The loan follows another £250m loan by the bank in June 2010 for the project, bringing the total financing to £500m.

The funding forms a part of Dong Energy's strategy to diversify its funding on various loan types and to fund projects out of the parent company. Dong owns 50% of the farm, with 30% owned by E.ON and 20% held by Masdar.

The first phase of the London Array wind farm will have a capacity of 630MW from 175 turbines and is expected to begin operation in 2012.