Tidal Power, often referred to as tidal energy, is achieved through the capture of the energy created as water moves in ocean currents and tides. Two types of tidal power can be harnessed for energy-efficient power. The first is called kinetic energy. This is tidal power directly created as the water is moving in rivers and in oceans as tides. The tidal power that requires one more step, called potential energy, comes from the difference between low and hide tide height. This height is commonly referred to as head.