The Space Show Presents Paul Wardley on special thin film solar for space and more, Friday, 4-17-26

The Space Show Presents Paul Warley, CEO of Ascent Solar, Friday, 4-17-26 Quick Summary: The Space Show featured Paul Worley, CEO of Ascent Solar, discussing their flexible thin-film solar technology. Paul explained that their CIGS (Copper Indium Gallium Sulfide) panels are lightweight, rollable, and designed to fit specific areas, offering 12.5-14% efficiency and costing $35-70 per watt compared to silicon’s $3-10 per watt. The panels have been tested in space and can withstand radiation better than silicon, with applications including satellites, drones, high-altitude platforms, and underwater systems. Paul noted their panels can be deployed and rolled up multiple times, with TRL9 certification from a previous space mission. The company is publicly traded on NASDAQ as ASTI and focuses primarily on DoD and commercial space markets, with plans to expand in MEO, GEO, and lunar applications in the coming years. Detailed Summary: Our program focused on technical discussions about space missions and power requirements. Paul explained different power levels for various orbital ranges, noting 450-600 watts per kilogram for MEO and GEO missions, and 150-250 watts per kilogram for lower orbits. The group discussed the format of an upcoming 60-minute space show, with participants introducing themselves and their backgrounds. Technical issues with audio echo were identified but not fully resolved before the end of the meeting. Paul explained the cost and efficiency differences between various solar panel technologies for space applications. He clarified that gallium arsenide panels cost $250-350 per watt, silicon panels cost $3-10 per watt, and their SIGS (Copper indium gallium sulfide) technology costs $35-70 per watt. Paul also described how their technology uses a different coating (XBR) for underwater applications, allowing panels to be submerged at 500 meters and recharge on the surface. Paul further discussed the development and specifications of their flexible solar panel technology, highlighting its advantages over traditional silicon wafers, including being 3-10 times lighter and providing roughly 4 times the power. The discussion covered the technology’s performance in high-pressure environments, manufacturing considerations, and potential applications in space, including lunar manufacturing and satellite deployment. Paul mentioned having a SpaceX founder on his advisory board and noted their current customers include a communications satellite company, with plans for manufacturing in space, as well as potential applications in drones, HAPS, and underwater systems. Paul discussed their company’s solar panel technology, explaining that if a panel is damaged by space debris, electricity can still flow around the damaged area. He confirmed they are in talks with multiple space companies, though he declined to name specific clients. When asked about operating temperatures, Paul clarified that their panels can operate between -100C to +100C in space conditions, though he couldn’t specify the exact temperature without cooling systems. The discussion ended with Paul highlighting their product’s key advantage of faster delivery times compared to traditional gallium arsenide panels, though he didn’t complete the specific timeline comparison. Paul discussed the efficiency of their flexible solar panels, explaining they measure between 12.5% and 14% efficiency in secondary cells. Marshall inquired about the durability of rolling up the panels, to which Paul confirmed they can be rolled up hundreds or thousands of times without damage, citing their TRL9 rating achieved through underwater testing. Paul also mentioned their product is patented and not restricted by ITAR, though they primarily market to Europe and India rather than China or other restricted regions. Paul talked about his company’s solar product, highlighting its durability and competitive advantage over Chinese alternatives in the consumer market. He explained that while the