 world leading hydrogen retrofit innovation hydroflex is the worlds first train retrofitted to operate under hydrogen power and the first hydrogen powered train on britains railway uniquely it is capable of drawing power from overhead wires and where these dont exist operating in self powered mode using hydrogen fuel cells and batteries hydroflex is the result of a ground breaking collaboration between porterbrook and the university of birmingham following successful mainline testing of the hydroflex in september 2020 porterbrook has partnered with the university of birmingham and network rail to build a new version of the hydroflex capable of replicating the duty cycles of the diesel trains it aims to replace the new hydroflex will offer delegates attending novembers cop26 in glasgow the opportunity to travel on a hydrogen ready train that will also showcase the best of uk engineering following the conference hydroflex will be used to demonstrate the potential of hydrogen traction to transport authorities across the uk nations and regions 