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Chokepoints
Grid Storage
Taum Sauk hydroelectric plant
64th-largest grid storage in United States of 101 · top 71% worldwide (#679 of 965)
- Operator
- Union Electric
- Owner
- Union Electric Co
- Status
- operating
- Capacity
- 408 MW
- Technology
- pumped storage
- Commissioned
- 1963
- 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
- #62Juan Torres Mesa Pumped hydroelectric plant450 MW
- #63Seneca hydroelectric plant438 MW
- #64Taum Sauk hydroelectric plant408 MW
- #65Mokelumne Pumped Storage hydroelectric plant400 MW
- #66Packer Banks Pumped Storage Project hydroelectric plant400 MW
Co-located infrastructure · within 25 km
- Taum Sauk hydroelectric plant0 m · Power Plant · 408 MW · hydro
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Portfolio
Watercourse: East Fork Of Black River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)