In a significant stride towards sustainable energy practices, a 25km pipeline has been commissioned in Leuna, Germany, connecting a 30MW green hydrogen plant to the TotalEnergies refinery. This project, situated in the Bad Lauchstädt Energy Park near Leipzig, aims to supply up to 2,700 tonnes of green hydrogen annually to the Leuna refinery, commencing operations by the end of 2025. The hydrogen production process utilizes Sunfire alkaline electrolysers, powered by an on-site wind farm, exemplifying a shift towards renewable energy sources. The venture, backed by a €210m final investment decision in 2023, involves key players such as Uniper, Terrawatt, Ontras, and VNG. Led by Ontras, the project team successfully repurposed the pipeline from natural gas to hydrogen use, enabling test operations to commence before full deployment. This initiative not only facilitates TotalEnergies' reduction of grey hydrogen usage but also signifies a pivotal step in the broader energy transition landscape.