BEIJING — China’s Ministry of Commerce has proposed sweeping export controls on 12 critical technologies used in solar equipment manufacturing, marking a significant escalation in the global battle for green technology supremacy. Citing national security concerns, the move signals Beijing’s intent to weaponize its overwhelming dominance in the global solar supply chain, mirroring the export restriction strategies previously employed by the United States in the semiconductor sector.
In a statement released on Friday, the ministry announced that the proposed additions to China’s export-control catalogue are necessary because advanced solar technologies are increasingly being dual-used in sensitive sectors, including aerospace and national defense. The ministry stated that the restrictions aim to “guard against the risks of technologies running out of control or being improperly disseminated, while safeguarding normal international exchanges and cooperation in science and technology.”
The Technology at Stake: Banned vs. Restricted
The proposed controls draw a sharp line between technologies that will be outright banned from export and those that will face stringent licensing requirements.
Under the new framework, China would ban the export of technologies used to manufacture:
Ultra-thin wafers: Critical for reducing material costs and weight in next-generation panels.
Perovskite and tandem solar cells: Perovskite is a rapidly emerging material that offers the potential for dramatically increased conversion efficiency. Tandem cells, which combine perovskite and silicon layers, are widely considered the future of solar technology, capable of capturing a much broader spectrum of sunlight than traditional silicon-only cells.
Large-scale fluidized-bed polysilicon production: Polysilicon is the foundational building block of all solar panels. The fluidized-bed process is significantly less expensive and more energy-efficient than the dominant, older Siemens process, giving any manufacturer who possesses it a massive cost advantage.
Additionally, China would restrict, but not outright prohibit, the export of advanced solar cell manufacturing technologies, including TOPCon (Tunnel Oxide Passivated Contact), HJT (Heterojunction Technology), and XBC (Back Contact) architectures. These represent the current cutting edge of commercial silicon solar efficiency, and restricting them would force foreign competitors to rely on older, less efficient Chinese manufacturing lines.
Geopolitical Chessboard: US and India in the Crosshairs
Analysts widely interpret this move as a defensive maneuver to preserve China’s stranglehold on the global solar market, which currently accounts for over 80% of the world’s manufacturing capacity across all stages of the supply chain.
The timing directly threatens the ambitions of the United States and India, both of which are aggressively pouring billions into domestic manufacturing to shake off their reliance on Beijing. In the US, the Inflation Reduction Act (IRA) has spurred massive investments in domestic solar supply chains. Companies like Tesla have announced ambitious plans to expand US-based solar production, but these initiatives rely heavily on importing advanced manufacturing equipment and expertise from China. The proposed curbs could severely delay or derail these expansion plans.
Similarly, India has been actively trying to build up its domestic solar manufacturing base under its "Make in India" initiative. However, Reuters reported earlier this year that Beijing has already begun informally curbing the export of solar-manufacturing technology to India. By formalizing these restrictions, China is effectively attempting to cap India’s technological ceiling, ensuring that New Delhi remains a consumer of finished Chinese solar panels rather than a competitive manufacturer.
Immediate Regulatory Impact
While the proposal is still open for public consultation until November 15, the Chinese government is not waiting for the formal update to exert control. The ministry has mandated that, effective immediately, exporters must register certain overseas technology transfers with authorities. This interim measure gives Beijing real-time visibility into the flow of green tech knowledge and allows it to block suspicious transfers before the formal catalogue is updated.
A New Era of Green Tech Nationalism
China’s proposed export controls represent a pivotal turning point in the global energy transition. For the past two decades, the proliferation of Chinese solar technology has been the primary driver behind the dramatic 90% collapse in the cost of solar power globally, viewed largely through the lens of climate cooperation.
Today, that narrative has fundamentally shifted. Solar technology is now viewed through the prism of national security, economic statecraft, and supply chain sovereignty. By locking down the intellectual property and manufacturing processes for the next generation of solar tech, China is sending a clear message: it is willing to sacrifice short-term equipment sales to ensure that the rest of the world remains permanently dependent on its technological roadmap.
As the November 15 consultation deadline approaches, global solar developers, equipment manufacturers, and policymakers will be watching closely. If enacted, these controls will not only reshape the economics of the global solar industry but also accelerate the fragmentation of the world’s green energy supply chains into competing, geopolitically aligned blocs.
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