Grid Storage

Pond Peak Pumped Storage hydroelectric plant

United States

38th-largest grid storage in United States of 101 · top 63% worldwide (#599 of 965)

Owner
rPlus Hydro LLLP
Status
construction
Capacity
600 MW
Technology
pumped storage
Commissioned
2034
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
West Tracy Substation
Its voltage
345 kV
Distance
12 km
Strongest line nearby
500 kV HVDC
Line operator
Los Angeles Department of Water and Power
Substations in range
2

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