The U.K. approved construction of one of the biggest offshore wind farms as the country chases a European Union target to get 15 percent of all energy from renewables by 2020.

The consent allows Dong Energy A/S to install up to 750 megawatts of turbines at the Walney Extension project in the Irish Sea off northwest England’s Cumbria, the Planning Inspectorate said today in an e-mailed statement. Denmark’s Dong said it expects to put in about 660 megawatts of turbines, enough to power as many as a half-million homes.