VSUN Solar, OCI ink polysilicon supply agreement

Facebook
Twitter
LinkedIn
Reddit
Email
VSUN and OCI have signed a polysilicon supply agreement
The polysilicon agreement will support VSUN’s goal to integrate its supply chain vertically. Image: VSUN

TOYO SOLAR, a solar cell subsidiary of Tokyo-headquartered solar manufacturer VSUN SOLAR, has signed a long-term polysilicon supply agreement with South Korean-owned polysilicon producer OCI.

The new partnership will support VSUN’s goal to vertically integrate its global solar supply chain, although companies have not disclosed the amount of polysilicon to be supplied.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

VSUN has a current annual nameplate capacity of 4GW of solar modules as well as of tunnel oxide passivated contact (TOPCon) solar cells in Vietnam, with Phase II of the solar cell capacity expansion underway.

Moreover, the company is also working on a 4GW wafer plant in Southeast Asia, which is expected to be operational during the second quarter of 2024.

Lewis Cai, CEO of VSUN SOLAR, said: “The partnership with OCI safeguards the stable supply of critical raw materials along VSUN’s production chain. This crucial alliance is a testament to VSUN’s commitment to maintaining a resilient and robust supply chain.”

Earlier this month, the solar manufacturer company appointed Aihua Wang as chief technology officer of VSUN. In a recent interview with PV Tech, Wang spoke about the technological transition between p-type and n-type and how the company is looking towards improving its TOPCon technology, while developing other technologies.

20 April 2027
Istanbul, Türkiye
PV Tech has been running PV CellTech Conferences since 2016. PV CellTech Global, on 20-21 April 2027, is the meeting place for everyone invested in the growth of PV manufacturing and advancement in cell technologies, which will drive us towards the installed capacity required to power the planet by 2050. This is a gathering of key stakeholders driving capital expenditure and technologies for new PV manufacturing plants across the globe to harness the opportunities the growth of PV represents out to 2050 and beyond. The conference takes place in one conference room, where all senior peers have the same shared experience of learning and unique insight, unmatched anywhere else in the solar industry events calendar.

Read Next

May 14, 2026
Canadian Solar has posted a quarter-on-quarter decline in both solar module shipments and net revenues in the first quarter of 2026.
May 11, 2026
Turkish solar manufacturer Kalyon PV has commissioned a 1.1GW solar cell processing line in its home country.
May 8, 2026
Solar manufacturer SEG Solar has unveiled a new module assembly plant in the US with a 4GW annual nameplate capacity.
April 29, 2026
The ESMC has outlined five key amendments to the proposed Industrial Accelerator Act (IAA) to accelerate domestic cleantech deployment.
April 20, 2026
The US Patent and Trademark Office (USPTO) issued a Final Written Decision on patent litigations launched by Chinese solar manufacturer Trina Solar.
April 20, 2026
Chinese PV manufacturer JinkoSolar has launched a new lightweight solar module designed for low-load-bearing rooftops.

Upcoming Events

Solar Media Events
May 20, 2026
Porto, Portugal
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 2, 2026
Johannesburg, South Africa
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)