In other news, Tongwei advanced its planned acquisition of polysilicon maker Lihao Clean Energy to the final negotiation stage, while Trina Solar outlined plans for THBC mass production in H2 2026 and GW-scale perovskite tandem capacity by 2029.
Longi plans to invest CNY 203.53 million ($29.9 million) to build a 100 MW pilot production line for high-efficiency crystalline silicon-perovskite tandem solar cells. The project will occupy 4,000 m2 at an existing pilot facility within Longi’s Central R&D Institute. The company 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. The pilot line will support research and development and pilot production of high-efficiency crystalline silicon-perovskite tandem cells. The Chinese PV manufacturer has steadily advanced its crystalline silicon-perovskite tandem technology in recent years. In 2023, it reported a certified efficiency of 33.5%, followed by a 33.9% world record later that year and 34.6% in 2024. The company 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).
