Today, many cities are powered by a symphony of renewable energy technologies. Solar power is a prominent technology that produces energy from an abundant source of light: the sun. Solar energy is harvested based on the principles of photovoltaics. While the sun is an intermittent energy source, it is available globally to provide clean energy to cities and homes.

Generated by the natural rise and fall of ocean tides and currents, tidal current energy is global and abundant, making it a valuable untapped source of renewable energy. This energy can be harnessed using either seabed-mounted or floating tidal current turbines. Tidal energy technologies can capture energy from currents in both oceans and rivers.