Will China's Export Limits Hit the US Solar Supply Chain?

Tensions between the US and China are sharpening around control of solar supply chains, with potential export limits on advanced manufacturing equipment threatening to reshape global energy infrastructure.

China is considering restrictions on the sale of high-end solar manufacturing technology to the US, according to Reuters. While no formal policy has been confirmed, early discussions with equipment providers indicate a shift in how Beijing approaches its dominance in solar production.

The move comes as US companies attempt to rebuild domestic solar manufacturing capacity, creating a direct clash between supply chain control and energy independence. With China producing more than 80% of global solar panel components and hosting the leading equipment suppliers, any restriction would carry consequences for project timelines, costs and energy deployment.

Energy security meets industrial policy

At the centre of this tension is the question of energy security. Solar power is now one of the fastest-growing sources of electricity generation, supporting grid decarbonisation and meeting rising demand from electrification and digital infrastructure.

Tony Etnyre, CEO of Suniva, says: “Suniva has long championed US leadership in solar manufacturing. Solar energy is the fastest and most economical way to grow our nation’s energy supply.

“Our expansion means that domestically produced renewable energy will do more than ever to secure America’s energy future. We are proud to partner with the state of South Carolina on this vital initiative.”

Suniva is expanding its footprint with a planned 4.5GW solar cell manufacturing facility in South Carolina, expected to open in the second quarter of 2027. Combined with its existing operations in Georgia, this will bring total capacity to more than 5.5GW annually.

The US push to localise manufacturing reflects broader concerns that access to energy infrastructure – including the components required to build it – will define competitiveness in the coming decades.

China’s leverage in solar manufacturing

China’s position in the solar value chain extends beyond panel production to the specialised equipment used in manufacturing cells. This upstream control gives Beijing influence over how quickly other regions can scale their own capacity.

Matt Card, President and COO at Suniva, highlights the stakes. “At this moment in history, the question of where our energy comes from - and who controls the supply chain that delivers it - is among the most consequential questions America faces.

“Suniva’s answer is straightforward: we build it here. With this expansion, Suniva contributes over 5.5GW of American-made solar cell capacity annually to a grid that increasingly depends on it. That’s not just good business. That’s a national imperative.”

Reliance on a single dominant supplier introduces risk, particularly as geopolitical tensions influence trade policy.

At the same time, analysts point out that replicating China’s manufacturing ecosystem is not straightforward. Years of investment, scale and integration have created a supply chain that is difficult to match in the short term.

Yana Hryshko, Head of Solar Supply Chain Research at Wood Mackenzie Power and Renewables, explains: "The US and most of the global solar industry remain heavily dependent on Chinese equipment manufacturers across the value chain.

"While there are a handful of non-Chinese equipment suppliers, their technologies are typically several generations behind China’s leading-edge solutions, and many still rely on critical components sourced from China.

"There are some mitigation strategies, such as sourcing second-hand equipment from Southeast Asia or India, but these come with clear limitations in terms of efficiency and technological relevance.

"This challenge is particularly acute in cell manufacturing, where advanced equipment is even harder to secure outside of China, making rapid and meaningful supply chain de-risking difficult in the near term."

Implications for energy and infrastructure

The outcome of these developments will influence how quickly solar capacity can be deployed, particularly in markets aiming to expand renewable generation while supporting energy-intensive sectors.

Companies such as Tesla are also navigating this landscape, seeking to expand solar manufacturing while exploring new energy applications, including powering data centres and emerging space-based systems.

At the same time, technology firms such as Google are investing in solar and energy storage to support electricity demand from digital infrastructure.

China’s consideration of export limits signals a shift from purely commercial competition to strategic positioning, where control of manufacturing capability becomes a policy tool. For the US, efforts to build domestic capacity represent both an industrial strategy and an attempt to secure long-term energy supply.

The balance between these approaches will shape not only where solar equipment is produced, but how energy systems are built, financed and operated across global markets.