China Proposes Solar Technology Export Controls, Threatening Global Manufacturing Expansion

China has outlined proposed export controls covering 12 solar equipment manufacturing technologies, citing national security concerns related to aerospace and defense uses. The plan includes outright export prohibitions on thin-wafer manufacturing, perovskite and tandem solar cells, and fluidized-bed polysilicon production. Advanced solar-cell manufacturing technologies such as TOPCon, HJT, and XBC would face export restrictions rather than complete bans.

The proposed limits target underlying manufacturing expertise rather than finished solar panels. Restricting access to advanced Chinese equipment and processes could raise project costs, delay factory upgrades, and complicate international expansion plans. This includes U.S. manufacturing projects pursued by companies like Tesla, Inc. (TSLA), whose stock traded down 2.13% to $354.70. Overseas manufacturers may need to seek alternative production methods or rely on independently developed processes.

A public consultation on the revised export control catalogue runs through November 15. Until the rules are finalized, exporters are required to register specified overseas technology transfers. The final catalog details and administrative implementation will clarify whether the measures create manageable regulatory hurdles or fundamentally alter the economics of building solar manufacturing capacity outside China.