Happy Valley Battery Storage
Battery storage power plant · Canyon County, Idaho
Nameplate capacity
82 MW
Rank in Idaho
#23
of 155 plants
In service since
2025
July 2025
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Idaho Power Co
- County
- Canyon County
- Generating units
- 1
- Share of state capacity
- 1.25%
- Rank among battery storage plants in Idaho
- #3 of 9
- EIA plant code
- 67573
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| HPVY | Batteries | 82 MW | 82 MW | 2025 | 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
| American Falls | Hydro | 92 MW |
| C J Strike | Hydro | 83 MW |
| Grand View Solar Two | Solar | 80 MW |
| Rockland Wind Farm | Wind | 79 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 82 MW solar plant and a 82 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