BYD and the State Grid Corporation of China have finished construction on what may be the world’s largest battery energy storage station. This large utility-scale project, located in Zhangbei, Hebei Province, combines 140 MW of renewable energy generation (both wind and solar), 36 MWh of energy storage and a smart power transmission system. While there are renewable generation systems of this scale in service today, there are no battery systems of this size. The State Grid system is demonstrating a stable solution for transferring vast amounts of renewable electricity safely to the grid on an unprecedented scale. Although BYD manufactures 1GW of solar panels annually, its role in this project was primarily providing energy storage batteries in arrays larger than a football field.

BYD’s battery energy storage system provides a solution for the realization of energy storage in the smart grid that improves renewable energy efficiency by 5%-10%.