Pepperell Hydro Power Plant
Middlesex County, Massachusetts · EIA plant ID 10694 · Operator: Eagle Creek RE LLC
Nameplate2MWSummer 2 MW
Generators3in service
Net generation2GWh12 mo to Aug 2026
Capacity factor11%hydro units, summer MW
Heat rate—thermal plants only
First online1920
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 2.4 | 18.1% | — |
| 2002 | 3.5 | 26.1% | — |
| 2003 | 1.7 | 13.1% | — |
| 2005 | 0 | 0.0% | — |
| 2006 | 3.3 | 24.6% | — |
| 2007 | 13.6 | 70.7% | — |
| 2008 | 7.5 | 38.8% | — |
| 2009 | 9.1 | 47.2% | — |
| 2010 | 4.7 | 24.4% | — |
| 2011 | 6.2 | 32.0% | — |
| 2012 | 4 | 20.9% | — |
| 2013 | 3.6 | 18.5% | — |
| 2014 | 5.7 | 29.4% | — |
| 2015 | 4.7 | 24.3% | — |
| 2016 | 0.8 | 4.3% | — |
| 2017 | 5.9 | 30.5% | — |
| 2018 | 7.6 | 39.3% | — |
| 2019 | 6.3 | 32.5% | — |
| 2020 | 4.9 | 25.2% | — |
| 2021 | 6.9 | 35.6% | — |
| 2022 | 4.5 | 23.4% | — |
| 2023 | 7.2 | 37.4% | — |
| 2024 | 5.9 | 30.6% | — |
| 2025 | 3.8 | 19.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 2121 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Jan 1920 | Operating | — | coming soon |
| 8281 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Jan 1920 | Operating | — | coming soon |
| G3 | Conventional Hydroelectric | HY | 0.6 | 0.6 | Dec 2006 | Operating | — | coming soon |
Owner / operator
Operator: Eagle Creek RE LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Pepperell Hydro Company, LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Dunstable Solar 1, LLC | 9 MW | 4.8 km |
| Groton BESS 2 | 2 MW | 5.9 km |
| Groton BESS 1 | 2 MW | 7.3 km |
| West Groton CHP | 4 MW | 7.8 km |
| Nashua Plant | 2 MW | 8.3 km |
| Tyngsborough Solar | 3 MW | 10.6 km |