | 41.5% | — |
| 2004 | 10.5 | 41.1% | — |
| 2005 | 11.7 | 46.0% | — |
| 2006 | 24.1 | 94.8% | — |
| 2007 | 7.9 | 31.0% | — |
| 2008 | 14.9 | 99.8% | — |
| 2009 | 14.9 | 58.7% | — |
| 2010 | 9.2 | 34.0% | — |
| 2011 | 15.6 | 57.6% | — |
| 2012 | 13.2 | 48.5% | — |
| 2013 | 14.1 | 51.8% | — |
| 2014 | 12.1 | 44.4% | — |
| 2015 | 14.9 | 50.2% | — |
| 2016 | 11.2 | 37.5% | — |
| 2017 | 15.3 | 51.3% | — |
| 2018 | 16.5 | 55.3% | — |
| 2019 | 15.4 | 51.6% | — |
| 2020 | 14.5 | 48.6% | — |
| 2021 | 13.1 | 43.9% | — |
| 2022 | 10.6 | 35.6% | — |
| 2023 | 21.3 | 71.4% | — |
| 2024 | 18.9 | 63.2% | — |
| 2025 | 11.6 | 38.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Jan 1921 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 1.2 | 1.5 | Jan 1924 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 1.2 | 1.2 | Jan 1924 | Operating | — | coming soon |
Owner / operator
Operator: City of Holyoke Gas and Electric Dept.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Holyoke Gas and Electric Dept. | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Hadley Falls | 33 MW | 0.4 km |
| Riverside Holyoke | 7 MW | 1.1 km |
| Cabot Holyoke | 3 MW | 1.2 km |
| Chemical | 2 MW | 2 km |
| Chicopee Solar | 3 MW | 3 km |
| Chicopee BESS | — | 4 km |