Cabot Holyoke
Hydro power plant in Hampden County, Massachusetts. 2.6 MW of nameplate capacity across 4 generators, operated by City of Holyoke Gas and Elec Dept - (MA).
Also known as EIA plant 9864
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2.6 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- January 1893First generator online
- Operator
- City of Holyoke Gas and Elec Dept - (MA)EIA operator ID 8776
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Hampden County, MA42.2000, −72.6100
- EIA plant ID
- 9864EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Cabot Holyoke produces
Free · EIA-923Net generation, 2025
2.95 GWh
2,954 MWh, final
Capacity factor, 2025
13.0%
2024: 19.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
2.5–9.2
GWh a year. Low 2022, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 2,741 | Not reported | 12 of 12 |
| 2002 | 6,144 | Not reported | 12 of 12 |
| 2003 | 5,344 | Not reported | 12 of 12 |
| 2004 | 5,515 | Not reported | 12 of 12 |
| 2005 | 7,002 | Not reported | 12 of 12 |
| 2006 | 21,774 | Not reported | 12 of 12 |
| 2007 | 2,215 | Not reported | 4 of 12 |
| 2008 | 8,448 | Not reported | 12 of 12 |
| 2009 | 9,193 | Not reported | 12 of 12 |
| 2010 | 8,912 | 4.5% | 12 of 12 |
| 2011 | 12,361 | 6.2% | 12 of 12 |
| 2012 | 8,456 | 4.3% | 12 of 12 |
| 2013 | 10,311 | Not reported | 12 of 12 |
| 2014 | 8,863 | 38.9% | 12 of 12 |
| 2015 | 9,186 | Not reported | 12 of 12 |
| 2016 | 4,915 | 21.5% | 12 of 12 |
| 2017 | 4,145 | 18.2% | 12 of 12 |
| 2018 | 2,510 | 11.0% | 12 of 12 |
| 2019 | 5,228 | 23.0% | 12 of 12 |
| 2020 | 3,169 | 13.9% | 12 of 12 |
| 2021 | 3,652 | 16.0% | 12 of 12 |
| 2022 | 2,479 | 10.9% | 12 of 12 |
| 2023 | 6,054 | 26.6% | 12 of 12 |
| 2024 | 4,422 | 19.4% | 12 of 12 |
| 2025 | 2,954 | 13.0% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 0.8 | January 1893 |
| 2 | Conventional Hydroelectric | 0.8 | January 1938 |
| 3 | Conventional Hydroelectric | 0.4 | January 1939 |
| 4 | Conventional Hydroelectric | 0.6 | January 1907 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Holyoke Gas and Elec Dept - (MA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Cabot Holyoke
More plants operated by City of Holyoke Gas and Elec Dept - (MA)
Questions about Cabot Holyoke
How much power does Cabot Holyoke produce?
Cabot Holyoke reported 2,954 MWh (2.95 GWh) of net generation in 2025, a 13.0% capacity factor on 2.6 MW of nameplate capacity.
Where is Cabot Holyoke?
Cabot Holyoke is in Hampden County, Massachusetts, at 42.2000, −72.6100. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Cabot Holyoke?
EIA-860M for August 2026 lists City of Holyoke Gas and Elec Dept - (MA) as the operator (EIA operator ID 8776). The operator is not always the owner.
When did Cabot Holyoke start operating?
Its first generator began operating in January 1893, according to EIA-860M.
Does InfraMap have power prices for Cabot Holyoke?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Cabot Holyoke, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page