BYD Unveils World’s Largest Integrated Battery Storage System at SNEC 2026
BYD introduced its new integrated energy storage platform, Haohan, at SNEC 2026, targeting utility-scale energy projects. The company claims the system, with a storage capacity of 14.568 MWh, is the world’s largest integrated battery energy storage system (BESS), combining battery storage and energy management functions into a single platform.
The Haohan platform features an integrated architecture that combines the battery energy storage system with an energy management system. Its in-house developed power conversion system (PCS) delivers a conversion efficiency of 98.3%, while the platform uses high-capacity 2,710 Ah battery cells—significantly larger than the roughly 500 Ah cells commonly used in many commercial storage systems.
Built with lithium iron phosphate (LFP) battery technology, the system includes an IP66-rated enclosure and liquid cooling for enhanced durability. It is designed to operate in temperatures ranging from -30°C to +55°C and at altitudes of up to 3,000 meters. BYD said the Haohan platform is available for global markets, has already been deployed in selected projects, and is scheduled to begin commercial deliveries next month.
