Sherman
Franklin County, Massachusetts · EIA plant ID 6012 · Operator: Great River Hydro, LLC
Nameplate7MWSummer 6 MW
Generators1in service
Net generation28GWh12 mo to Dec 2025
Capacity factor52%hydro units, summer MW
Heat rate—thermal plants only
First online1926
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 | 27.5 | 45.8% | — |
| 2002 | 28.6 | 53.6% | — |
| 2003 | 34.2 | 64.2% | — |
| 2004 | 30.3 | 56.6% | — |
| 2005 | 32.5 | 61.0% | — |
| 2006 | 34.3 | 64.4% | — |
| 2007 | 4.3 | 8.1% | — |
| 2008 | 34.9 | 65.1% | — |
| 2009 | 35.4 | 66.2% | — |
| 2010 | 29.5 | 55.2% | — |
| 2011 | 33.9 | 63.4% | — |
| 2012 | 22.3 | 41.7% | — |
| 2013 | 24.1 | 45.1% | — |
| 2014 | 29.2 | 54.7% | — |
| 2015 | 22.4 | 41.9% | — |
| 2016 | 21.9 | 40.9% | — |
| 2017 | 32.7 | 61.2% | — |
| 2018 | 35.2 | 65.9% | — |
| 2019 | 30.3 | 56.7% | — |
| 2020 | 27.7 | 51.6% | — |
| 2021 | 33.5 | 62.7% | — |
| 2022 | 24.7 | 46.3% | — |
| 2023 | 35.5 | 66.4% | — |
| 2024 | 26.5 | 49.5% | — |
| 2025 | 27.8 | 52.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 7.2 | 6.1 | Dec 1926 | Operating | — | coming soon |
Owner / operator
Operator: Great River Hydro, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Great River Hydro, LLC | 100.0% | 7 MW |
Nearby plants
Within 80 km.
| Deerfield 5 | 18 MW | 4.8 km |
| Bear Swamp | 666 MW | 5.6 km |
| Fife Brook | 11 MW | 6.2 km |
| Harriman | 34 MW | 7.2 km |
| New England Wind LLC | 29 MW | 7.6 km |
| Charlemont A | 5 MW | 10.1 km |