Summa Equity

A type of engine being developed by ZeroAvia that uses hydrogen to power an aircraft, aiming for zero greenhouse gas emissions.

These systems combine liquid hydrogen storage with high-efficiency fuel cells to power electric motors, designed for 40–80 seat regional aircraft.

A technology that combines hydrogen and oxygen in a clean, electrochemical process to generate power, releasing only water vapor as a byproduct.

United Kingdom

United States

A hydrogen fuel cell aviation demonstration project involving a 250–300 nautical mile test flight. The main test is planned for summer in Orkney, Scotland.

A test flight of ZeroAvia's Dornier 228 aircraft, powered partially by a hydrogen-electric powertrain, to advance zero-emission aviation.

Development of ZeroAvia's larger powertrain platform, capable of producing between 2,000 kW and 5,000 kW, for larger aircraft.

Test aircraft used by ZeroAvia for flight testing of hydrogen-powered aircraft technology. The second aircraft arrived at the Hollister facility in April.

A 19-seat aircraft being developed as part of ZeroAvia's HyFlyer II program, intended to demonstrate hydrogen-electric propulsion for regional flights.

A certification-ready hydrogen-electric powertrain designed for 10 to 20 seat aircraft with a 500-mile range.