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Chokepoints
Grid Storage
Whale Rock Pumped Storage hydroelectric plant
41st-largest grid storage in United States of 101 · top 63% worldwide (#602 of 965)
- Operator
- Premium Energy
- Owner
- Premium Energy
- Status
- proposed
- Capacity
- 600 MW
- Technology
- pumped storage
- Commissioned
- 2027
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · United States · 101 ranked
- #1Red Lake Pumped hydroelectric plant3.0 GW
- #39Sweetwater Pumped Storage hydroelectric plant600 MW
- #40Twitchell Pumped Storage hydroelectric plant600 MW
- #41Whale Rock Pumped Storage hydroelectric plant600 MW
- #42Fairfield hydroelectric plant587 MW
- #43Soldier Camp Pumped hydroelectric plant550 MW
Grid connection · within 50 km
- Nearest substation
- Diablo Canyon
- Its voltage
- 500 kV
- Distance
- 27 km
- Strongest line nearby
- 500 kV
- Line operator
- Pacific Gas and Electric Company
- Substations in range
- 1
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
- Whale Rock Pumped Storage hydroelectric plant0 m · Power Plant · 600 MW · hydro
- Gates - Diablo 500KV (Path 15)13 km · Transmission Line
On the interactive map
Portfolio
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)