The solar industry is presently experiencing turbulence due to variations in silicon wafer sizes, module types, and technological approaches, and in this context, n-type modules are rising in popularity. Recognizing this technology’s improved performance value, Tongwei Solar has unveiled two new products: the TNC-182 module with optimized size and rectangular silicon wafer cell technology and the silver-free 210-THC module. Both new arrivals will enjoy higher power along with lower balance-of-system (BOS) and levelized cost of energy (LCOE).
Tongwei’s existing pilot-scale production line for its independently developed plasma-enhanced chemical vapor deposition (PECVD) TNC (Tongwei N-passivated Contact Cell) technology has achieved an efficiency of 25.7%. In terms of mass production, the conversion efficiency of the TNC cells has exceeded 25.5%. The TNC cells feature high bifaciality, ultra-low attenuation, improved temperature coefficient, and an enviable weak light response. Tongwei Solar's current 182 mm, 72 half-cell module has a power of 588 W, which is 25-30 W higher than PERC, and 10% higher in bifaciality. The company’s new TNC-182 innovates on the 182-72 version and designs for optimal cell and module sizes. The power of the new module versions is further increased by 25-30 W and can now exceed 600 W.
Tongwei Solar has been working on THC technology since 2018, and by March 2023, the mass production efficiency of Tongwei's first GW-level production line in China had reached a level of 26.18% (certified by ISFH). The newly unveiled 210-THC modules feature multiple technological breakthroughs, including the adoption of silver-free technology, ultra-thin silicon wafer technology, bifacial microcrystal technology, high-performance target doping, and light injection. The substitution of silver with copper electroplating further narrows the cost gap with PERC modules. Tongwei Solar’s new 210-THC module series enjoys a lower temperature coefficient and higher bifaciality, which can further increase power generation and achieve lower LCOE. Tongwei is expected to realize large-scale production of its THC modules soon.
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In line with the global goal of “carbon neutrality,” Tongwei Solar is further expanding its production capacity and shipment targets, striving to achieve 300,000 tons of high-purity crystalline silicon shipments, 70 GW of cell shipments (including self-use), and 35 GW of module shipments.
Tongwei Solar’s module manufacturing capacity is expected to reach 80 GW by the end of 2023.
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