Vertically integrated manufacturer Tongwei Solar’s Regional Technical Service Director Jerry Jiang presented the company’s technology roadmap and advantages in integrated supply chain on day 3 of the 4-day TaiyangNews High Efficiency Solar Technologies 2024 Conference.
At present, Tongwei has 850,000 tons of polysilicon production capacity, 20 GW of ingot of wafer each, 126 GW of solar cell and 85 GW of modules. This vertical integration ensures full traceability and quality control.
Tongwei currently has a presence in all the leading technologies. While PERC is on its way to being phased out, it has GW-level capacities in TOPCon and HJT. For back contacts or XBC and perovskite THC tandem along with TOPCon and HJT, it continues to conduct further research.
For TBC technology, the company has a pilot line that’s capable of producing both p-IBC and n-IBC with a respective cell efficiency of 25.51% and 26.66%.
Under its cell technology termed as Tongwei N-type passivated contact Cell or TNC 1.0, the manufacturer has achieved a cell efficiency of over 25.4%. For TNC 2.0, it aims to exceed 26.5% in cell efficiency by incorporating technologies like EPT, 0BB, poly-layer optimization, advanced paste formulation, etc. It uses this structure for G12 and G12R wafers for various scenarios.
For more presentation videos and conference summaries for all 4 days of the TaiyangNews High Efficiency Solar Technologies 2024 Conference, click here for days 1 and 2, and here for days 3 and 4.