Hadley Falls
Hydro power plant in Hampden County, Massachusetts. 33.4 MW of nameplate capacity across 2 generators, operated by City of Holyoke Gas and Elec Dept - (MA).
Also known as Hadley Station Hydro Project · Hadley Falls Station · EIA plant 1605
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 33.4 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 1952First 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, MA42.2119, −72.6036
- EIA plant ID
- 1605EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Hadley Falls produces
Free · EIA-923Net generation, 2025
137 GWh
137,327 MWh, final
Capacity factor, 2025
46.9%
2024: 51.5%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
75.7–218.2
GWh a year. Low 2016, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 156,495 | Not reported | 12 of 12 |
| 2001 | 86,876 | Not reported | 12 of 12 |
| 2002 | 171,540 | Not reported | 12 of 12 |
| 2003 | 197,814 | Not reported | 12 of 12 |
| 2004 | 187,374 | Not reported | 12 of 12 |
| 2005 | 192,195 | Not reported | 12 of 12 |
| 2006 | 455,940 | Not reported | 12 of 12 |
| 2007 | 142,101 | Not reported | 12 of 12 |
| 2008 | 208,136 | Not reported | 12 of 12 |
| 2009 | 216,351 | Not reported | 12 of 12 |
| 2010 | 192,789 | 65.9% | 12 of 12 |
| 2011 | 212,560 | 72.6% | 12 of 12 |
| 2012 | 175,771 | 59.9% | 12 of 12 |
| 2013 | 185,126 | 63.3% | 12 of 12 |
| 2014 | 98,741 | 33.7% | 12 of 12 |
| 2015 | 103,787 | 35.5% | 12 of 12 |
| 2016 | 75,698 | Not reported | 12 of 12 |
| 2017 | 182,033 | Not reported | 12 of 12 |
| 2018 | 178,413 | 61.0% | 12 of 12 |
| 2019 | 105,508 | 36.1% | 12 of 12 |
| 2020 | 94,311 | 32.1% | 12 of 12 |
| 2021 | 209,121 | 71.5% | 12 of 12 |
| 2022 | 164,021 | 56.1% | 12 of 12 |
| 2023 | 218,186 | 74.6% | 12 of 12 |
| 2024 | 151,142 | 51.5% | 12 of 12 |
| 2025 | 137,327 | 46.9% | 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 | 17.6 | January 1952 |
| 2 | Conventional Hydroelectric | 15.8 | November 1983 |
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 Hadley Falls
More plants operated by City of Holyoke Gas and Elec Dept - (MA)
Questions about Hadley Falls
How much power does Hadley Falls produce?
Hadley Falls reported 137,327 MWh (137 GWh) of net generation in 2025, a 46.9% capacity factor on 33.4 MW of nameplate capacity.
Where is Hadley Falls?
Hadley Falls is in Hampden County, Massachusetts, at 42.2119, −72.6036. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Hadley Falls?
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 Hadley Falls start operating?
Its first generator began operating in January 1952, according to EIA-860M.
Does InfraMap have power prices for Hadley Falls?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Hadley Falls, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page