Energy storage plays a crucial role in the transition to a more sustainable and resilient energy system by enabling the integration of intermittent renewable energy sources like solar and wind power. It involves capturing excess energy generated during periods of high production and storing it for later use when demand is high or renewable generation is low. Various technologies are employed for energy storage, including batteries, pumped hydro storage, compressed air energy storage, and thermal storage. Batteries, such as lithium-ion batteries, are commonly used for small to medium-scale applications, offering flexibility and fast response times. Pumped hydro storage utilizes reservoirs to store water at different elevations, allowing for large-scale storage and rapid power generation when needed. Compressed air energy storage involves compressing air into underground caverns or containers and releasing it to drive turbines when electricity is required. Thermal storage systems store heat or cold generated from renewable sources for later use in heating or cooling applications. Energy storage enhances grid stability, reliability, and efficiency while reducing reliance on fossil fuels, thus playing a vital role in enabling the widespread adoption of renewable energy and accelerating the transition to a low-carbon future.