following power stations: In 2005, British Energy announced a ten-year life extension at Dungeness B, that would see the station continue operating until 2018, and in 2007 announced a five-year life extension of Hinkley Point B and Hunterston B until 2016. Following an outage in 2006 when an increase in creep-induced defect in boiler tubes was observed, Hinkley Point B and Hunterston B were restricted to about 70% of normal output from 2007 and operated at reduced boiler outlet temperatures. After recovery, operation at 80% of the nominal output was allowed. In December 2009, it was announced that new stations would be built at existing land owned around Sizewell and Hinkley Point stations. Dungeness was considered but was thought to be a poor choice for a new build. See also Nuclear power in the United Kingdom Energy use and conservation in the United Kingdom List of companies based in London References External links Estimated reactor closure dates, House of Lords Hansard column WA232, 24 February 2005 Risk Management: The Nuclear Liabilities of British Energy plc, NAO report HC 264 2003–04 The restructuring of British Energy, NAO report HC 943 2005–06 Companies formerly listed on the London Stock Exchange Companies of Scotland Defunct companies based in London Defunct electric power companies of the United Kingdom Electric power generation in the United Kingdom Électricité de France Energy companies established in 1995 Former nationalised industries of the United Kingdom Non-renewable resource companies established in 1995 Non-renewable resource companies disestablished in 2009 1995 establishments in the United Kingdom 2009 disestablishments in the United Kingdom Nuclear power companies of the United Kingdom Utilities of the United Kingdom