Seabrook is a town in Rockingham County, New Hampshire, United States. The population was 7,979 at the 2000 census. Located at the southern end of the coast of New Hampshire on the border with Massachusetts, Seabrook is noted as the location of the Seabrook Nuclear Power Station, the last nuclear power plant constructed in the United States.
The Seabrook Nuclear Power Plant, more commonly known as Seabrook Station, is a nuclear power plant located in Seabrook, New Hampshire, approximately 40 mi north of Boston and 10 mi (16 km) south of Portsmouth, NH. Initially two units (reactors) 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 cancelled and most of its major components sold to other plants.
The plant was originally owned by more than 10 separate utility companies serving 5 New England states. In 2002, most sold their shares to FPL Energy (a subsidiary of FPL Group). FPL Energy now owns 88.2% of Seabrook Station.
The remaining portion is owned by municipal utilities in Massachusetts.
The station is one of five nuclear generating facilities operated by FPL Group. The other four are St. Lucie Nuclear Power Plant and Turkey Point Nuclear Generating Station operated by Florida Power and Light (a regulated utility), and the Duane Arnold Energy Center and Point Beach Nuclear Generating Station operated by independent power subsidiary FPL Energy.
According to the United States Census Bureau, the town has a total area of 9.6 square miles (24.9 km²), of which, 8.9 square miles (22.9 km²) of it is land and 0.8 square miles (1.9 km²) of it is water, comprising 7.80% of the town. The highest point in Seabrook is 217 feet (66 meters) above sea level on Grape Hill, whose 230-foot (70 meter) summit lies just south of the town line in Salisbury, Massachusetts.