Riverside Holyoke
Hampden County, Massachusetts · EIA plant ID 1607 · Operator: City of Holyoke Gas and Electric Dept.
Nameplate7MWSummer 7 MW
Generators4in service
Net generation22GWh12 mo to Dec 2025
Capacity factor37%hydro units, summer MW
Heat rate—thermal plants only
First online1906
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 | 18.1 | 29.9% | — |
| 2002 | 19.1 | 31.7% | — |
| 2003 | 13 | 21.5% | — |
| 2004 | 27 | 44.5% | — |
| 2005 | 30.4 | 50.2% | — |
| 2006 | 63.8 | 105.5% | — |
| 2007 | 16.7 | 27.6% | — |
| 2008 | 32.1 | 52.9% | — |
| 2009 | 39.3 | 65.0% | — |
| 2010 | 23.8 | 39.3% | — |
| 2011 | 33 | 54.5% | — |
| 2012 | 27.9 | 46.0% | — |
| 2013 | 34.9 | 57.7% | — |
| 2014 | 33.4 | 55.3% | — |
| 2015 | 40.5 | 67.0% | — |
| 2016 | 28.9 | 47.7% | — |
| 2017 | 31.2 | 51.6% | — |
| 2018 | 33 | 54.6% | — |
| 2019 | 34.2 | 56.6% | — |
| 2020 | 31.5 | 51.9% | — |
| 2021 | 28.1 | 46.5% | — |
| 2022 | 20.8 | 34.5% | — |
| 2023 | 40.4 | 66.8% | — |
| 2024 | 38.4 | 63.4% | — |
| 2025 | 22.5 | 37.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 4 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Jan 1906 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 0.6 | 0.6 | Jan 1906 | Operating | — | coming soon |
| 7 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Jan 1922 | Operating | — | coming soon |
| 8 | Conventional Hydroelectric | HY | 4 | 4 | Jan 1931 | 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% | 7 MW |
Nearby plants
Within 80 km.
| Boatlock | 3 MW | 1.1 km |
| Cabot Holyoke | 3 MW | 1.3 km |
| Hadley Falls | 33 MW | 1.5 km |
| Chemical | 2 MW | 1.6 km |
| Chicopee Solar | 3 MW | 1.9 km |
| Chicopee BESS | — | 3.3 km |