The frenetic expansion of China’s battery sector is showing signs of a significant cooldown, according to the latest data from the China Passenger Car Association (CPCA). In May 2026, the nation’s total output for power and other batteries reached 192 GWh, representing a 38% year-on-year increase. While these figures remain substantial, they mask a broader trend of deceleration within the industry that has powered China’s green energy dominance.
According to CPCA Secretary-General Cui Dongshu, the growth rate for battery production has plummeted from a peak of over 69% down to 30% for the first five months of the year. This sharp drop-off highlights a transition from a period of explosive, subsidy-driven growth to a more precarious phase of market saturation and cooling demand. From January to May, total production reached 863 GWh, yet the pace at which these units are being integrated into vehicles is lagging significantly.
A concerning disparity has emerged between manufacturing output and actual domestic utilization. While lithium battery installations for the first five months of 2026 reached 259 GWh—a 7% increase—this figure is dwarfed by the 863 GWh produced during the same period. This suggests that a vast amount of capacity is either being funneled into inventory or redirected toward stationary energy storage and international export markets.
The slowing momentum in the power battery sector is directly tied to a cooling domestic electric vehicle (EV) market. As the initial wave of early adopters plateaus and economic headwinds persist, the demand for new power units has failed to keep pace with the massive manufacturing infrastructure built over the last decade. Manufacturers now face the dual challenge of managing oversupply while navigating a more competitive and price-sensitive consumer landscape.