Bramble Energy, in collaboration with Equipmake, Aeristech, and the University of Bath, has reached a significant milestone in the development of a hydrogen double-decker bus through the Hydrogen Electric Integrated Drivetrain Initiative (HEIDI) project. The initiative, supported by the Advanced Propulsion Centre UK, focuses on reducing carbon emissions by nearly 6 million tonnes. The project has successfully completed concept designs for the fuel-cell system, hydrogen storage, and the bus itself. Bramble Energy's innovative PCBFC technology enables the bus to maintain a passenger capacity of 86 people and achieve a range of up to 280 miles on UK bus routes using 350 bar hydrogen. This range surpasses that of typical London buses and offers quick refueling times of around eight minutes. Vidal Bharath, CCO at Bramble Energy, highlights the project's significance in revolutionizing public transport towards net-zero emissions. By integrating their fuel-cell stacks, the project aims to create sustainable transport while also supporting job creation and preventing millions of tonnes of CO2 emissions in the next decade.