Support CleanTechnica's work through a Substack subscription or on Stripe. Bayreuth, a pleasant Bavarian city of about 75,000 people, has become an unlikely symbol of learning in the hydrogen story. Two years ago, its municipal utility, Stadtwerke Bayreuth, announced a plan to decarbonize its bus fleet with hydrogen fuel cell vehicles. It looked like the future. The proposal included a 5 MW...