Seabrook Station Nuclear Power Plant

The Seabrook Nuclear Power Plant, more commonly known as Seabrook Station, is a nuclear power plant located in Seabrook, New Hampshire, United States, approximately 40 miles north of Boston and 10 miles south of Portsmouth. Two units were planned, but the second unit was never completed due to construction delays, cost overruns, and troubles obtaining financing. The construction permit for the plant was granted in 1976, and construction on Unit 1 was completed in 1986. Full power operation of Unit 1 began in 1990. Unit 2 has been canceled and most of its major components sold to other plants. With its 1,244-megawatt electrical output, Seabrook Unit 1 is the largest individual electrical generating unit on the New England power grid. It is the second largest nuclear plant in New England after the two-unit Millstone Nuclear Power Plant in Connecticut.

The Public Service Company of New Hampshire initially sought plans for building a nuclear power plant in 1966. PSNH initially planned for building the plant in Newington, but the construction permit was denied after concerns of the proposed site being too close to Pease Air Force Base. After the new location of Seabrook was selected, construction plans were finalized in 1972. PSNH originally proposed the first unit coming online by 1979, the second unit coming online by 1981, and a total cost of less than $1 billion.

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