BYD’s New 14.5 MWh Haohan BESS: Pushing Energy Storage Performance & Cost Past Tipping Points - CleanTechnica

BYD has launched its new “Haohan” Battery Energy Storage System (BESS), featuring a substantial 14.5 MWh capacity—nearly three times that of Tesla’s 5 MWh Megapack 3. When housed in a typical 20 ft container used in China, the system delivers 10 MWh, representing a 50% capacity increase over leading competitors. Alongside the battery, BYD introduced the GC Flux grid-forming inverter, which offers a 38% performance boost and a high power density of 1,474 kW/m². This inverter supports overloads up to three times its rating for short durations and includes advanced grid-forming capabilities such as inertia response and rapid voltage and frequency control. Complementing these hardware advancements, the GC Master EMS system enhances computing power by 400%, managing up to 10 million data points for optimized system control. The integration of automotive-derived technologies, such as the Blade Battery and IP66-rated protection, enhances