Energy secretary John Hutton has approved the UK's fourth largest offshore wind farm off the coast of Norfolk. The 315MW offshore scheme (Sheringham Shoal) will comprise of up to 108 turbines, enough to power the equivalent of around 178,000 homes. Hutton said: "Sheringham Shoal will be the UK's fourth largest offshore wind farm approved to date and will help provide a significant contribution towards our renewable energy targets. "Companies want to build here because we have made the UK one of the most attractive places to invest in wind power. By the end of 2009 a further 626MW of offshore wind power will be plugged in to the grid, making us world leaders.