Cabot Holyoke
Hampden County, Massachusetts · EIA plant ID 9864 · Operator: City of Holyoke Gas and Electric Dept.
Nameplate3MWSummer 2 MW
Generators4in service
Net generation3GWh12 mo to Dec 2025
Capacity factor16%hydro units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1893
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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 2.7 | 11.5% | — |
| 2002 | 6.1 | 28.2% | — |
| 2003 | 5.3 | 27.2% | 8,174 |
| 2004 | 5.5 | 26.5% | 24,441 |
| 2005 | 7 | 35.1% | — |
| 2006 | 21.8 | 100.2% | 21,176 |
| 2007 | 6.7 | 34.9% | — |
| 2008 | 8.4 | 44.2% | — |
| 2009 | 9.2 | 49.6% | 18,063 |
| 2010 | 8.9 | 44.3% | 19,851 |
| 2011 | 12.4 | 70.5% | — |
| 2012 | 8.5 | 48.1% | — |
| 2013 | 10.3 | 58.9% | — |
| 2014 | 8.9 | 50.6% | — |
| 2015 | 9.2 | 49.9% | — |
| 2016 | 4.9 | 26.6% | — |
| 2017 | 4.1 | 22.5% | — |
| 2018 | 2.5 | 13.6% | — |
| 2019 | 5.2 | 28.4% | — |
| 2020 | 3.2 | 17.2% | — |
| 2021 | 3.7 | 19.9% | — |
| 2022 | 2.5 | 13.5% | — |
| 2023 | 6.1 | 32.9% | — |
| 2024 | 4.4 | 24.0% | — |
| 2025 | 3 | 16.1% | — |
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 | 0.6 | Jan 1893 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.8 | 0.6 | Jan 1938 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 0.4 | 0.4 | Jan 1939 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 0.6 | 0.5 | Jan 1907 | Operating | — | coming soon |
| 6 | Natural Gas Steam Turbine | ST | 10 | 9.3 | Aug 1955 | Retired Mar 2013 | — | coming soon |
| 8 | Natural Gas Steam Turbine | ST | 10 | 9.3 | Aug 1951 | Retired Mar 2013 | — | coming soon |
| 9 | Natural Gas Steam Turbine | ST | 6 | 5.7 | — | Retired Dec 2009 | — | 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.
| Chemical | 2 MW | 0.9 km |
| Boatlock | 3 MW | 1.2 km |
| Riverside Holyoke | 7 MW | 1.3 km |
| Hadley Falls | 33 MW | 1.4 km |
| Chicopee Solar | 3 MW | 2.8 km |
| Chicopee BESS | — | 2.9 km |