Large battery storages that store and reconvert electricity can help India's electricity grids, given the intermittent nature of power from clean energy sources such as solar and wind. India already has 100 GW of solar and wind capacity, and is adding another 63 GW. A planned renewable capacity of 450 GW by 2030 can threaten the grid's stability in case of generation outages due to cloud cover, rains, or wind dying down affecting renewable energy production. Large grid-scale battery storage can help in such a scenario, ensuring the grid frequency remains in the range of 49.9-50.05 hertz (Hz).

India is working on the world’s largest grid-scale battery storage programme, including a 13 gigawatt-hour (GWh) facility in Ladakh and a 14 GWh system in Kutch. In comparison, the world’s highest installed storage capacity is 400 megawatt-hour (MWh). Mint explores: