Energy storage refers to the methods and technologies used to save energy for later use. This is important because energy production, like from solar panels or wind turbines, can be inconsistent. By storing energy, we can ensure that we have power available when we need it, even if the sun isn't shining or the wind isn't blowing. Common forms of energy storage include batteries, pumped hydro storage, and compressed air storage. These systems capture excess energy during peak production times and release it during high demand. This helps balance the energy supply and supports a more reliable and sustainable energy system.