Giffey pointed out that Berlin wants to become climate-neutral by 2045 at the latest. "Hydrogen and the cooperation with Brandenburg to generate renewable energy - especially from wind power - will play a central role in this," she said. "Our goal is to make eastern Germany, with Berlin at its center, the center of a sustainable German hydrogen economy. With short distances for more sustainable energy." Giffey added that Berlin is still at the very beginning when it comes to hydrogen. There are pilot projects, for example at the Berlin city cleaning service, where vehicles are powered by hydrogen. Experts believe that hydrogen could be used to power ships and aircraft, among other things.