Grid Storage

Raccoon Mountain hydroelectric plant

United States

9th-largest grid storage in United States of 101 · top 11% worldwide (#106 of 965)

Operator
Tennessee Valley Authority
Owner
Tennessee Valley Authority (TVA)
Status
operating
Capacity
1,714 MW
Technology
pumped storage
Commissioned
1978
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
Sequoyah Substation
Its voltage
500 kV
Distance
33 km
Strongest line nearby
500 kV
Substations in range
3

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: Tennessee River

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