US Air Force Sets Its Sights On Space Solar Power

The US Air Force is advancing efforts to harness space-based solar power as a means to enhance energy security and operational resilience. This initiative involves a partnership with the startup Overview Energy, which is developing a novel system to collect solar energy in geosynchronous orbit and beam it down to Earth. Unlike traditional space solar concepts that require dedicated ground receivers, Overview’s approach integrates with existing terrestrial solar power plants, effectively extending their operational hours by providing continuous energy regardless of weather or daylight conditions. Overview Energy, founded in 2022, has attracted significant private investment, including $20 million from venture firms such as Engine Ventures and Lowercarbon Capital. The company highlights recent technological and economic breakthroughs that have made space solar more viable, including drastically reduced launch costs, routine satellite mass manufacturing, and the availability of efficient photovoltaic and laser technologies. Their system operates by transmitting low-intensity, invisible infrared light—similar to that used in night vision cameras—ensuring the energy beam is safe for people, wildlife, and aircraft. The US Air Force’s interest in space solar power builds on its longstanding commitment to solar technology, which began with large-scale installations during the Obama administration and has since expanded to portable and small-scale systems. The recent contract awarded to Overview focuses on demonstrating the technology’s potential to support military operations in remote and contested environments, such as bases in Alaska and Guam. By reducing dependence on fuel supply chains, space solar power could enhance the flexibility and safety of US forces, addressing a persistent logistical challenge in modern warfare. Looking ahead, Overview Energy plans to launch satellites into low Earth orbit by 2028, with megawatt-scale energy transmission targeted for 2030. The company has already secured capacity reservations with major partners, including Meta, and successfully tested its technology on airborne platforms. These developments suggest that space solar power is transitioning from a theoretical concept to a practical energy solution, with significant implications for both civilian and military energy systems in the coming decade.