The study, which compared monopiles, conventional jackets, suction bucket technolgies and CGBs, concluded that that designs such as Seatower’s Cranefree Gravity Foundation (CGF) – recently topped with a meteorological mast at EDF’s Fecamp wind development in the English Channel – could deliver “better project economics and lesser project delays” than other foundations for developments using 6-10MW machines.

So-called mono-suction bucket technologies, including Fred Olsen-owned Universal Foundation’s suction bucket foundation and Dong Energy's Suction Bucket Jacket, now being trialled at the Borkum Riffgrund 1 wind farm off Germany, will be the most cost-effective for projects with turbines of around 4MW in waters down to around 40 metres.

“The