Energy storage systems work by capturing and storing electricity for later use. They typically employ batteries to store the excess energy generated by renewable sources such as solar or wind. When demand is high or renewable sources are not producing enough power, the stored energy is discharged to meet the demand.

The benefits of energy storage systems include increased utilization of renewable energy, energy independence during outages, reduced reliance on the grid, cost savings, improved integration of renewables, and reduced greenhouse gas emissions.