Marsh Valley Development
Hydro power plant · Bannock County, Idaho
Nameplate capacity
1.6 MW
Rank in Idaho
#144
of 155 plants
In service since
1993
April 1993
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Marsh Valley Development Inc
- County
- Bannock County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among hydro plants in Idaho
- #65 of 76
- EIA plant code
- 50972
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 1.6 MW | 1.5 MW | 1993 | 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 Idaho
| Big Sky Dairy Digester | Other | 1.6 MW |
| Clif Bar Bakery of Twin Falls | Solar | 1.6 MW |
| Little Mac Project | Hydro | 1.5 MW |
| Mile 28 Water Power Project | Hydro | 1.4 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 1.6 MW solar plant and a 1.6 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 Idaho power plants · What Idaho actually generates