There are various types of marine energy, including wave, tidal stream, tidal range and
offshore wind, as well as ocean thermal, ocean current, run-of-river and salinity.
Moving water has 1000 times more kinetic energy than air.
Waves are formed by winds blowing over the surface of the sea. The size of the waves generated will depend upon the wind speed, its duration, and the distance of water over which it blows (the fetch), bathymetry of the seafloor (which can focus or disperse the energy of the waves) and currents.
The resultant movement of water carries kinetic energy which can be harnessed by wave energy devices.
Tidal streams are created by the constantly changing gravitational pull of the moon and sun on the world's oceans.
Tidal energy is available 24/7 along coastlines.Tides are predictable
Tidal energy is a global resource representing an estimated potential between
160 - 810 GW capable of providing up to 5% of global electrical demand
Installed marine energy capacity (GW) 2016 (GW)
Installed marine energy capacity by state
List of Marine energy companies