China installed 110.83 gigawatts of new solar capacity in the first nine months of 2026, down 53.9% from the same period last year, according to National Energy Administration data released Oct. 26, even as the country's combined wind and solar fleet passed 2,000 GW for the first time.

The slowdown matters well beyond China's borders. China is the largest buyer of the panels, inverters and polysilicon made by listed companies in Shanghai, Shenzhen and Hong Kong, and a halving of domestic demand leaves those suppliers more exposed to export markets and to price competition. For utilities and coal miners across the region, the same data show China still adding fossil-fuel plants at a brisk pace.

September Rebound for China Solar

There was a better signal in the latest month. Installations reached 13.64 GW in September, 41.2% more than a year earlier and 23.6% above August, Green Building Africa reported, citing the NEA figures. The publication tied the pickup to adjustments in China's renewable pricing mechanism.

The comparison base explains much of the headline decline. The Centre for Research on Energy and Clean Air (CREA), a Helsinki-based research group, said solar additions in January through August were 97.2 GW, down 58% from what it called a very high 2025 base. Wind additions over those eight months fell a more modest 8% to 53.3 GW.

Cumulative solar capacity still grew. It stood at about 1,310 GW at the end of September, up 16.5% from a year earlier, while wind capacity reached about 700 GW, up 20.4%, according to the NEA figures reported by China News Service. Together, the two sources reached 2,010 GW. China added about 170 GW of wind and solar capacity in the nine months, the agency said.

Wind and Solar Output Covers Most Demand Growth

Generation is where the build-out shows up. Wind and solar plants produced 1.9333 trillion kilowatt-hours in the first three quarters, an increase of 193.7 billion kWh from a year earlier, the NEA said. That increase equaled 64% of the growth in China's total electricity consumption over the period. On the day of peak summer demand, wind and solar supplied more than 40% of the system load around midday, according to the agency.

The agency also said investment in wind and solar made up roughly a third of China's total energy investment in the first nine months.

Monthly output data from the National Bureau of Statistics, which cover large industrial generators, point the same way. In September, solar generation rose 19.5% and wind 10.6% from a year earlier, while thermal output fell 1.4% and total generation slipped 1.2%. Weak thermal generation has coincided with lower coal production: Capital Times reported that China's coal output fell 6.8% in September as prices climbed ahead of winter.

CREA estimated that coal-fired generation declined for a third consecutive month in September, a figure it derives by splitting the official thermal total between coal and gas.

Thermal Plants Keep Coming

The capacity data tell a different story for fossil fuels. China added 66.25 GW of thermal capacity in the first nine months, 9.57 GW more than a year earlier, according to the NEA figures reported by SolarQuarter. CREA said thermal additions for January through August were the highest for that period in 15 years.

More plants and flat thermal output add up to lower utilization. Average cumulative utilization across China's generators was 2,174 hours in the nine months, 194 hours fewer than a year earlier. Total installed generating capacity reached 4,132 GW at the end of September, up 11.2%. Thermal capacity grew 6.0% to about 1,590 GW, nuclear 9.7% to 68.54 GW and hydropower 3.3% to 457.25 GW.

For investors in Chinese generators, falling hours on a larger asset base weigh on returns, and the shift toward market trading is changing how power is sold. National electricity trading volume rose 18.9% to 5,853.6 billion kWh in the first nine months, according to NEA data reported by Xinhua Finance, with spot trading accounting for 634.7 billion kWh.

For the solar supply chain, the year-end quarter is the test. Battery maker CATL reported slower profit growth last month as China's battery taxes squeezed margins, and panel makers face a domestic market that, even with September's pickup, is running at less than half last year's pace. The NEA's October capacity figures, due in late November, will show whether the September rebound held.