With the goal of achieving “carbon neutrality by 2050″, the Ministry of Economy, Trade, and Industry (METI) created the Green Innovation Fund Project (total 2 trillion yen) to support research and development over a 10-year period as part of the New Energy and Industrial Technology Development Organization (NEDO). A research team including Prof. Atsushi Wakamiya, Prof. Yoshihiko Kanemitsu, and Prof. Takeshi Hasegawa at our institute (ICR) was selected in partnership with Enecoat Technologies, Co., Ltd. to lead one of the priority areas of the Green Innovation Fund Project, “The Devel- opment of Next Generation Solar Cells”. This project aims to commercialize lightweight, flexible, and high-performance perovskite solar cells for installation in locations where traditional solar cells cannot be used, such as factory roofs and building walls with low load-bearing capacity.