The concept involves the staged development of a hydrogen infrastructure in Singen, with the aim of supplying green hydrogen to energy-intensive industries. A demand analysis has been used to draw up scenarios for the future hydrogen requirements of industrial plants, which are expected to increase to between 8,900 and 10,740 tonnes per year by 2040. Hydrogen production will take place locally using electrolysis plants with a capacity of between 55 and 70 MW.

Recommendations for infrastructure planning highlight the need for new hydrogen pipelines and trailer stations to ensure flexibility and facilitate the integration of external hydrogen. Furthermore, waste heat from the electrolysis plant could be used to support the city’s transition to a municipal heating system, covering up to nine per cent of its heating requirements. Two sites have been identified as particularly suitable for operating an electrolyser.

Green hydrogen requires electricity from renewable sources for production. A potential analysis shows the extent of the potential of renewable energy sources within the municipal area of Singen (Hohentwiel), such as ground-mounted, rooftop and façade PV, as well as wind, hydro and biomass power. The future electricity requirements of the city as a whole were also considered.