Great Lakes Hydro America - ME
Penobscot County, Maine · EIA plant ID 54134 · Operator: Great Lakes Hydro America LLC
Nameplate158MWSummer 153 MW
Generators33in service
Net generation500GWh12 mo to Dec 2025
Capacity factor43%hydro units, summer MW
Heat rate—thermal plants only
First online1917
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 | 1,028.6 | 48.5% | — |
| 2002 | 497.9 | 45.6% | — |
| 2003 | 418 | 37.0% | — |
| 2004 | 692.4 | 61.0% | — |
| 2005 | 826.2 | 73.0% | — |
| 2006 | 842 | 74.4% | — |
| 2007 | 788.7 | 69.7% | — |
| 2008 | 853.5 | 75.2% | — |
| 2009 | 872.4 | 77.1% | — |
| 2010 | 780.7 | 68.5% | — |
| 2011 | 760.7 | 66.0% | — |
| 2012 | 727.6 | 63.0% | — |
| 2013 | 679.4 | 59.0% | — |
| 2014 | 696.8 | 60.5% | — |
| 2015 | 647 | 56.2% | — |
| 2016 | 630.1 | 54.5% | — |
| 2017 | 651.7 | 56.6% | — |
| 2018 | 654.5 | 56.8% | — |
| 2019 | 723.1 | 61.5% | — |
| 2020 | 662.5 | 56.2% | — |
| 2021 | 546.4 | 46.5% | — |
| 2022 | 540 | 46.1% | — |
| 2023 | 737.2 | 62.8% | — |
| 2024 | 570.9 | 48.6% | — |
| 2025 | 500.1 | 42.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BES1 | Batteries | BA | 10 | 9.4 | Dec 2020 | Operating | — | coming soon |
| BES2 | Batteries | BA | 10 | 9.4 | Dec 2020 | Operating | — | coming soon |
| DOH2 | Conventional Hydroelectric | HY | 1.3 | 1.3 | Jul 1925 | Operating (Out of service) | — | coming soon |
| DOH3 | Conventional Hydroelectric | HY | 1.3 | 1.3 | Jul 1925 | Operating (Out of service) | — | coming soon |
| DOH4 | Conventional Hydroelectric | HY | 1.8 | 1.8 | Jul 1925 | Operating (Out of service) | — | coming soon |
| DOH5 | Conventional Hydroelectric | HY | 5.3 | 5 | Jul 1988 | Operating | — | coming soon |
| DOH6 | Conventional Hydroelectric | HY | 4.1 | 3.9 | Jul 1975 | Operating | — | coming soon |
| DOH7 | Conventional Hydroelectric | HY | 4.1 | 3.9 | Jul 1975 | Operating | — | coming soon |
| DOH8 | Conventional Hydroelectric | HY | 3 | 3.4 | Jul 1930 | Operating | — | coming soon |
| EMH1 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| EMH2 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| EMH3 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| EMH4 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| EMH5 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| EMH6 | Conventional Hydroelectric | HY | 1.6 | 1.5 | Jul 1948 | Operating | — | coming soon |
| MCH1 | Conventional Hydroelectric | HY | 12.2 | 11.6 | Jul 1953 | Operating | — | coming soon |
| MCH2 | Conventional Hydroelectric | HY | 12.2 | 11.6 | Jul 1953 | Operating | — | coming soon |
| MCH3 | Conventional Hydroelectric | HY | 13.2 | 12.5 | Jul 1967 | Operating | — | coming soon |
| MIH2 | Conventional Hydroelectric | HY | 5.5 | 5.3 | Jul 1917 | Operating (Out of service) | — | coming soon |
| MIH3 | Conventional Hydroelectric | HY | 5.5 | 5.3 | Jul 1917 | Operating | — | coming soon |
| MIH4 | Conventional Hydroelectric | HY | 5.1 | 5.5 | Jul 1917 | Operating | — | coming soon |
| MIH5 | Conventional Hydroelectric | HY | 5.1 | 4.9 | Jul 1921 | Operating | — | coming soon |
| MIH6 | Conventional Hydroelectric | HY | 5.1 | 4.9 | Jul 1921 | Operating | — | coming soon |
| MIH7 | Conventional Hydroelectric | HY | 4 | 5.5 | Jul 1921 | Operating | — | coming soon |
| MIH8 | Conventional Hydroelectric | HY | 5.4 | 5.1 | Jul 1987 | Operating | — | coming soon |
| MIHI | Conventional Hydroelectric | HY | 5.4 | 5.1 | Jul 1987 | Operating | — | coming soon |
| NOH1 | Conventional Hydroelectric | HY | 3.2 | 3 | Jul 1986 | Operating | — | coming soon |
| NOH2 | Conventional Hydroelectric | HY | 3.2 | 3 | Jul 1986 | Operating | — | coming soon |
| NOH3 | Conventional Hydroelectric | HY | 3.2 | 3 | Jul 1986 | Operating | — | coming soon |
| WEH1 | Conventional Hydroelectric | HY | 4.8 | 4.6 | Jul 1940 | Operating | — | coming soon |
| WEH2 | Conventional Hydroelectric | HY | 4.8 | 4.6 | Jul 1940 | Operating | — | coming soon |
| WEH3 | Conventional Hydroelectric | HY | 4.8 | 4.6 | Jul 1940 | Operating | — | coming soon |
| WEH4 | Conventional Hydroelectric | HY | 4.8 | 4.6 | Jul 1940 | Operating | — | 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% | 158 MW |
Nearby plants
Within 80 km.
| Our Katahdin | 5 MW | 0.5 km |
| Medway Hydro | 4 MW | 13.1 km |
| Gateway Solar, LLC | 4 MW | 14.5 km |
| Lincoln ME 1 | 5 MW | 37.1 km |
| Rollins Wind Project | 60 MW | 42 km |
| Corkwood Solar (CSG) | 5 MW | 43.4 km |