Energy infrastructure • Hydrogen
European Hydrogen Pipeline Network
Europe has 50,165 km of hydrogen pipeline projects in planning, a 40% increase from March 2024. Of this, exactly 30 km is under construction: a single segment of the Netherlands National Hydrogen Backbone at the Port of Rotterdam. The rest is proposed.
Sources: GEM Europe Gas Tracker 2025: Hydrogen edition (January 2025, CC BY 4.0). Cross-referenced with H2 Infrastructure Map Europe (ENTSOG/GIE/Eurogas joint initiative: 180+ transmission, 80+ storage, 30+ terminal projects).
1,636 km operating vs 30 km under construction
These are two different things. The 1,636 km of operating hydrogen pipelines were built over decades by industrial gas companies (Air Liquide, Linde, Air Products) to connect chemical plants and refineries in clusters like Rhine-Ruhr, Benelux, and northern France. They carry grey hydrogen from natural gas reforming as a chemical feedstock. They are short-haul, low-pressure, and serve captive industrial demand.
The 30 km under construction at Rotterdam is the first segment of something entirely different: a public transmission backbone designed to move green hydrogen as an energy carrier across borders, at high pressure, over long distances. That is the 50,165 km the EU hydrogen strategy depends on. The existing industrial network proves hydrogen pipelines work technically, but says little about the feasibility of the planned backbone, which faces different engineering challenges (embrittlement in repurposed gas pipelines, pressure ratings, blend specifications) and different economics (open market pricing vs. captive industrial offtake).
EU hydrogen policy: ambition vs reality
The gap
The European Court of Auditors found that EU hydrogen targets were "driven by political will rather than being based on robust analyses." Green hydrogen currently accounts for 0.3% of global hydrogen production. The IEA's Net-Zero pathway requires 70 million tonnes per year by 2030. Projects that have reached final investment decision (FID) total 3 mtpa. Bloomberg NEF's realistic estimate for 2030 is 16 mtpa, and in December 2024 BNEF tripled its prior 2050 cost estimate for green hydrogen.
Efficiency problems
7x
Heating homes with green hydrogen consumes seven times more energy than direct electrification.
1.6%
A 5% hydrogen blend in the gas grid displaces only 1.6% of gas demand due to hydrogen's lower energy density.
30-40%
Ammonia cracking round-trip efficiency. Most hydrogen import projects rely on ammonia as a carrier.
Technical barriers
Modern gas turbines handle only about 20% hydrogen without overhaul; a 20% blend yields just 7% gas consumption reduction. Hydrogen causes material embrittlement in pipelines not designed for it, and leaks more readily than methane through existing infrastructure. Of the 323 European pipeline projects, 54% have not even specified their hydrogen blend capability.
Import infrastructure
Twelve hydrogen derivative import terminal projects exist across Europe, with Germany hosting six of them. None have reached construction or FID. Only 3 of 12 have defined capacity, and only 5 have set start dates. Most plan to import ammonia, but converting LNG terminals for hydrogen derivatives requires replacing most components, not just retrofitting.
All data and quoted findings from GEM Europe Gas Tracker 2025: Hydrogen edition. The GEM report characterizes the planned network as "a flawed decarbonization strategy" and notes that "the hydrogen hype could well prove to be a bubble."
Related brief: Finland's hydrogen pipeline and the missing buyer, a demand-first look at whether Gasgrid's 1,000 km network has a business case.
Data note
Planned pipelines (dashed lines) are from the GEM Europe Gas Tracker (January 2025 release). The GEM report states a total of 50,165 km across 323 projects; this map shows — features with route geometry totalling — (some projects share routes or lack geometry). PCI (Projects of Common Interest) status indicates EU co-funding eligibility and streamlined permitting under the TEN-E regulation.
Operating pipelines (solid pink lines) and storage sites (purple dots) are from the EU Clean Hydrogen Observatory infrastructure dataset (May 2025). These 18 pipelines (1,636 km total) are the hydrogen network that actually exists today, operated by industrial gas companies (Air Liquide, Linde, Air Products) primarily serving chemical and petrochemical plants in the Benelux, France, and Germany. The 4 storage pilot projects use salt caverns, depleted gas fields, and hard rock caverns.
The H2 Infrastructure Map Europe (ENTSOG/GIE/Eurogas joint initiative) catalogues a broader set including 180+ transmission pipelines, 80+ storage facilities, 30+ import terminals, and 250+ production sites. Their project counts serve as a cross-reference for coverage.
The gap, read honestly
Why fifty thousand kilometres are planned and thirty are being built
The world already operates about 5,000 km of hydrogen pipeline, and almost none of it has anything to do with the energy transition: they are legacy industrial lines connecting refineries and ammonia plants, roughly half of them the merchant networks of the US Gulf Coast (about 2,600 km, led by Air Products' network, built decades ago)[2,3]. Against that stands roughly 37,000 km announced worldwide to 2035, of which less than 6 percent has reached a final investment decision[2].
The bottleneck is not steel but demand. Low-emissions hydrogen was under 1 percent of the ~100 Mt hydrogen market in 2024, and the announced 2030 supply pipeline was cut from 49 to 37 Mt per year in a single year of project cancellations; operational-plus-FID capacity is 4.2 Mt[2]. Renewable hydrogen still costs roughly $3.7–11.7/kg against $1–2.9/kg for the fossil route, and the gap widened after 2022 as gas got cheaper and electrolyser costs inflated[2,4]. A pipeline is financeable when both ends are committed; almost nowhere are they.
Europe illustrates both directions at once. The European Hydrogen Backbone's 28,000 km by 2030 and 53,000 km by 2040 is a vision map, not a set of committed projects[5], and its members' flagships have slipped: Equinor and RWE cancelled the Norway–Germany hydrogen pipeline in 2024 for want of buyers, Denmark pushed its export backbone from 2028 to 2031, and the Dutch national network slid from 2030 to 2033 at about €3.8 billion[6,7,8]. The honest counterexample is Germany's approved 9,040 km Kernnetz, carried by a €24 billion state loan, whose first 525 km segments are mostly repurposed gas lines[2].
◐ inferred The pattern on this map is therefore a location lesson: hydrogen pipe exists where dense industrial hydrogen demand already exists, and the first credible new build-out is repurposed gas line anchored to committed industrial off-takers and state finance. Long lines drawn toward hoped-for demand are the part of the 50,000 km most likely to stay on paper.
Sources (9)
- [1] Global Energy Monitor, Europe Gas Tracker 2025: Hydrogen edition (CC BY 4.0). 50,165 km of hydrogen pipeline projects in development in Europe; 30 km under construction.
- [2] IEA, Global Hydrogen Review 2025 (trade and infrastructure; executive summary). ~5,000 km operating vs ~37,000 km announced to 2035, under 6% at FID; 2030 announced supply cut 49 to 37 Mt/yr; Germany's 9,040 km Kernnetz.
- [3] US Department of Energy, Hydrogen Pipelines: ~1,600 miles of merchant hydrogen pipeline operating in the US, concentrated on the Gulf Coast.
- [4] BloombergNEF, levelised cost of hydrogen update (December 2024): renewable H2 $3.74-11.70/kg vs grey $0.98-2.93/kg.
- [5] European Hydrogen Backbone initiative: ~28,000 km by 2030 and ~53,000 km by 2040 across 28 countries (vision maps).
- [6] Reuters (via World Pipelines), September 2024: Equinor and RWE cancel the Norway-Germany blue hydrogen pipeline for lack of viable demand.
- [7] Argus Media: Denmark's hydrogen export pipeline delayed from 2028 to 2031.
- [8] S&P Global Commodity Insights, December 2024: Dutch national hydrogen network delayed three years to 2033; cost ~EUR 3.8bn.
- [9] H2 Infrastructure Map Europe (ENTSOG/GIE/Eurogas), coverage cross-reference.
Pipeline geometries and the Europe planned/under-construction split from GEM (CC BY 4.0). Global built-vs-announced, demand and Kernnetz figures from the IEA Global Hydrogen Review 2025; US legacy-network scale from the US DOE and operator disclosures; costs from BNEF's published LCOH range. Project cancellations and delays cite the reporting outlets named. The closing read is this analyst's inference from those figures.