China's operational new-type energy storage capacity reached 167 GW/435 GWh at the end of September 2026, up 63% year on year, according to figures the National Energy Administration (NEA) released on October 30.
The numbers were presented at the agency's quarterly press conference on national energy developments. China's new-type storage category covers electrochemical, compressed-air and other emerging systems, but excludes conventional pumped hydro.
Measured against 135.93 GW/351.12 GWh at the end of 2025, the latest figures point to a net addition of roughly 31 GW/84 GWh during the first nine months of 2026.
Average storage duration rose to 2.61 hours, about 0.27 hours more than a year earlier. Equivalent utilization hours reached around 915 over the nine-month period, roughly 10 hours above the same stretch of 2025, the NEA reported.
The agency reads those gains as a sign that China's storage expansion is being accompanied by gradual changes in how systems are configured and operated, rather than growth in installed capacity alone. It attributes the build-out to government policy, technological innovation, industrial supply chains and rising demand for flexibility in the power system.
Renewable growth raises the balancing requirement
Combined wind and solar generating capacity passed 2.01 TW by the end of September, equal to about 48.7% of China's total installed power capacity. As variable renewable output expands, storage is increasingly called on to absorb surplus electricity, shift generation to higher-demand periods and deliver fast-response grid services.
Market structure shifts toward larger, longer systems
Official figures for 2025 showed independent energy storage facilities accounting for 51.2% of cumulative new-type installations. Projects rated at 100 MW or above represented 72% of installed capacity, while systems with durations of at least four hours made up 27.6%. Lithium-ion batteries remained the dominant technology at approximately 96% of installed new-type capacity, with compressed-air, flow batteries and other options gradually widening their presence.
Reforms, targets and a regional example
Market reforms are expected to reinforce these trends. China has been developing arrangements that let independent storage operators earn revenue from electricity trading, ancillary services and capacity remuneration, gradually reducing reliance on the mandatory storage requirements attached to renewable projects. Under the 15th Five-Year Plan for power system development, new-type storage capacity is targeted to reach 300 GW by 2030, with greater emphasis on longer-duration systems, grid-forming capability and operational efficiency.
Storage's growing contribution is already visible in renewable-rich regional grids. In western Inner Mongolia, the grid operator reported 20.23 GW/70.47 GWh of operational storage capacity in October; during emergency dispatch operations, storage supplied up to 12.25 GW, equivalent to 33% of the grid's electricity demand at the time.
Such examples illustrate how storage can provide substantial short-term balancing capacity in systems with high renewable penetration. For other countries expanding wind and solar generation, China's deployment offers experience in large-scale storage manufacturing, grid integration and centralized dispatch.