In a significant move towards sustainable public transport, Cologne operator RVK has integrated its first Solaris hydrogen-powered articulated buses into service. This deployment is part of a continuous effort by RVK to expand its zero-emission fleet, with the recent order adding to the existing 46 Solaris 12m hydrogen buses. Solaris, a key player in the market, is fulfilling the order for an additional 20 hydrogen buses, further enhancing RVK's fleet to a total of 84, the largest in Europe. The buses are equipped with cutting-edge technology, including a 100kW fuel cell system and efficient air-conditioning, ensuring comfort for passengers and supporting the driver. RVK's commitment to a hydrogen strategy is evident through collaborations with renowned manufacturers like Solaris, Wrightbus, and Van Hool. This progressive approach highlights the city's dedication to environmental sustainability and innovation in public transport.