Kesterite tech news
First Solar, Inc. (NASDAQ: FSLR) announced on May 25, 2026, the successful validation of its "CZTS--Boost" technology, integrating a Kesterite buffer layer into its Series 7 CdTe modules. This architectural shift addresses spectral limitations in the 400--500nm range, resulting in a certified module efficiency of 23.1%. The company anticipates that this transition to earth--abundant Kesterite components will reduce supply chain exposure to tellurium price volatility. Commercial deployment is slated for Q1 2027, following the completion of the Perrysburg, Ohio facility expansion.