Tandem PV has achieved a record-breaking conversion efficiency of 30.4% with their perovskite glass tandem configuration module, surpassing the 30% efficiency barrier and showing promising durability with a 1% degradation rate per year. The company, with former U.S. Energy Secretary Jennifer Granholm on board, aims to quickly scale production modules that could achieve 28% efficiency. Their design allows for integration with various cell technologies, ensuring continued improvement in the future and providing more affordable and reliable clean energy solutions for America.