New Martinsville Hannibal Hydro
Hydro power plant · Wetzel County, West Virginia
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- New Martinsville Hannibal Hydro
- County
- Wetzel County
- Generating units
- 2
- Share of state capacity
- 0.23%
- Rank among hydro plants in West Virginia
- #5 of 12
- EIA plant code
- 50036
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| UNT1 | Conventional Hydroelectric | 19 MW | 9.5 MW | 1988 | Operating |
| UNT2 | Conventional Hydroelectric | 19 MW | 9.5 MW | 1988 | 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 West Virginia
| Willow Island Hydroelectric Plant | Hydro | 44 MW |
| Belleville Dam | Hydro | 42 MW |
| Beech Ridge Energy Storage | Battery storage | 32 MW |
| Winfield | Hydro | 25 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 37 MW solar plant and a 37 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 West Virginia power plants · What West Virginia actually generates