London to have world-first hydrogen-powered doubledecker buses

London will have the world’s first hydrogen-powered doubledecker buses on its streets next year, as the capital steps up attempts to tackle its polluted air. Transport for London (TfL) has ordered 20 of the buses, which cost around £500,000 each and only emit water as exhaust. As well as cutting polluting exhaust emissions, the buses will run on green hydrogen produced via North Kent offshore wind farms, according to TfL. The overall cost for the new fleet, including the refuelling infrastructure, will be £12m, £5m of which will come from European funding. The transport authority expects the running costs to be comparable for a diesel bus.