Pejepscot Hydroelectric Project
Hydro power plant · Sagadahoc County, Maine
Nameplate capacity
14 MW
Rank in Maine
#56
of 274 plants
In service since
1987
November 1987
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Topsham Hydro Partners
- County
- Sagadahoc County
- Generating units
- 4
- Share of state capacity
- 0.22%
- Rank among hydro plants in Maine
- #12 of 48
- EIA plant code
- 50758
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 12 MW | 12 MW | 1987 | Operating |
| GEN4 | Conventional Hydroelectric | 0.5 MW | 0.5 MW | 1987 | Operating |
| GEN2 | Conventional Hydroelectric | 0.4 MW | 0.4 MW | 1987 | Operating |
| GEN3 | Conventional Hydroelectric | 0.3 MW | 0.3 MW | 1987 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Maine
| RoxWind | Wind | 15 MW |
| Bonny Eagle | Battery storage | 15 MW |
| Regional Waste Systems | Other | 13 MW |
| West Enfield Hydro | Hydro | 13 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 14 MW solar plant and a 14 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Maine power plants · What Maine actually generates