Located in Alsace, the RHYn (Rhine HYdrogen Network) project aims to promote the Upper Rhine hydrogen ecosystem by connecting the Dessenheim area with the industrial area of Chalampé-Ottmarsheim by 2028 – together with the urban area of Mulhouse to meet its mobility needs.
In later phases, the network can be extended to the south towards Basel to supply the airport area and to the north towards Marckolsheim to supply the industrial sites.

NaTran plans to reuse as much of the existing natural gas infrastructure as possible: Of the total 100 km of hydrogen network, at least 25 km will be repurposed. The pipeline will have a transport capacity of 190,000 tons of hydrogen per year (equivalent to 1,400 MW of production through electrolysis) and could reduce carbon emissions by up to 1 million tons of CO2 per year.

The RHYn project contributes to advancing the energy transition in the Grand Est region and strengthening its economic and industrial attractiveness. It offers new opportunities for the decarbonization of local industry and paves the way for the efficient use of all types of green mobility, as envisaged in the hydrogen strategy for Grand Est.

RHYn is part of the vision of the European Hydrogen Backbone, which aims to ensure the security of supply of hydrogen consumers and the creation of a common European market. In this context, the pipelines of the RHYn project will be connected to the cross-border pipelines of the RHYn Interco project to Germany.

NaTran plans to build a network of around 1,000 km of hydrogen pipelines in France by 2030, partly through new pipelines and partly by converting part of the existing gas network. The most advanced project, mosaHYc, aims to develop the first European hydrogen network by converting gas pipelines between the Moselle, Saarland and Luxembourg.