Grid Storage

Clarence Cannon hydroelectric plant

United States

98th-largest grid storage in United States of 101 · top 97% worldwide (#936 of 965)

Operator
US Army Corps of Engineers - Louis District
Owner
US Army Corps of Engineers - Louis District
Status
operating
Capacity
58 MW
Technology
pumped storage (site also has conventional hydro)
Commissioned
1984
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
Spencer Creek Substation
Its voltage
345 kV
Distance
26 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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Watercourse: Mark Twain Lake

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