China has built more wind and solar capacity than its power system can consistently use. Bloomberg reported that official figures suggest about 9% of potential wind and solar generation was curtailed in the first half of 2026, meaning it was available but never delivered because the grid or demand could not absorb it. Bloomberg said the official figure likely understates the problem.
Renewable power is far from demand
The mismatch is visible in Gansu, where the Jiuquan area has more than 20 gigawatts of wind capacity. Much of that electricity must travel hundreds of kilometers to reach major cities and industrial centers.
The Centre for Research on Energy and Clean Air estimates China could have generated an additional 401 terawatt-hours during the first six months of 2026.
That surplus could still become an advantage in the AI race. Western regions that produce more electricity than they consume are becoming hubs for power-hungry servers. BloombergNEF expects Gansu and Inner Mongolia to rank among China's top computing hubs by 2028 and projects that the country will double its data-center capacity over five years.
The grid needs storage and new markets
Moving more renewable power will require long-distance transmission, batteries and pumped-hydro storage. China had 144 gigawatts of grid-scale battery capacity at the end of 2025, more than the rest of the world combined, according to BloombergNEF.
The research group estimates China will need $3.9 trillion of grid investment through 2049. That is a projection of the country's infrastructure needs, not an approved spending plan.
Electricity trading is also changing. Short-term trades accounted for 12% of transactions in the first half of 2026, up from just over 4% in 2025. Beijing has set a goal of creating a unified national power market by 2030 and has introduced market reforms covering renewable contracts, transmission costs and green-energy certificates.
China's renewable supply gives it a large pool of potential power for AI infrastructure. Turning that potential into usable electricity depends on whether the grid can move and store energy when demand calls for it.
