Longi Plans 100 MW Perovskite-Silicon Tandem Solar Cell Pilot Line

Chinese PV manufacturer Longi is investing in a 100 MW pilot production line for high-efficiency crystalline silicon-perovskite tandem solar cells.

Perovskite-silicon tandem solar cells have been gaining attention in the renewable energy sector due to their high efficiency rates. Chinese PV manufacturer Longi is taking a step forward in this technology by planning a 100 MW pilot production line for high-efficiency crystalline silicon-perovskite tandem solar cells. The pilot line, which will occupy 4,000 m2 at an existing pilot facility within Longi's Central R&D Institute, is expected to support research and development and pilot production of high-efficiency crystalline silicon-perovskite tandem cells.

Longi will lease space and use supporting equipment from the existing facility, while installing new equipment for perovskite thin-film deposition, rapid perovskite crystallization, and functional-layer thin-film deposition. Longi has been steadily advancing its crystalline silicon-perovskite tandem technology in recent years. The company reported a certified efficiency of 33.5% in 2023, followed by a 33.9% world record later that year and 34.6% in 2024.

Longi raised the record to 34.85% in April 2025 and, most recently, to 35.5% in July 2026, setting a new world record for the technology. The result was independently certified by the European Solar Test Installation (ESTI). The development of perovskite-silicon tandem solar cells is expected to play a significant role in the growth of the renewable energy sector.

These cells have the potential to achieve higher efficiency rates than traditional solar cells, making them a promising technology for the future.

Trina Solar's Strategy for Module Business Trina

Solar has also made headlines in the PV industry with its adoption of a dual-driver TOPCon 3.0 + THBC strategy for its module business. The company's THBC products will target high-value rooftop markets and are expected to enter mass production in the second half of 2026. Trina also expects perovskite tandem cells to enter small-scale production in 2028-29, with GW-scale capacity targeted for 2029.

Global Cell Shipment Ranking

PV industry research firm InfoLink has released its global cell shipment ranking for the first half of 2026. The top five cell manufacturers shipped a combined 91.9 GW, up 5% year on year. Tongwei ranked first, followed by Yingfa Ruineng, SolarSpace, Jietai Technology, and Sunsync.

Tongwei's Acquisition of Lihao Clean Energy

Tongwei has issued an update on its planned acquisition of Lihao Clean Energy. The company plans to acquire a 100% stake in polysilicon manufacturer Lihao Clean Energy from 57 shareholders, including Duan Yong, Hainan Zhuoyue, and Hainan Haoyue, through a combination of share issuance and cash payment. Tongwei also plans to raise supporting funds through a share placement to no more than 35 qualified investors.

The acquisition has entered the final stage of negotiations over the transaction plan. The development of perovskite-silicon tandem solar cells is an exciting area of research and development in the renewable energy sector. Longi's investment in a 100 MW pilot production line is a significant step forward in this technology, and it will be interesting to see how it progresses in the coming years.

Source: pv magazine