Idemitsu Kosan Co.,Ltd. and Source Energy Company announced a strategic collaboration to co-develop and deliver next-generation energy solutions for the high-LEO and MEO markets. This collaboration will combine Idemitsu's proven CIGS solar cell technology with Source Energy's family of advanced solar modules and deployable arrays for satellites and spacecraft. As the space industry experiences exponential growth, it faces a critical bottleneck: a limited supply of high-performance solar cells, an essential component for satellite operations.
This collaboration directly addresses that challenge by merging Idemitsu's decades of experience in solar cell R&D and mass production with Source Energy's proven approach to delivering disruptive, available, and cost-effective space power systems. The traditional space solar industry relies heavily on Gallium Arsenide (GaAs) solar cells, which have become a critical supply chain dependency and geopolitical risk. Global shortages of GaAs, mounting international threats, and accelerating satellite demand highlight the urgent need for a more secure and scalable alternative. Idemitsu's proprietary thin-film CIGS solar cells offer a compelling solution.
Backed by over 30 years of R&D and more than 6GW of terrestrial solar panel production, these cells deliver high radiation resistance, a lightweight profile and scalability--enabling longer satellite lifespans and improved reliability. Their ability to maintain high performance over time also reduces the need for oversized arrays, resulting in substantial mass and cost savings for customers. Source Energy brings a proven track record in manufacturing, integration, and delivery of reliable solar products that leverage adjacent terrestrial industries.
Through its collaboration with Idemitsu, Source is expanding beyond its established silicon-based lineup to meet the growing demand for dependable solar arrays primarily for high-LEO andMEO missions. This collaboration introduces advanced CIGS-based solar technology, which will undergo a rigorous development and testing campaign at Source's Longmont, Colorado facility in preparation for deployment.
Idemitsu Kosan Co Ltd is Japan-based company primarily engaged in fossil fuel-related businesses. The Company operates five business segments. The Fuel Oil segment is engaged in the production, sales, import & export, and trading of refined petroleum products. The Basic Chemicals Segment is engaged in the production and sale of olefins and aromatics products. The High Functional Materials segment is engaged in lubricants, functional chemicals, electronic materials, functional pavement materials, and agribio products. The Power & Renewable Energy segment is engaged in power generation (includes thermal, solar, wind), power sales, and solar cell operations. The Resources segment is engaged in exploration, development, production, and sales of energy resources such as crude oil, natural gas, and coal. The Company also conducts insurance and intra-group service businesses.
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