On November 17, 2020, Trina Solar announced a joint venture agreement with Tongwei. The latest agreement will see Trina Solar collaborate with Tongwei, to upgrade their 210 industrial series modules that will help secure a stronger supply chain ecosystem going forward. The partnership will see the two enterprises work together on four key project areas.

The first includes a high-purity crystalline silicon project with an annual output of 40,000 tons, as well as an ingot project expected to produce an annual output of 15GW. There will be a wafer-cutting project with an annual output of 15GW, and a high-efficiency crystalline silicon cell project, also with an annual output of 15GW. Total investment in the venture is estimated to be worth USD 2.3 billion, with Trina Solar gaining a shareholding ratio of 35%, and the total registered capital contribution has been set at USD 32 million.

By the end of 2021, Trina Solar plans to have a photovoltaic module production capacity of no less than 50GW, most of which will be at 210 module production capacities. In the future, the company will continue to strengthen its scale advantages of advanced module production capacity based on large-size cells. Trina Solar's collaboration with Tongwei Group follows the signing of further procurement deals by the company in recent weeks.