Grid Storage

Isabella Pumped Storage hydroelectric plant

United States

5th-largest grid storage in United States of 101 · top 7% worldwide (#64 of 965)

Owner
Premium Energy
Status
construction
Capacity
2,000 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

Strongest line nearby
500 kV HVDC
Line operator
Los Angeles Department of Water and Power
Substations in range
0

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: Kern River

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