But there are other types of hydropower that harness marine currents, tidal energy and wave energy, also referred to as marine current energy. Tidal stream turbines work much like submerged windmills, ...

The vertical rise and fall of the tides — driven by the gravitational forces of the moon and sun acting on the oceans’ waters — also causes motion of water called currents within bays, harbors and ...

It uses lift generated by tidal flows to fly patterns faster than the currents, harvesting renewable energy. Solar energy is the bedrock of most renewable energy grid plans – but lunar energy is even ...

A Swedish start-up company is generating electricity from low-velocity tidal currents with a system of underwater kites called "Deep Green." The kites are equipped with turbines tethered to the ocean ...

Tidal power technology is one of the newest forays into alternative energy. Its development has a long way to go, but its potential is raising science eyebrows around the country. Right now, that ...

Deception Pass, located about 80 miles from Seattle, is the name of the strait that divides Whidbey and Fidalgo islands. It is a site that has potential to produce tidal energy. Jonathan Elderfield AP ...