LONGi Green Energy Technology (LONGi)

Founded in 2000, LONGi Green Energy Technology Co., Ltd. (LONGi) is a solar technology that develops solutions for large-scale power plants and for different industries and households with its innovation-focused development. Eventually, it also plans to supply "Green Power + Green Hydrogen" solutions for global zero-carbon development.

Since 2015, LONGi has located its operations in Yunnan, China, and Kuching, Malaysia, to utilize the abundant local hydropower resources to provide clean energy for its facilities. LONGi plans to integrate solar power plants with pumped storage in areas that feature significant elevation differences and abundant sunlight, creating an industrial model for using solar. 

On its website, LONGi states that "the LONGi R&D team has achieved successive breakthroughs in key technologies. These include perovskite thin-film crystal growth on textured silicon substrates, high-efficiency bulk passivation and optical management, and these advancements have led to rapid improvements in the efficiency of silicon-based stacked cells".

In May 2023, the Company announced its new efficiency of 31.8% for perovskite/crystalline silicon tandem solar cells based on commercial CZ silicon wafers. It also claims to have this result certified by the German Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE).  

In June 2023, LONGi announced the new conversion efficiency of 33.5% for its silicon-perovskite tandem solar cells based on commercial CZ silicon wafers., reportedly certified by the European Solar Test Installation (ESTI).