The global energy storage system (ESS) market based on lithium-ion batteries expanded in 2025. According to ET News and Ddaily, SNE Research reported that global shipments of lithium-ion batteries for ESS by manufacturers totaled 550 GWh in 2025, up 79% from 307 GWh in 2024, reflecting strong growth momentum. However, China alone accounted for more than 60% of the total. Unlike electric vehicle (EV) batteries, which are installed in vehicles and then sold to consumers, ESS batteries are typically deployed directly into regional projects. As a result, there is little discrepancy between shipment volumes and actual installed capacity.