According to the Agonist Learning Center, wind energy is stored by compressed air energy storage, and by using batteries and hydrogen fuel cells. Storing wind energy that is generated when the wind is strong and utilizing it when there isn't enough wind enhances the usability of wind energy.
The Agonist Learning Center explains that compressed air energy storage involves the conversion of wind energy generated by wind turbines into compressed air that can be utilized in the production of electricity when there is not enough wind. This compressed air is usually stored in underground caverns or above-ground tanks. Additionally, the electricity from wind turbines are also used to split molecules of water into hydrogen and oxygen. The hydrogen separated during this process is then stored in fuel cells for the generation of electricity when there is no wind.