Each unit of power fed into the grid from a marine renewable machine earns about five times more than power generated by a fossil fuel.

BBC: Tidal power gets a stormy birth off coast of Scotland

Other factors that will increase storage capacity growth are the creation and sharing of user generated content and the growth of machine to machine communication (and thus information storage) such as smart grid networks, video surveillance, big science in astronomy and physics and other emerging automated users of storage capacity.

FORBES: Is 4 Terabytes Enough?