S C Moore
Hydro power plant · Grafton County, New Hampshire
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Great River Hydro, LLC
- County
- Grafton County
- Generating units
- 5
- Share of state capacity
- 4.26%
- Rank among hydro plants in New Hampshire
- #1 of 31
- EIA plant code
- 2351
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 48 MW | 47 MW | 1957 | Operating |
| GEN2 | Conventional Hydroelectric | 48 MW | 47 MW | 1957 | Operating |
| GEN3 | Conventional Hydroelectric | 48 MW | 47 MW | 1957 | Operating |
| GEN4 | Conventional Hydroelectric | 48 MW | 47 MW | 1957 | Operating |
| GEN5 | Conventional Hydroelectric | 4.6 MW | 4.6 MW | 2023 | 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 New Hampshire
| Merrimack | Coal | 496 MW |
| Newington | Other | 414 MW |
| Comerford | Hydro | 168 MW |
| Granite Reliable Power | Wind | 99 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 195 MW solar plant and a 195 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 New Hampshire power plants · What New Hampshire actually generates