Nuclear power in the United Kingdom a total of 12.5GW of new nuclear capacity, slightly more than the total capacity of British Energy's currently operating plants. In 2009 government officials believed a carbon price floor would be needed to encourage companies to commit funds to nuclear build projects. In November 2009, the Government identified ten nuclear sites which could accommodate future reactors: Bradwell in Essex; Braystones in Cumbria; Kirksanton in Cumbria; Sellafield in Cumbria; Hartlepool in County Durham; Heysham in Lancashire; Hinkley Point in Somerset; Oldbury in Gloucestershire; Sizewell in Suffolk; and Wylfa in North Wales Most of these sites already have a nuclear power station;
Wylfa Nuclear Power Station nuclear station on a site adjacent to the old plant. An application to build two advanced boiling water reactors was submitted by Horizon Nuclear Power to the Office of Nuclear Regulation on 4 April 2017. Wylfa was the second nuclear power station to be built in Wales after Trawsfynydd in 1959. Following the closure of Trawsfynydd in 1991, Wylfa became Wales' only nuclear power station. Construction of Wylfa, which was undertaken by British Nuclear Design & Construction (BNDC), a consortium backed by English Electric, Babcock & Wilcox Ltd and Taylor Woodrow Construction, began in 1963. The reactors were supplied by