Grid Storage

Sweetwater Pumped Storage hydroelectric plant

United States

39th-largest grid storage in United States of 101 · top 63% worldwide (#600 of 965)

Owner
rPlus Hydro LLLP
Status
construction
Capacity
600 MW
Technology
pumped storage
Commissioned
2033
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
Waterflow Substation
Its voltage
345 kV
Distance
14 km
Strongest line nearby
500 kV
Substations in range
5

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: San Juan River

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