Chemical
Hampden County, Massachusetts · EIA plant ID 1604 · Operator: City of Holyoke Gas and Electric Dept.
Nameplate2MWSummer 2 MW
Generators2in service
Net generation5GWh12 mo to Dec 2025
Capacity factor37%hydro units, summer MW
Heat rate—thermal plants only
First online1935
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 | 1 | 7.9% | — |
| 2002 | 1.4 | 10.2% | — |
| 2003 | 2.3 | 16.2% | — |
| 2004 | 1.5 | 10.5% | — |
| 2005 | 3 | 21.3% | — |
| 2006 | 11.4 | 81.7% | — |
| 2007 | 6.4 | 46.0% | — |
| 2008 | 5.3 | 37.4% | — |
| 2009 | 4.4 | 31.1% | — |
| 2010 | 3.5 | 25.1% | — |
| 2011 | 5.5 | 39.0% | — |
| 2012 | 3.5 | 25.3% | — |
| 2013 | 4.2 | 29.8% | — |
| 2014 | 3.6 | 25.7% | — |
| 2015 | 6.8 | 48.6% | — |
| 2016 | 3.1 | 22.1% | — |
| 2017 | 2.4 | 17.2% | — |
| 2018 | 3.5 | 24.9% | — |
| 2019 | 1.6 | 11.4% | — |
| 2020 | 0 | 0.0% | — |
| 2021 | 3.1 | 22.4% | — |
| 2022 | 3.5 | 25.2% | — |
| 2023 | 7.4 | 52.6% | — |
| 2024 | 5.5 | 39.0% | — |
| 2025 | 5.1 | 36.7% | — |
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 | 0.8 | 0.8 | Jan 1935 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Jan 1935 | 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% | 2 MW |
Nearby plants
Within 80 km.
| Cabot Holyoke | 3 MW | 0.9 km |
| Riverside Holyoke | 7 MW | 1.6 km |
| Boatlock | 3 MW | 2 km |
| Chicopee BESS | — | 2 km |
| Hadley Falls | 33 MW | 2.3 km |
| Chicopee Solar | 3 MW | 2.3 km |