Double decker hydrogen bus project completes design phase

Featuring partners Bramble Energy, Equipmake, Aeristech, and Bath University, HEIDI (Hydrogen Electric Integrated Drivetrain Initiative) is developing a ‘first-of-its-kind’ hydrogen-powered double decker bus. One year on from the commencement of the £12.7m venture, HEIDI is now said to be moving from design concept into its manufacturing phase.   

Designs for the fuel cell system, hydrogen storage, and the bus itself are now complete. According to Bramble, its printed circuit board fuel cell (PCBFC) technology has allowed the bus to maintain a capacity of 86 passengers, comparable to existing London double deckers.

Early tests of the fuel cell stack are said to be promising, with simulations predicting a range of up to 280 miles on UK bus routes using 350 bar hydrogen. This too compares favourably with London buses, which typically travel 100-200 miles per day. HEIDI will also be capable of refuelling in around eight minutes.

HEIDI is now set to move into the next phase of the project. This will include the manufacturing of key components including the fuel cell stack, fuel cell system, and hydrogen storage.