Dong, which has built more than a quarter of the world’s existing offshore wind capacity, had ventured into wind at sea in 1991 with the construction of the 5MW Vindeby array off Denmark that features 11 0.45MW turbines.

The utility this year pioneered again, with the installation of the first of MHI Vestas V164 8MW machines at the 258MW Burbo Bank Extension in UK waters.

"In