Coolergy, a Spanish company, has embarked on a transformative project to convert TGM4 series diesel locomotives to hydrogen propulsion in Riga, Latvia. Teaming up with Aurora Engineering, the initiative aims to enhance environmental sustainability in railway transport by reducing harmful emissions. The collaboration includes the modernization of 12 locomotives operating in Riga, with the installation of four Toyota-produced fuel cells on each, significantly boosting their eco-friendliness. Supported by a 500,000 euro grant from Latvia's ETKC, the project is set to see the first hydrogen-powered locomotive operational in the Port of Riga by the end of 2024. Beyond locomotive upgrades, Coolergy plans to establish hydrogen production and liquefaction facilities in Estonia, capable of generating 2 tons of hydrogen daily, ensuring a stable fuel supply for the enhanced locomotives. This development not only underscores the company's commitment to sustainable practices but also signals a pivotal shift towards eco-friendly energy sources in the rail industry, setting the stage for broader adoption of hydrogen technologies in railway transport. With a positive outlook on the potential of hydrogen, Coolergy's endeavor highlights the importance of embracing innovative solutions for a greener future.