In 2014, 28.1 TW·h of energy was generated by wind power, which contributed 9.3% of the UK's electricity requirement.[11] 1.3 GW of new wind power capacity was brought online during 2014, a 12% increase of the total UK installed capacity. The largest wind farms to come on stream in 2014 were Harestanes onshore (136 MW max. capacity) and West of Duddon Sands offshore (389 MW).