"This is a crucial milestone for us, it will be the first array of tidal stream turbines, " observed report co-author Professor AbuBakr Bahaj from the University of Southampton.
"I am delighted to announce that the Welsh government has granted a Marine Licence for the Skerries Tidal StreamArray project, which moves Wales a step closer to hosting the first scheme of this kind in the UK, " said First Minister Carwyn Jones.