Wind turbine electricity is stored in an underwater battery

 Wind turbine electricity is stored in an underwater battery

Wind turbine electricity is stored in an underwater battery

Ocean Grazer, a Dutch firm, proposes storing energy using batteries made from inflated cylinders on the seabed near wind turbines.

The concept is predicated on the assumption that by using extra energy to overcome Earth's gravity, the system will eventually return to its former state, committing meaningful work and rotating the generator.

Ocean Grazer recommends that the gravity of the near-bottom layer of water be used. 

If you pressurise the liquid and then open the valve, the pressured water from above will compress the liquid back into the flexible cylinder, pumping the flow through the compartment containing the turbines.

 Source: Technology