China's operational new-type energy storage capacity reached 167 GW/435 GWh at the end of September 2026, 63% higher than a year earlier, according to figures the National Energy Administration (NEA) presented at its quarterly press conference on national energy developments on October 30.
The new-type category covers electrochemical, compressed-air and other emerging storage systems, but excludes conventional pumped hydro. Measured against 135.93 GW/351.12 GWh at the end of 2025, the latest total implies a net addition of roughly 31 GW/84 GWh during the first nine months of 2026.
Duration and utilization edge higher
Average storage duration rose to 2.61 hours, about 0.27 hours more than a year earlier, while equivalent utilization hours reached some 915 hours over the nine-month period, roughly 10 hours above the same stretch of 2025.
The figures suggest the build-out is being accompanied by gradual shifts in how systems are configured and used, rather than growth in installed capacity alone. The NEA attributed the expansion to government policy, technological innovation, industrial supply chains and rising demand for flexibility in the power system.
That demand is tied to the scale of variable generation. Combined wind and solar capacity passed 2.01 TW by the end of September, about 48.7% of China's total installed power capacity. As that share grows, storage is increasingly called on to absorb surplus electricity, move generation to higher-demand periods and provide fast-response grid services.
Market structure shifts toward larger, longer systems
Official 2025 figures show independent storage facilities accounting for 51.2% of cumulative new-type installations, projects rated at 100 MW or above making up 72% of installed capacity, and systems of at least four hours representing 27.6%.
Lithium-ion batteries remain dominant at approximately 96% of installed new-type capacity, while compressed-air, flow batteries and other technologies gradually add share.
Market reforms are expected to reinforce those trends. China has been building arrangements that let independent storage operators earn revenue from electricity trading, ancillary services and capacity remuneration, 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 at 300 GW by 2030, with more emphasis on longer-duration systems, grid-forming capability and operational efficiency.
Regional grids show storage's balancing role
The 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 cases illustrate how storage can deliver substantial short-term balancing capacity in systems with high renewable penetration. For other countries scaling up wind and solar, China's deployment offers experience in large-scale storage manufacturing, grid integration and centralized dispatch.