Atlantis Resources of Singapore has tidal power projects planned in Scotland and Australia. The Scotland project could eventually output 1GW, as much as a large coal plant, of clean, renewable energy. Huge data centers housing tens of thousands of computers may be built there, with the electricity coming from tidal power.
The photos shows one of their underwater tidal turbines. A major advantage of tidal power is its reliably. The tides are always flowing and ebbing, and in a manner that can be known ahead of time.