ZeroAvia has unveiled its SuperStack Flex fuel cell architecture, achieving over 1.0kW/kg specific net power at a full system level. By utilizing additive manufacturing techniques such as selective laser sintering, the company has significantly reduced the weight and volume of key components, making the system lighter, more compact, and cost-effective. The modular design of the SuperStack Flex allows for scalability between 100kW and 600kW, catering to a wide range of applications in aerospace, marine, and ground vehicles. This breakthrough in fuel cell technology enhances UAV and VTOL capabilities, enabling new applications in aerospace and other sectors. The design flexibility of the system also enables easy integration into different airframes, overcoming space constraints. ZeroAvia's focus on certification with regulatory bodies like the CAA and FAA provides confidence to customers seeking approval for their platforms. The company's Founder & CEO, Val Miftakhov, praised the engineering team for their innovative work, emphasizing the quick customization and cost-effective nature of the SuperStack Flex. This development follows other milestones in 2025, including the certification of a 600kW electric propulsion system by the FAA and the first customer purchase of the standalone system. The SuperStack Flex represents a significant step forward in aerospace fuel cell systems, offering efficiency, versatility, and improved flight duration for various aircraft.