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United States › Power plants › Nuclear power plants › Connecticut

NUCLEAR POWER PLANTS

Millstone

Millstone is a 2,260 MW operating nuclear power plant in New London County, Connecticut, operated by Dominion Energy Nuclear Conn Inc.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingDec 1975 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
3Nuclear1,350 MW OperatingApr 1986
2Nuclear910 MW OperatingDec 1975

Plant details

Operator
Dominion Energy Nuclear Conn Inc
Location
New London County, Connecticut
Balancing authority
ISNE
Sector
IPP Non-CHP
Capacity
Operating: 2,260 MW
First unit online
Dec 1975
EIA plant ID
566

Location

41.3107, -72.1677

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