up to 25GW worth of wind farm offshore sites in preparation for a new round of development. These proposed sites were in addition to the 8GW worth of sites already awarded in the two earlier rounds of site allocations, Round1 in 2001 and Round2 in 2003. Taken together it was estimated that this would result in the construction of over 7,000 offshore wind turbines. In 2010, 653MW of offshore wind came online. The following year, only one offshore wind farm, phase1 of the Walney Wind Farm, was completed in 2011 with a capacity of 183MW. On 28 December 2011 wind power set a then record contribution to the United Kingdom's demand for electricity of 12.2%. 2012 was a significant year for the offshore wind industry with 4large wind farms becoming operational with over 1.1GW of generating capability coming on stream. In the year July 2012 to June 2013, offshore wind farms with a capacity of 1.463GW were installed, for the first time growing faster than onshore wind which grew by 1.258 GW. The offshore wind industry continued to develop in 2013 with what was once the largest wind farm in the world, the London Array, becoming operational with over 630MW of generating capability coming on stream. During 2013, 27.4TWh of energy was generated by wind power, which contributed 8.7% of the UK's electricity demand. On 1 August 2013, Deputy Prime Minister Nick Clegg opened the Lincs Offshore Wind Farm. On commissioning the total capacity of wind power exceeded 10GW of installed capacity. In 2014, Prime Minister David Cameron said that people were "fed up" with wind turbines being built close to homes; onshore wind subsidies were removed and in 2015 planning rules changed to give local authorities strong controls on wind turbine development, greatly reducing onshore deployment. During 2014, 28.1TWh of energy was generated by wind power (an average of 3.2GW, about 24% of the 13.5GW installed capacity at the time), which contributed 9.3% of the UK's electricity requirement. In the same year, Siemens announced plans to build a £310million ($264million) facility for making offshore wind turbines in Paull, England, as Britain's wind power capacity rapidly expanded. Siemens chose the Hull area on the east coast of England because it is close to other large offshore projects planned in coming years. The new plant began producing turbine rotor blades in December 2016. The plant and the associated service centre, in