Sellafield may have started as early as August 2004, and was categorised as a level 3 event on the International Nuclear Event Scale, resulting in fines. In February 2009, NuGeneration (NuGen), a consortium of GDF Suez, Iberdrola and Scottish and Southern Energy (SSE), announced plans to build a new nuclear power station of up to 3.6GW capacity at Sellafield. In October 2009, NuGen purchased an option to acquire land around Sellafield from the NDA for £70m. On 2 June 2010, Sellafield's gates were closed as a precaution in the wake of a deadly shooting spree and subsequent police manhunt, and the
Heysham nuclear power station 1 unit 1 will operate on six out of the eight boilers until a detailed repair strategy has been developed. The construction, which was undertaken by a consortium known as National Nuclear Corporation (NNC), began in 1979 and the station opened in 1988. Its generating capacity is 1250 MWe, and it is estimated to keep running until at least 2030. Heysham 2 shares its reactor design with Torness nuclear power station and is a development of the reactor design used at Hinkley Point B. The reactors were supplied by NNC and the turbines by NEI. Heysham nuclear power station Heysham