Pumped storage turbine design with a storage tank on the ocean floor offers efficiency comparable to conventional onshore systems.
Severn tidal project promoters says $38bn plan cheaper than wind and nuclear. Alstom snaps up Rolls Royce tidal developer, Infigen lifts Australia wind revenue.
Tenax Energy signs MoU to develop 2MW pilot plant and tropical tidal energy research centre off coast of Northern Territory.
DoE report notes oceans could provide one third of US energy; Spain and the UK wrestle with solar tariffs.
Expat Aussie tidal developer Atlantis Resources says its technology could be competitive with onshore wind within five years. And big industrials are diving in.
