Siemens Mobility is leading a transformation in rail transport in Bavaria by introducing hydrogen-powered trains on the Südostbayernbahn network. The state-commissioned fleet of three 2-car Mireo Plus H trains is set to replace diesel locomotives, offering a significant reduction in CO₂ emissions and noise pollution. Production has begun on these advanced trains, which will commence operations in late 2026. Designed with passenger convenience in mind, the trains feature amenities like low-floor access, improved mobile phone reception, and space for bicycles. Additionally, the use of the latest European Train Control System ensures safety and efficiency. The trains will operate on a 32.3-kilometer non-electrified rail route, with hydrogen fuel produced at a new electrolysis plant in Mühldorf using green electricity. The Mireo Plus H, based on Siemens Mobility's regional train platform, boasts advanced technology, energy efficiency, and quiet operation. With a roof-mounted fuel cell and lithium-ion batteries, the trains offer emission-free operation, 1.7 MW of power, acceleration up to 1.1 m/s², speeds of up to 140 km/h, and a range of 1,200 kilometers per tank. The quick refueling process of approximately 15 minutes enhances efficiency. The article highlights the environmental benefits of hydrogen technology, such as reduced reliance on electrification infrastructure, lower noise levels, and only producing water vapor. Siemens Mobility's commitment to innovation with digital solutions showcases their dedication to sustainable and reliable transport systems for the future.