China has proposed export controls on 12 technologies used to manufacture solar equipment, a move that could complicate efforts by India and other countries to build more of their own solar supply chains. The proposal covers processes involved in making polysilicon, silicon wafers and photovoltaic cells, including some advanced cell designs. It is part of a broader technology-catalogue review that also includes artificial intelligence and biotechnology.
The important distinction is that the proposed controls are not a blanket ban on solar panels or finished modules. China’s Ministry of Commerce and Ministry of Science and Technology are consulting on changes to the country’s list of prohibited and restricted technology exports. At the same time, exporters must register certain transfers of the technologies listed in the draft before export while the catalogue revision is pending. The consultation opened on October 16 and closes on November 15, according to the official notice from China’s Ministry of Commerce.
Which solar technologies are in the proposal?
Reuters’ reporting on the draft says China proposes prohibiting exports of certain technologies used to make thin silicon wafers, perovskite and tandem solar cells, as well as large-scale fluidised-bed polysilicon production. It would also place restrictions—rather than a full prohibition—on technology used for advanced cell architectures including TOPCon, heterojunction (HJT) and XBC.
Those categories matter because they sit at different points in the solar supply chain. Polysilicon is a high-purity raw material. It is processed into ingots and sliced into thin wafers, which are then turned into photovoltaic cells and assembled into modules. Limits on the transfer of process know-how or key equipment can affect how quickly a new factory gets from construction to qualified production, even if the buyer can still purchase finished panels.
Perovskite and tandem cells are notable because they could raise conversion efficiency beyond conventional single-junction silicon designs. Tandem cells layer materials—often perovskite over silicon—to capture more of the sunlight spectrum. Fluidised-bed reactors are also strategically relevant because the process can use less energy and cost less than the conventional Siemens route for producing polysilicon. These are manufacturing capabilities, not just product models that can be ordered off a catalogue.
Reuters’ report on the proposal says Beijing is citing national-security concerns and the growing use of solar technologies in sensitive areas such as aerospace and defence. The proposed list forms part of a wider review covering 40 technologies in AI, biomedicine and photovoltaics.
The controls are proposed—but registration has already begun
It would be premature to report that all of these export controls are now final rules. The ministries are still seeking public feedback on the revised catalogue through November 15, after which the final scope and policy treatment may change. However, the official October 16 notice also establishes an interim registration requirement: until the updated catalogue is formally implemented, exporters must register before transferring covered technologies overseas.
The notice says the registration framework covers certain technology transfers such as transferring ownership or intellectual property rights, licensing domestic technology for use overseas, and changing ownership or effective control to a foreign entity. That distinction matters to manufacturers considering technical licensing, joint ventures or transfer of process know-how. The new procedure is more specific than a general warning that China may restrict exports, but it should not be confused with an outright suspension of every transaction.
Why India has reason to pay attention
India has expanded solar-module manufacturing rapidly, but the supply chain is much less developed further upstream. A recent Financial Express analysis of India’s solar supply chain put module manufacturing capacity at about 260 gigawatts, compared with roughly 38 GW of solar-cell capacity. It also cited industry estimates that China supplied about 95% of India’s solar-cell imports in the last fiscal year.
Those numbers are not directly interchangeable: nameplate capacity does not guarantee that factories are fully operational, and not every gigawatt of capacity is available for domestic buyers. But the gap illustrates a structural challenge. India can assemble modules at scale and still depend on imports for cells, wafers, specialised equipment, production processes and upstream materials.
That is why restrictions on manufacturing know-how could matter more than a routine change in panel prices. If a technology transfer or equipment project is delayed, a company may take longer to commission a cell line, improve yields or move from an established process to a higher-efficiency design. The precise impact will depend on which technologies make it into the final list, how the restrictions are licensed and whether Indian firms can obtain alternatives elsewhere.
India has already been trying to move upstream. In March, Reuters reported that India planned to require locally manufactured solar ingots and wafers for eligible clean-energy projects from June 2028, building on local-cell requirements introduced earlier. The government’s objective is to capture more of the value chain at home rather than rely mainly on module assembly. The new Chinese proposal could make access to technology and equipment an even more important variable in that transition.
What this does—and does not—mean for solar projects
There is no basis yet to conclude that the proposal will immediately stop Indian solar installations or make every imported module more expensive. The draft focuses on specified technologies and technology transfers. It is not presented as a blanket restriction on shipments of finished solar modules, and the final list may differ from the draft.
The risk is more concentrated in the medium term: factories that rely on Chinese process know-how or equipment could face extra registration, licensing or compliance steps for covered transfers. That could affect commissioning schedules and technology upgrades. If restrictions become more binding, manufacturers may need to find alternative suppliers, redesign projects around available equipment or spend more time developing local engineering expertise. Each route carries time and cost trade-offs, though the size of any effect cannot be quantified from the proposal alone.
China has already limited some exports of solar-manufacturing technology to India, Reuters has reported. The latest draft therefore arrives against an existing backdrop of technology and supply-chain friction rather than starting from a completely open market. It may also affect US and other foreign manufacturers trying to develop new solar capacity outside China.
What Indian manufacturers and policymakers should watch
The immediate next milestone is the end of China’s consultation on November 15. Companies should track the final catalogue language and any licensing or registration guidance rather than assuming the draft will be adopted word for word. For firms planning a new manufacturing line, contracts should make clear who is responsible for export registration, technology licensing and replacement equipment if a proposed transfer is delayed or denied.
India’s longer-term response is less about reacting to a single notice and more about reducing the most fragile links in the supply chain. That means supporting domestic manufacturing of cells, wafers and ingots; developing local expertise in process engineering and equipment servicing; training technicians; and diversifying overseas suppliers where practical. The shift will take time: adding module assembly capacity is easier than building a competitive upstream ecosystem with high yields and reliable quality.
For project developers and consumers, the proposal is a watch item—not a reason to assume that solar installations are about to stop. The bigger lesson is that energy security increasingly depends on manufacturing knowledge and specialised equipment as well as on the finished hardware. India’s solar ambitions will be more resilient if it can secure access to those capabilities while building alternatives at home.
