But according to the authors of the latest research, 2013 could see a big breakthrough in tidal stream power.

BBC: UK tidal power has huge potential, say scientists

"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.

BBC: UK tidal power has huge potential, say scientists

"On top of that there is a 5% tidal stream figure, and with future technological development that is likely to be an underestimate in my view, " he said.

BBC: UK tidal power has huge potential, say scientists