Barker Lower
Androscoggin County, Maine · EIA plant ID 10728 · Operator: KEI (Maine) Power Management (III) LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor29%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 | 25.3% | — |
| 2002 | 4.4 | 33.3% | — |
| 2003 | 3 | 22.4% | — |
| 2004 | 4.3 | 32.5% | — |
| 2005 | 6.2 | 46.2% | — |
| 2006 | 6.6 | 49.2% | — |
| 2007 | 4.9 | 37.6% | — |
| 2008 | 7.4 | 56.2% | — |
| 2009 | 5.2 | 39.4% | — |
| 2010 | 3.7 | 28.4% | — |
| 2011 | 4.6 | 34.9% | — |
| 2012 | 5.9 | 44.5% | — |
| 2013 | 6.3 | 48.2% | — |
| 2014 | 5.9 | 44.9% | — |
| 2015 | 4.2 | 32.1% | — |
| 2016 | 2.6 | 19.7% | — |
| 2017 | 5 | 37.8% | — |
| 2018 | 2.5 | 18.9% | — |
| 2019 | 5.5 | 42.0% | — |
| 2020 | 5.2 | 39.3% | — |
| 2021 | 4.5 | 34.2% | — |
| 2022 | 4.9 | 37.3% | — |
| 2023 | 8.1 | 61.5% | — |
| 2024 | 3.7 | 27.7% | — |
| 2025 | 3.8 | 29.1% | — |
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 | 1.5 | 1.5 | Apr 1986 | Operating | — | coming soon |
Owner / operator
Operator: KEI (Maine) Power Management (III) LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| KEI (Maine) Power Management (III) LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Upper Barker | 1 MW | 0 km |
| Upper Androscoggin | 2 MW | 1.4 km |
| Charles E Monty | 28 MW | 1.6 km |
| MMWAC Resource Recovery Facility | 5 MW | 3.3 km |
| Deer Rips | 7 MW | 5.7 km |
| Androscoggin 3 | retired | 5.9 km |