VIDEO: Moon Power in Scotland

Twice a day, like clockwork, the moon’s gravity makes the seas ebb and flow.

For Baker, a marine renewables business manager at GE Power Conversion, the tides are the perfect source of energy, more predictable and reliable than wind or solar power. “Some U.K. locations have significant tidal head ranges,” he says. “They offer a tantalizing energy generation potential.”

GE Power Conversion is testing tidal turbine generators and other underwater technology in turbines standing on the sea floor near the Orkneys in Scotland and at Ramsey Sound in Pembrokeshire, Wales.

Baker says that GE is ready to scale up the power system to a large array of tidal turbines planned for the bottom of the Pentland Firth, a narrow channel that separates the Orkneys from the northern tip of Scotland. The channel has some of the fastest moving currents in the U.K.