Flow Initiative: Europe’s 1630km hydrogen pipeline 2029 roadmap

September 26, 2026

Flow (Project Consortium) Germany

Overview

The European ‘Flow – Making Hydrogen Happen’ initiative is progressing with the conversion of natural gas pipelines for green hydrogen transport starting in 2025, aiming to establish a climate-neutral North-South hydrogen corridor spanning 1630km by 2029. This project leverages existing infrastructure to connect international hydrogen markets and supply substantial volumes of hydrogen to industrial users. Planned extensions to surrounding countries like Bavaria, Austria, Switzerland, France, and the Czech Republic are set to build critical infrastructure for European decarbonization and energy security.

In Depth

Key Findings

The ‘Flow – Making Hydrogen Happen’ initiative, a cornerstone European hydrogen infrastructure project, is on track to establish a 1630km high-performance pipeline network for green hydrogen by 2029. Commencing with the repurposing of natural gas pipelines in 2025, this network aims to create a climate-neutral North-South hydrogen transport route across Europe, integrating international hydrogen markets and ensuring a large-scale supply of clean hydrogen to industrial sectors.

Technical / Clinical Details

The ‘Flow’ project primarily relies on the repurposing and conversion of existing natural gas pipelines for hydrogen transport. This strategy offers a significantly faster and more cost-effective approach to establishing hydrogen transport capacity compared to building new infrastructure from scratch. The 1630km pipeline network will not only span Germany but also include planned extensions into neighboring regions such as Bavaria, Austria, Switzerland, France, and the Czech Republic, creating a broad, interconnected European network. This infrastructure will link key hydrogen production sites with major demand centers, facilitating the efficient distribution of hydrogen from renewable-rich northern regions to industrial hubs in the south. Integration with other Important Projects of Common European Interest (IPCEI) in hydrogen is also planned, further strengthening the continent’s nascent hydrogen ecosystem.

Background & Context

The European Union’s ambitious goal of achieving carbon neutrality by 2050 necessitates the widespread adoption of green hydrogen. However, beyond production costs, the lack of robust transport and storage infrastructure remains a significant bottleneck. Pipeline projects like ‘Flow’ are critical to overcoming this challenge, providing the backbone infrastructure required for stable, high-volume, and cost-effective hydrogen delivery. By repurposing existing natural gas pipelines, the project minimizes environmental impact while accelerating deployment, thereby bolstering Europe’s energy security and resilience.

Strategic Significance & Outlook

Scheduled for completion by 2029, the ‘Flow’ project is set to profoundly impact the development of Europe’s hydrogen economy. The establishment of this pipeline network will stimulate intra-European hydrogen trade and foster the creation of new industrial clusters. Furthermore, it is expected to encourage long-term offtake agreements between hydrogen producers and consumers, thereby increasing investment certainty. Looking ahead, the network’s planned expansion will integrate more European countries and industrial sectors into the hydrogen ecosystem, accelerating the continent’s overall energy transition and solidifying its global leadership in climate action.

Source: https://www.flow-hydrogen.com/en/home-en/

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