International oil major Shell and ScotWind development partner ScottishPower have put pens to paper on key option to lease agreements that target construction of 5GW of floating wind projects on acreage won by the pair in the landmark Scottish sector auction earlier this year.

The deal signed with the Crown Estate Scotland clears the way for development of the 3GW Marray, located 75km off the coast in waters of some 100 metres, and the 2GW Campion, 100km out in depths of 77 metres, which are line to be among the first gigascale floating wind farms in the world, and will supply power to 6 million UK homes once online.