China's operational new-type energy storage fleet reached 167 GW/435 GWh at the end of September 2026, 63% more than a year earlier, according to figures the National Energy Administration (NEA) released at its quarterly press conference on 30 October.
The category covers electrochemical, compressed-air and other emerging storage systems and excludes conventional pumped hydro. Measured against 135.93 GW/351.12 GWh at the end of 2025, the new numbers imply net additions of roughly 31 GW/84 GWh during the first nine months of 2026.
Duration and utilization both improve
Average storage duration rose to 2.61 hours, about 0.27 hours more than a year earlier, while equivalent utilization hours reached roughly 915 hours over the nine months, some 10 hours above the same period of 2025. Taken together, the figures indicate that expansion is being accompanied by gradual changes in system configuration and operation, not by installed capacity growth alone.
The NEA credits the pace of development to government policy, technological innovation, industrial supply chains and rising demand for flexibility in the power system. The utilization gain points to more intensive dispatch of the installed fleet during the nine-month period.
Renewables build-out drives flexibility demand
Combined wind and solar generating capacity passed 2.01 TW at the end of September, close to 48.7% of China's total installed power capacity. As variable renewable output expands, storage is increasingly needed to absorb surplus electricity, move generation into higher-demand periods and provide fast-response grid services.
Portfolio tilts toward larger, independent projects
Official figures for 2025 show how the composition of the market is shifting:
- Independent storage facilities accounted for 51.2% of cumulative new-type installations.
- Projects rated at 100 MW or above made up 72% of installed capacity.
- Systems with durations of at least four hours represented 27.6% of capacity.
- Lithium-ion batteries held about 96% of installed new-type capacity, while compressed-air, flow batteries and other technologies gradually widen their presence.
With average duration at 2.61 hours, the fleet as a whole is still weighted toward shorter assets, even as four-hour-plus systems account for more than a quarter of installed capacity.
Revenue rules and the 2030 target
Market reform is expected to reinforce these trends. China has been developing arrangements that allow independent storage operators to earn revenue from electricity trading, ancillary services and capacity remuneration, gradually reducing reliance on 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. Closing the gap from the September 2026 level implies adding roughly 133 GW over the remaining years of the decade.
Inner Mongolia shows short-term balancing value
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 that time.
The example shows how storage can provide substantial short-term balancing capacity in electricity 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.