Berlin Gorham
Coos County, New Hampshire · EIA plant ID 54639 · Operator: Great Lakes Hydro America LLC
Nameplate44MWSummer 44 MW
Generators22in service
Net generation101GWh12 mo to Dec 2025
Capacity factor39%hydro units, summer MW
Heat rate—thermal plants only
First online1914
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 | 189.1 | 34.3% | — |
| 2002 | 90.8 | 18.4% | — |
| 2003 | 155.9 | 60.9% | — |
| 2004 | 169.4 | 66.0% | — |
| 2005 | 256.3 | 100.2% | — |
| 2006 | 26.3 | 10.2% | — |
| 2007 | 28.6 | 11.1% | — |
| 2008 | 29.6 | 11.4% | — |
| 2009 | 200.6 | 75.3% | — |
| 2010 | 182.7 | 68.6% | — |
| 2011 | 171.2 | 64.3% | — |
| 2012 | 180.1 | 67.4% | — |
| 2013 | 189.8 | 71.3% | — |
| 2014 | 153.2 | 57.5% | — |
| 2015 | 142.3 | 53.4% | — |
| 2016 | 153.3 | 57.4% | — |
| 2017 | 150.8 | 56.6% | — |
| 2018 | 118.8 | 44.6% | — |
| 2019 | 127.6 | 47.9% | — |
| 2020 | 138.4 | 51.8% | — |
| 2021 | 115.8 | 43.5% | — |
| 2022 | 137.3 | 51.6% | — |
| 2023 | 168 | 63.1% | — |
| 2024 | 133.5 | 50.6% | — |
| 2025 | 101.1 | 38.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BESS1 | Batteries | BA | 14 | 14 | Dec 2023 | Operating | — | coming soon |
| CAS1 | Conventional Hydroelectric | HY | 2.4 | 2.4 | Jan 1914 | Operating | — | coming soon |
| CAS2 | Conventional Hydroelectric | HY | 2.4 | 2.4 | Jan 1916 | Operating | — | coming soon |
| CAS3 | Conventional Hydroelectric | HY | 3.1 | 3.1 | Jan 1918 | Operating | — | coming soon |
| GOR1 | Conventional Hydroelectric | HY | 1.2 | 1.2 | Jan 1920 | Operating | — | coming soon |
| GOR2 | Conventional Hydroelectric | HY | 1.2 | 1.2 | Jan 1920 | Operating | — | coming soon |
| GOR3 | Conventional Hydroelectric | HY | 1.2 | 1.2 | Jan 1920 | Operating | — | coming soon |
| GOR4 | Conventional Hydroelectric | HY | 1.2 | 1.2 | Jan 1920 | Operating | — | coming soon |
| RS1 | Conventional Hydroelectric | HY | 3.8 | 3.8 | Jan 1920 | Operating | — | coming soon |
| RS3 | Conventional Hydroelectric | HY | 4.1 | 4.1 | Jan 1920 | Operating | — | coming soon |
| SH2 | Conventional Hydroelectric | HY | 0.9 | 0.9 | Jan 1916 | Operating | — | coming soon |
| SHL1 | Conventional Hydroelectric | HY | 0.9 | 0.9 | Jan 1916 | Operating | — | coming soon |
| SHL3 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jan 1929 | Operating | — | coming soon |
| SM1 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Oct 1980 | Operating | — | coming soon |
| SM2 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Oct 1980 | Operating | — | coming soon |
| SM3 | Conventional Hydroelectric | HY | 0.7 | 0.8 | Oct 1980 | Operating | — | coming soon |
| SM4 | Conventional Hydroelectric | HY | 0.8 | 0.8 | Oct 1980 | Operating | — | coming soon |
| XP1 | Conventional Hydroelectric | HY | 0.6 | 0.6 | Jan 1921 | Operating | — | coming soon |
| XP2 | Conventional Hydroelectric | HY | 0.6 | 0.6 | Jan 1921 | Operating | — | coming soon |
| XP3 | Conventional Hydroelectric | HY | 0.6 | 0.6 | Jan 1921 | Operating | — | coming soon |
| XP4 | Conventional Hydroelectric | HY | 0.5 | 0.5 | Jan 1921 | Operating | — | coming soon |
| XP5 | Conventional Hydroelectric | HY | 0.7 | 0.7 | Jan 1924 | Operating | — | coming soon |
| TUR1 | Petroleum Liquids | ST | 7.5 | 7.5 | Jan 1957 | not_current | — | coming soon |
| TUR4 | Wood/Wood Waste Biomass | ST | 5 | 5 | Oct 1948 | not_current | — | coming soon |
| TUR7 | Wood/Wood Waste Biomass | ST | 2.5 | 2.5 | Jan 1926 | not_current | — | coming soon |
Owner / operator
Operator: Great Lakes Hydro America LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Great Lakes Hydro America LLC | 100.0% | 44 MW |
Nearby plants
Within 80 km.
| Gorham | 2 MW | 3.3 km |
| Smith (NH) | 15 MW | 9 km |
| Burgess BioPower | 75 MW | 9.3 km |
| Jericho Power | 14 MW | 9.9 km |
| Pontook Hydro Facility | 11 MW | 27.9 km |
| DG Whitefield LLC | 20 MW | 30.4 km |