Idemitsu Kosan partners with Source Energy Company to develop space‑grade CIGS solar modules

Type: Partnership · Technology: Solar · Country: United States · Announced: 2026-09-10

Idemitsu Kosan Co., Ltd. announced a partnership with U.S.-based Source Energy Company to develop copper indium gallium‑selenide (CIGS) solar modules for satellite and space applications. The collaboration will leverage Idemitsu's space‑grade CIGS technology and Source Energy's U.S. market presence to create lightweight, radiation‑resistant solar modules. The joint effort includes prototyping at Idemitsu's new laboratory at UC Santa Barbara’s Oasis facility and aims to accelerate commercialization by 2027. This partnership strengthens Idemitsu's entry into the global space‑industry supply chain while providing Source Energy with advanced thin‑film solar technology for its customers. Both parties will share technical analyses, reliability validation, and market feedback to support mass‑production development in Japan.

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