China has proposed new export controls on 12 technologies used in solar equipment manufacturing, citing national security concerns as Beijing reviews restrictions covering several advanced technology sectors, including artificial intelligence and biotechnology.
The proposal could have significant implications for the global solar industry, particularly companies seeking to expand manufacturing outside China. The country plays a dominant role in the solar supply chain, and tighter controls on advanced production methods could make it more difficult for foreign manufacturers to develop competitive domestic industries.
China Targets Advanced Solar Manufacturing Technologies
China’s Ministry of Commerce announced on Friday that it had proposed adding photovoltaic manufacturing technologies to the country’s export control list. Officials said stronger oversight was necessary because solar technologies are increasingly being used in sensitive sectors, including aerospace and national defense.
According to Reuters, Chinese officials had already held preliminary discussions with manufacturers about possible restrictions on advanced technologies used to produce solar panels.
The proposed measures are part of a broader effort to regulate the international transfer of technologies that Beijing considers strategically important. While the government says the controls are intended to address security risks, they could also influence competition in the rapidly expanding global renewable energy market.
Which Solar Technologies Could Face Restrictions?
The proposal covers several advanced manufacturing processes used to produce solar cells and other essential components of photovoltaic systems.
Some technologies could face outright export bans, while others would be subject to tighter restrictions.
Among the technologies targeted are processes used to manufacture thin wafers, perovskite and tandem solar cells, as well as large-scale fluidized-bed reactor technology for producing polysilicon.
China also plans to restrict, rather than completely prohibit, exports of advanced solar cell manufacturing technologies, including TOPCon, HJT and XBC.
These technologies are important to the industry’s efforts to improve solar panel efficiency, reduce production costs and increase the amount of electricity generated from available sunlight.
Why China’s Export Controls Matter to the Global Solar Industry
China has established a leading position across much of the solar manufacturing supply chain, from polysilicon production to wafers, solar cells and finished panels.
This concentration means that restrictions on transferring manufacturing technology could create challenges for countries and companies attempting to establish or expand their own production capacity.
The proposed controls could be particularly significant for the United States and India, both of which have sought to strengthen domestic solar manufacturing and reduce dependence on Chinese suppliers.
Reuters reported in April that Beijing had begun consulting manufacturers about possible restrictions on advanced solar production technologies. Such measures could affect companies planning to expand manufacturing operations in the United States, including Tesla, which has interests in the broader clean energy sector.
The potential impact would depend on which technologies are ultimately covered, how the rules are implemented and whether companies can access alternative production methods.
India’s Efforts to Reduce Dependence on China
India is another important market affected by developments in China’s solar technology policy.
The country has been investing in domestic manufacturing as part of its strategy to expand renewable energy capacity and reduce reliance on imported solar equipment.
Reuters has previously reported that Beijing has restricted exports of solar manufacturing technology to India. Analysts have suggested that China’s measures could help preserve its competitive advantage as Indian manufacturers attempt to develop their own production capabilities.
For India, access to advanced manufacturing technology is particularly important because producing solar panels domestically requires more than assembling finished components. Companies also need specialized equipment, technical expertise and efficient production processes.
If access to Chinese technology becomes more limited, manufacturers may need to invest in alternative suppliers or develop new capabilities, potentially increasing costs and extending the time required to expand production.
Perovskite and Tandem Solar Cells Among the Technologies Affected
The proposed restrictions include technologies associated with several next-generation solar cell designs that could improve the performance of photovoltaic systems.
Perovskite Solar Cells
Perovskite solar technology is attracting attention because of its potential to achieve high energy-conversion efficiency while offering opportunities for new manufacturing approaches.
Researchers and manufacturers are exploring ways to commercialize these cells as alternatives or complements to conventional silicon-based solar technology.
However, scaling up production remains a technical and commercial challenge. Access to advanced manufacturing processes could therefore be important for companies seeking to bring perovskite-based products to market.
Tandem Solar Cells
Tandem solar cells combine different materials in multiple layers to capture a wider portion of the solar spectrum.
One promising design combines perovskite with silicon, allowing the cell to absorb more of the available sunlight than a conventional single-junction silicon cell can capture on its own.
The technology has attracted interest because it could increase the efficiency of future solar panels. Restrictions on related manufacturing processes could affect how quickly companies in other countries develop and commercialize these products.
Polysilicon Production Technology
China’s proposal also covers large-scale fluidized-bed reactor technology used to manufacture polysilicon, a key raw material in the solar industry.
This process can offer advantages in energy consumption and production costs compared with the conventional Siemens process, which has been widely used to produce high-purity polysilicon.
Because polysilicon is an essential input for crystalline silicon solar cells, the availability of efficient production technology can influence the economics of building new manufacturing facilities.
Limiting access to these processes could make it more difficult for companies outside China to establish competitive production operations.
Export Rules Could Affect the Next Phase of Solar Competition
China’s proposed controls come as governments worldwide seek to expand renewable energy production while strengthening domestic supply chains for strategically important technologies.
Solar power has become a major component of energy transition strategies, but the industry remains vulnerable to supply-chain concentration and geopolitical tensions.
For countries trying to build domestic manufacturing capacity, access to advanced equipment and production knowledge can be as important as access to raw materials.
China’s Ministry of Commerce said the proposed controls were intended to prevent technologies from being transferred beyond appropriate limits or distributed in ways that could create risks. The ministry also emphasized the importance of maintaining normal international scientific and technological exchanges.
Under the proposed arrangements, exporters must register certain technology transfers abroad while the export control catalogue awaits its official update.
The public consultation period is scheduled to close on November 15. The final scope and implementation of the measures will determine how significantly they affect international solar manufacturers.
For now, the proposal signals that advanced solar manufacturing technology is becoming an increasingly important part of China’s strategic trade policy. If the restrictions are adopted, companies in the United States, India and other markets may face additional challenges as they work to build more independent and competitive solar supply chains.
