Grid Storage

Rock Canyon Pumped Storage hydroelectric plant

United States

54th-largest grid storage in United States of 101 · top 67% worldwide (#641 of 965)

Owner
PacifiCorp
Status
construction
Capacity
500 MW
Technology
pumped storage
Also listed as
A power plant — this site generates as well as stores

Comparable grid storages · United States · 101 ranked

All grid storages in United States

Grid connection · within 50 km

Nearest substation
Huntington Substation
Its voltage
345 kV
Distance
19 km

Mapped grid infrastructure from OpenStreetMap, whose coverage is excellent in some regions and sparse in others. Nothing shown here means nothing is mappednearby — not that the site is unconnected. Lines are matched on a segment’s midpoint, so a corridor passing directly overhead can be missed; this under-reports rather than invents.

Co-located infrastructure · within 25 km

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Portfolio

Watercourse: Cottonwood Creek & Rock Canyon Creek

SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)