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

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

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.

17 June 2025
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 17-18 June 2025, will be our fourth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2026 and beyond.
2 December 2025
Málaga, Spain
Understanding PV module supply to the European market in 2026. PV ModuleTech Europe 2025 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of module supplier selection; product availability, technology offerings, traceability of supply-chain, factory auditing, module testing and reliability, and company bankability.
10 March 2026
Frankfurt, Germany
The conference will gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing out to 2030 and beyond.

Read Next

April 28, 2025
Swiss renewable power developer Axpo and EDF Renewables Hellas have signed a power purchase agreement (PPAs) for 102MW of solar capacity.
April 25, 2025
Austria has announced a 'Made in Europe' bonus of 20% to government funding for PV and storage projects that use components made in Europe.
April 24, 2025
Leading Chinese firm DAS Solar has started construction at a 3GW module manufacturing facility in Mandeure, France, its first in Europe.
April 24, 2025
Swiss solar manufacturer Meyer Burger has reduced shifts for around 300 employees at its Thalheim cell manufacturing facility amid supply chain challenges.
April 23, 2025
Solar Media will host a panel discussion on European manufacturing at this year’s Intersolar Europe event, at the company’s stand on 7 May.
April 22, 2025
Japanese cell and module manufacturer Toyo Solar has begun production at its solar cell processing plant in Ethiopia.

Subscribe to Newsletter

Upcoming Events

Media Partners, Solar Media Events
May 7, 2025
Munich, Germany
Solar Media Events
May 21, 2025
London, UK
Solar Media Events
June 17, 2025
Napa, USA
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
July 1, 2025
London, UK