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United States › Power plants › Battery storage › Massachusetts

BATTERY STORAGE · SOLAR FARMS

401 South

401 South is a 1.5 MW operating power plant in Berkshire County, Massachusetts, operated by Madison Energy Investments LLC. Its batteries store up to 2 MWh.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingDec 2023 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
401SBBatteries1.0 MW
2 MWh
OperatingDec 2023
4SPV1Solar Photovoltaic0.5 MW OperatingDec 2023

Plant details

Operator
Madison Energy Investments LLC
Location
Berkshire County, Massachusetts
Balancing authority
SOCO
Sector
IPP Non-CHP
Capacity
Operating: 1.5 MW
First unit online
Dec 2023
EIA plant ID
67241

Location

42.4640, -73.1840

Nearby power plants

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem