Energy storage technologies are systems that capture and store energy for later use. They play a crucial role in balancing supply and demand, especially with renewable energy sources like solar and wind. Common types include batteries, pumped hydro storage, and compressed air energy storage, each with unique advantages and applications. These technologies help improve energy efficiency and reliability by providing backup power during outages and stabilizing the grid. As the demand for clean energy grows, advancements in energy storage are essential for integrating more renewable energy into our daily lives and reducing reliance on fossil fuels.