A consortium associated with the Karlsruhe Institute of Technology (KIT) has established a plant at the Mannheim wastewater treatment facility to convert biogas CO2 into climate-neutral marine fuel using green hydrogen. This innovation aims to address the shipping sector's significant contribution to global greenhouse gas emissions. The patented process involves purifying biogas to produce climate-neutral methanol, which can be utilized as marine fuel or in the chemical industry. Despite methanol releasing CO2 when burned, the sourced carbon from the treatment plant renders it climate neutral. Germany's focus on climate-friendly fuels is highlighted by the federal minister for digital affairs and transport, stressing the importance of research and development in decarbonizing maritime shipping. The initiative underscores the untapped potential of over 80,000 wastewater treatment plants in Europe for sustainable methanol production. The project's positive impact is further emphasized by a climate tech start-up affiliated with KIT, which envisions several million tonnes of sustainable methanol production annually from wastewater treatment plants in Germany. The article also mentions the necessity of renewables-based synthetic fuels like methanol to decarbonize sectors such as shipping where electricity alternatives are limited or costly. However, the energy-intensive and expensive nature of producing such fuels warrants their selective use where direct electrification is impractical.