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- Transmission Line80,968
- Power Plant32,429
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Chokepoints
Grid Storage
Bear Swamp hydroelectric plant
34th-largest grid storage in United States of 101 · top 59% worldwide (#564 of 965)
- Operator
- Bear Swamp Power Co
- Owner
- Brookfield Renewable Partners LP
- Status
- operating
- Capacity
- 666 MW
- Technology
- pumped storage
- Commissioned
- 1974
- 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
- #32Eldorado Pumped Storage hydroelectric plant750 MW
- #33Cat Creek hydroelectric plant720 MW
- #34Bear Swamp hydroelectric plant666 MW
- #35Bigstone Pumped Storage hydroelectric plant666 MW
- #36Craig Hayden Pumped Storage hydroelectric plant600 MW
Grid connection · within 50 km
- Nearest substation
- Berkshire 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
- Bear Swamp hydroelectric plant0 m · Power Plant · 666 MW · hydro
- Yankee Rowe nuclear power plant5.5 km · Power Plant · 180 MW · nuclear
On the interactive map
Watercourse: Deerfield River
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)