Lithium batteries are capable of storing cheaper energy from a power grid instead of a renewable energy source. This stored energy can later be released and re-distributed across an area as and when needed. Energy Storage Systems (ESS) are also called Renewable Energy Storage. It is an advanced technology that uses Lithium-ion cells to capture and store energy generated from renewable energy sources like wind, solar, biomass, etc. Such systems do not release any harmful emissions like those from non-renewable energy sources. They are therefore considered the future of a green energy technology that respects the environment.