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Grid Storage
Hiwassee hydroelectric plant
90th-largest grid storage in United States of 101 · top 88% worldwide (#845 of 965)
- Operator
- Tennessee Valley Authority
- Owner
- Tennessee Valley Authority (TVA)
- Status
- operating
- Capacity
- 166 MW
- Technology
- pumped storage (site also has conventional hydro)
- Commissioned
- 1940
- 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
- #88Mount Elbert hydroelectric plant200 MW
- #89Ruby Hill hydroelectric plant200 MW
- #90Hiwassee hydroelectric plant166 MW
- #91Harry Truman hydroelectric plant161 MW
- #92Sacaton Energy Storage hydroelectric plant150 MW
Co-located infrastructure · within 25 km
- Hiwassee hydroelectric plant0 m · Power Plant · 166 MW · hydro
On the interactive map
Watercourse: Hiwassee River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)