Battery storage refers to the technology that allows energy to be stored in batteries for later use. This is particularly important for renewable energy sources like solar power and wind energy, which can produce electricity intermittently. By storing excess energy generated during peak production times, battery systems can provide power when demand is high or when production is low. These storage systems come in various sizes, from small units for homes to large installations for businesses and utilities. They help improve energy reliability, reduce costs, and support the transition to a cleaner energy grid by making renewable sources more viable and efficient.