Rollinsford
Strafford County, New Hampshire · EIA plant ID 54418 · Operator: Green Mountain Power Corp
Nameplate1MWSummer 1 MW
Generators2in service
Net generation3GWh12 mo to Dec 2025
Capacity factor24%hydro units, summer MW
Heat rate—thermal plants only
First online1986
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 | 3.4 | 28.7% | — |
| 2002 | 4.7 | 39.9% | — |
| 2003 | 6 | 50.9% | — |
| 2004 | 5.5 | 46.9% | — |
| 2005 | 6.2 | 53.0% | — |
| 2006 | 6.4 | 54.9% | — |
| 2007 | 4.5 | 36.4% | — |
| 2008 | 6.7 | 54.4% | — |
| 2009 | 7.6 | 61.7% | — |
| 2010 | 5.2 | 42.2% | — |
| 2011 | 6.6 | 53.4% | — |
| 2012 | 5.7 | 46.3% | — |
| 2013 | 5.8 | 47.1% | — |
| 2014 | 5.4 | 44.4% | — |
| 2015 | 4.5 | 37.1% | — |
| 2016 | 4.8 | 39.1% | — |
| 2017 | 3.7 | 30.2% | — |
| 2018 | 6.3 | 51.3% | — |
| 2019 | 6.4 | 52.3% | — |
| 2020 | 5 | 40.3% | — |
| 2021 | 5 | 40.5% | — |
| 2022 | 4.8 | 39.1% | — |
| 2023 | 4 | 32.9% | — |
| 2024 | 2.3 | 18.7% | — |
| 2025 | 3 | 24.1% | — |
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 | 0.7 | 0.7 | Oct 1986 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Jan 1995 | Operating | — | coming soon |
Owner / operator
Operator: Green Mountain Power Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Green Mountain Power Corp | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Salmon Falls | 1 MW | 1.1 km |
| Somersworth Lower Great Dam | 1 MW | 2.5 km |
| Knights Pond Solar, LLC | 4 MW | 3.3 km |
| General Electric Great Falls Upper Hydro | retired | 4.3 km |
| Blackwater Rd Solar | 2 MW | 5.3 km |
| Turnkey Landfill Gas Recovery | 9 MW | 12.1 km |