Trina, Tongwei unveil major, multi-billion-dollar solar silicon, wafer and cell alliance

November 18, 2020
Facebook
Twitter
LinkedIn
Reddit
Email
Image: Tongwei.

Trina Solar and Tongwei have unveiled a multi-billion-dollar collaboration which will see the two companies invest in and co-develop multi-gigawatt solar supply facilities.

Announcing a major joint venture agreement late yesterday, Trina and Tongwei said the two companies will establish projects to develop high-purity c-Si silicon rods and high-efficiency c-Si cells and wafers.

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

Trina signed the JV with two subsidiaries of Tongwei – YongXiang CO and Tongwei Solar – and the JV will collaborate on and jointly invest in facilities producing high-quality polysilicon, polysilicon rods, solar wafers and cells, with a total investment value of RMB15 billion (US$2.3 billion).

Those projects are detailed in the chart below.

Tongwei-Trina Alliance Capacity Total investment (RMB) Location Share structure Operational start
Polysilicon 40,000 tons 4 billion Baotou Tongwei 65%, Trina 35% By September 2022
Silicon rods 15GW 5 billion Leshan Tongwei 65%, Trina 35% Phase I by September 2021, 7.5GW;Phase IIBy March 2022,7.5GW
Wafers 15GW 1.5 billion Jintang County Tongwei 65%, Trina 35% Phase I by September 2021, 7.5GW;Phase II By March 2022,7.5GW
Cells 15GW 4.5 billion Jintang County Tongwei 65%, Trina 35% By October 2021,15GW

Tongwei will take a 65% share in the projects and has provided an initial registered capital of RMB3.9 billion, while Trina solar will take a 35% share with a total registered capital of around RMB2.1 billion.

Tongwei claimed that Trina Solar or its affiliates would enjoy prioritised supply of high purity c-Si, silicon rods and cells produced by all project companies.

According to Trina Solar, the joint investment agreement would help reduce the company's procurement costs and guarantee long-term stability of the supply chain. In the meantime, it would facilitate sharing upstream profits to enhance the company’s profitability. The agreement was aligned with the company's strategic plan for future development.

In addition to polysilicon, the Tongwei-Trina cooperation was also underscored by the large-scale expansion of wafer capacity. Wafers have been the common weakness between the two, as could be seen from the supply chain layouts featuring quite limited or zero wafer capacities. It was of great significance to bridge this gap.

Wafer capacities of both companies are now expected to surge thanks to this cooperation. The supply chain is to be interconnected to support silicon, wafer and cell integration to achieve optimised cost advantages, the companies said.

Wu Qun, secretary of the board of directors of Trina Solar, said that these major project investments were necessitated by Trina Solar's strategic development planning.

Trina Solar and Tongwei had marked advantages in all segments throughout the industry chain. By reaching consensus on the 210 series, this cooperation would strengthen the strategic partnership between the two.

The joint efforts had helped to foster a mature 210 series supply chain and led to deepened integration. The planned PV module capacity would top 50GW for Trina Solar, the majority of which would go to 210 modules, and Trina Solar would continue to consolidate its advantage in massive production of advanced modules made from big cells.

Trina Solar also confirmed it had signed a framework agreement with Tongwei which will see the former procure 72,000 metric tons (MT) of polysilicon from four Tongwei subsidiaries between 2021 and 2023.

Trina said it was eyeing guaranteed silicon supply in signing the contract, having witnessed pricing volatility and supply constraints in the polysilicon market earlier this year.

Prices under the contract will be negotiated on a monthly basis, with the final contract value set to be dependent on those monthly market prices.

The announcement coincided with two major supply deals also signed by Trina Solar, securing its supply of both wafers and solar glass.

Read Next

Premium
November 6, 2025
Third-quarter results show a clear split in the fortunes of China’s leading polysilicon and module producers, writes Carrie Xiao.
November 5, 2025
Voltec Solar has signed a supply deal to use solar cells produced by Toyo Solar in its solar modules produced in France.
November 3, 2025
Runergy has reported that its latest n-type TOPCon solar cell has achieved a conversion efficiency of 26.55%.
October 31, 2025
Solar Media Market Research looks into the the Section 232 ruling in the US, tackling the questions that need to be understood.
Sponsored
October 23, 2025
Tongwei's rooftop-focused TNC 2.0 G12R-48 module will be among the products on show at All Energy Australia next week.
October 21, 2025
Leading Chinese solar manufacturer Trinasolar has signed a module supply agreement with Malaysian renewable energy developer Mestron Energy.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
November 12, 2025
10am PST / 1pm EST
Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Lisbon, Portugal