"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.
However, the SDC report concluded that it did not "consider that a large-scale tidal lagoon development in the Severn estuary would offer any environmental or economic advantage over a tidal barrage".
Dounreay Site Restoration Limited's (DSRL) report draws on work commissioned in 1996 and 2003 that considered the threats posed by a tidal wave, either caused by an earthquake or an underwater rock slide.