How Chinese Cities and Firms Built a Global EV Battery Powerhouse

China’s lead in electric-vehicle batteries is attributed to tightly linked national policies, proactive local governments, and continuous corporate innovation, not merely to state subsidies. CATL, founded in Ningde’s development zone, grew within a dense supplier cluster that the city nurtured through land, tax and infrastructure incentives, while BYD benefited from early procurement by Shenzhen and a high-tech zone that gathered over 300 related firms.

CATL operates as a merchant supplier to global automakers, leveraging both LFP and NCM chemistries and advanced cell-to-pack designs, whereas BYD integrates batteries, motors and even chips within its own vehicle platforms, focusing on LFP and system-level optimization. Both companies have introduced semi-solid-state and cell-to-body technologies, reflecting their distinct business models. The analysis warns that foreign rivals cannot rely solely on tariffs or subsidies to narrow the gap; they must invest in large-scale manufacturing, coordinated policy and cluster development. Finally, the authors suggest that the same blend of state coordination and firm organization may shape competitiveness in other high-tech sectors beyond batteries.