Michael Hannibal, Siemens Wind Power chief executive of offshore wind for ­Europe, the Middle East and Africa, tells Recharge that it is working ­simultaneously on three projects.

The group is putting in place the last turbines at Greater Gabbard while installing at Sheringham Shoal and working flat out on the giant 630MW London Array.

Hannibal says 79 turbines have been installed in the Thames Estuary at London Array — owned by Dong Energy, E.ON