Solar energy is recognized as the fastest and most economical way to increase kilowatts in the grid, with the US Air Force supporting the space solar industry. Germanium-based solar modules have set a new world record for solar conversion efficiency, but there is a shortage of germanium in the US. The Department of War has awarded $18.1 million to a domestic producer to address the germanium shortfall for defense applications. The US Air Force sees solar energy as a next-level logistics improvement over fossil fuels, with plans to deploy space-based systems to harvest solar energy in orbit and beam it down to Earth. Private sector stakeholders are working towards demonstrating space-based solar technology within the next 10 years. Research is being conducted by the USAF on space solar energy delivery to Earth, with a focus on fuel resupply in the Indo-Pacific region. The project, titled PERSEUS, aims to provide clean energy anywhere on Earth in the early 2030s. The technology could be used for defense applications once deployed, offering a way to reduce reliance on vulnerable fuel supply chains. Solar energy demand is also increasing on Earth, with the US solar industry dominating new utility-scale capacity additions to the nation's grid. Additionally, the US defense supplier York Space Systems has acquired the space solar startup Solestial to secure a domestic source for critical space solar capability. Solestial is preparing to produce new solar cells in the United States after acquiring manufacturing equipment from Meyer Burger. The company aims to expand its manufacturing capabilities and supply chain control with this strategic move. Solestial's focus is on in-space applications for its self-healing silicon solar technology. The US Air Force recognizes the importance of solar energy for national defense, potentially replacing fuel resupply missions for ground operations.
https://cleantechnica.com/2026/06/15/space-solar-energy-us-air-force-essential/