Messalonskee 2 (Oakland)
Kennebec County, Maine · EIA plant ID 1497 · Operator: Messalonskee Stream Hydro LLC
Nameplate3MWSummer 3 MW
Generators1in service
Net generation7GWh12 mo to Dec 2025
Capacity factor28%hydro units, summer MW
Heat rate—thermal plants only
First online1924
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 | 9.3 | 39.9% | — |
| 2002 | 30.8 | 125.6% | — |
| 2003 | 13.1 | 53.3% | — |
| 2004 | 0 | 0.0% | — |
| 2005 | 0 | 0.0% | — |
| 2006 | 12.9 | 52.6% | — |
| 2007 | 8.8 | 35.7% | — |
| 2008 | 15 | 61.1% | — |
| 2009 | 12.2 | 49.6% | — |
| 2010 | 5.2 | 21.1% | — |
| 2011 | 10.9 | 44.3% | — |
| 2012 | 7.9 | 32.3% | — |
| 2013 | 12 | 48.8% | — |
| 2014 | 13.5 | 55.0% | — |
| 2015 | 8.9 | 36.1% | — |
| 2016 | 7.3 | 29.9% | — |
| 2017 | 10.2 | 41.6% | — |
| 2018 | 8.6 | 35.2% | — |
| 2019 | 11.1 | 45.3% | — |
| 2020 | 8.6 | 35.0% | — |
| 2021 | 8.1 | 32.9% | — |
| 2022 | 8.8 | 35.7% | — |
| 2023 | 12.9 | 52.7% | — |
| 2024 | 10.8 | 44.0% | — |
| 2025 | 6.8 | 27.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 2.8 | 2.8 | Jan 1924 | Operating | — | coming soon |
Owner / operator
Operator: Messalonskee Stream Hydro LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Messalonskee Stream Hydro LLC | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Webb Road Solar | 5 MW | 2.5 km |
| Oakland | 5 MW | 3 km |
| Solar Mule, LLC | 2 MW | 3.3 km |
| Messalonskee 3 | 2 MW | 3.3 km |
| Cenergy - Waterville (CSG) | 5 MW | 3.5 km |
| Broadhead | 5 MW | 4.1 km |