{"id":161214,"date":"2025-10-14T13:45:57","date_gmt":"2025-10-14T13:45:57","guid":{"rendered":"https:\/\/www.pv-tech.org\/?p=161214"},"modified":"2025-10-14T13:47:00","modified_gmt":"2025-10-14T13:47:00","slug":"oci-holdings-solar-wafer-vietnam-big-beautiful-bill-supply-chain","status":"publish","type":"post","link":"https:\/\/www.pv-tech.org\/oci-holdings-solar-wafer-vietnam-big-beautiful-bill-supply-chain\/","title":{"rendered":"OCI Holdings Vietnam wafer play exposes critical US solar supply bottleneck"},"content":{"rendered":"\n
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Korean chemical giant OCI bought a 65% majority stake in a 2.7GW silicon wafer facility in Vietnam this week. Image: Unsplash.<\/figcaption><\/figure>\n\n\n\n

OCI Holdings\u2019 decision this week to buy a Vietnamese solar wafer facility to supply the US solar cell manufacturing industry makes clear the biggest vulnerability facing the sector today.<\/p>\n\n\n\n

Korean chemical giant OCI bought a 65% majority stake in a 2.7GW silicon wafer facility in Vietnam<\/a> this week, currently being built by Elite Solar Power. The company said it would be supplying wafers that meet US Foreign Entity of Concern (FEOC) requirements to the market by \u201cearly 2026\u201d.<\/p>\n\n\n\n

The move, which an industry expert told PV Tech Premium<\/em> would likely be the first of numerous wafer facility acquisitions in Southeast Asia, speaks to the strategic importance of reliable wafer supply for the US solar manufacturing industry.<\/p>\n\n\n\n

The US needs solar wafers<\/h2>\n\n\n\n

Next year is set to see an expansion in US domestic solar cell capacity. Manufacturers T1 Energy, Talon PV, Hanwha Qcells<\/a> and Mission Solar (a subsidiary of OCI) are all slated to start new cell production in 2026, which will significantly increase the roughly 2GW of operational cell capacity currently in the US.<\/p>\n\n\n\n

But there is newfound pressure on the inputs for those cell facilities. From 1 January 2026, FEOC restrictions prohibit the use of any components from China or companies with significant Chinese financial backing. Chinese companies overwhelmingly dominate global production of solar wafers, ingots and polysilicon.<\/p>\n\n\n\n

Wafers will be the essential chokepoint for US solar supply as cell capacity comes online. US solar producers have long needed bespoke supply chains to avoid trade barriers with China, but the FEOC regulations passed in the \u201cOne Big, Beautiful Bill Act\u201d in the summer go further and are more restrictive than previous rules.<\/p>\n\n\n\n

Reporting from the RE+ trade show last month<\/a>, PV Tech <\/em>heard that, thanks to FEOC and other restrictions like the Uyghur Forced Labor Prevention Act (UFLPA), supply chain transparency and security are paramount for manufacturers and buyers alike.<\/p>\n\n\n\n

It makes sense for non-FEOC companies to buy wafer capacity to supply reliable products to the US, given that meaningful domestic wafer capacity isn\u2019t around the corner. US cell producers have an increasingly premium offering in the domestic market, given the pressures on imports from the antidumping and countervailing duty (AD\/CVD), UFLPA and FEOC and the vast disparity between domestic module production capacity and domestic cell output, as shown in the graph below.<\/p>\n\n\n\n

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