Pipeline between Barcelona and Marseille: an ambitious but risky project

The hydrogen pipeline project between Barcelona and Marseille, which was discussed today on the sidelines of a summit in Spain of southern EU countries, is considered essential for Europe's energy sovereignty, but is based on a risky bet.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

The ambitious “green” hydrogen pipeline project between Barcelona and Marseille H2Med, officially launched Friday in Alicante, Spain, will be operational in 2030 and cost about 2.5 billion euros, French and Spanish leaders announced. This project should be “completed by 2030,” said French President Emmanuel Macron after a meeting with the heads of government of Spain and Portugal, Pedro Sanchez and Antonio Costa.

For his part, Mr. Sanchez said that the cost of construction of H2Med should “approach 2.5 billion euros. This pipe will transport by 2030 some two million tons of hydrogen per year, he also said.

This project will be submitted by December 15 to the European Commission in order to benefit from the status of “project of common interest” and therefore European funding, added Macron. Present at the meeting between the Spanish, French and Portuguese leaders, the President of the European Commission, Ursula von der Leyen, “warmly welcomed” this agreement between the three countries, which “goes in the right direction”.

This undersea pipeline is designed to transport so-called “green” hydrogen, produced from renewable electricity, from the Iberian Peninsula, which aims to become a champion of this energy of the future, to France and the north of the EU.

This project replaces the “MidCat”, launched in 2003 to link the French and Spanish gas networks via the Pyrenees, but finally abandoned due to its lack of economic interest, the opposition of environmentalists and that of Paris.

Schedule, cost, route… Here is what we know at this stage about this initiative launched jointly by Madrid, Lisbon and Paris. What does this project consist of? Called “H2Med” or “BarMar” (a contraction of Barcelona-Marseille), this undersea pipeline is intended to transport gas and then so-called “green” hydrogen – because it is made from renewable electricity – from Spain to France and the north of the EU.

 

This project, announced on October 20 at a European summit, replaces the “MidCat”, launched in 2003 to link the French and Spanish gas networks via the Pyrenees, but finally abandoned because of its lack of economic interest, the opposition of environmentalists and that of Paris.

What are the objectives of the “Corridor”?

The H2Med aims first of all to reduce Europe’s dependence on Russian gas by improving gas interconnections between the Iberian Peninsula and its neighbors. Spain and Portugal have 40% of the EU’s regasification capacity, but are poorly connected to the rest of the EU member states.

Above all, this pipeline will ultimately accelerate the decarbonization of European industry by giving it access to clean energy produced on a large scale, as Spain and Portugal prepare to become world leaders in green hydrogen, thanks to their numerous wind and photovoltaic farms.

 

Why Marseille and Barcelona?

According to the promoters of the project, this connection is “the most direct and efficient option to connect the Iberian Peninsula to Central Europe”. In fact, Barcelona hosts “one of the largest LNG terminals” in the EU and occupies “a place of choice in the Spanish gas network”, said to AFP José Ignacio Linares, professor at the Pontificia Comillas University in Madrid. Marseille is well connected to the French network. It is also an interesting gateway to serve the Rhone Valley, Germany and even northern Italy, industrial regions that will become major consumers of green hydrogen.

Which route?

The exact route of the pipeline has not yet been communicated, but “the most logical” would be that it “follows the coast”, in order to avoid underwater areas that are too deep, according to Linares.
In this case, the H2Med would make about 450 kilometers. But a slightly different route is not excluded, the persons in charge of the project having to find “the most stable grounds possible”, even if it means to move away a little from the coast, specifies the researcher.

What obstacles?

H2Med faces several technical difficulties, partly related to its novelty. “A submarine hydrocarbon pipeline at this depth, at this distance, has never been done”, underlines Gonzalo Escribano, expert of the Spanish study center “Real Instituto Elcano”.

For José Ignacio Linares, one of the main problems is the nature of hydrogen, a gas made up of small molecules that can escape through the joints of the pipeline and are also extremely aggressive, which can lead to corrosion problems. But these problems “are not insurmountable”, underlines this engineer of formation. “All you have to do is install a membrane inside the pipe, some kind of plastic, to prevent the hydrogen from escaping or attacking” the metal, he adds.

What future?

The real risk, for the experts, is the economic viability of the project. Since the technology is still in its infancy, “we don’t know when the green hydrogen market will take off, when we will be able to produce enough to export it,” says Escribano.

 

This will turn the construction of the H2Med into an industrial bet. “The problem is that the construction time for a pipeline is so long that we can’t afford to wait. Otherwise, we’ll end up with a lot of hydrogen production that we won’t be able to export,” says Linares. Linares.

The partnership includes local manufacturing in Poland of electrolysis systems using Elogen’s technology, with deliveries targeting the Europe, Middle East and Africa markets.
Vema Hydrogen has been named a qualified supplier by the First Public Hydrogen Authority to deliver clean hydrogen at industrial scale to California’s public and private infrastructure.
Le groupe français HRS a signé une commande pour la livraison d'une station hydrogène haute capacité, renforçant sa présence dans un réseau en expansion à l’échelle européenne.
With a $14mn investment, Enap progresses on the construction of its first green hydrogen plant, expected to be operational in early 2026 in the Magallanes region of southern Chile.
Plug completed the first delivery of 44.5 tonnes of hydrogen for the H2CAST project in Germany and secured a new contract for an additional 35 tonnes, confirming its logistical capabilities in the European market.
Gushine Electronics has opened a lithium battery plant in Vietnam, with an estimated annual production value of $100 mn, marking a new phase in the international deployment of its industrial capacities.
Indonesian nickel producer Anugrah Neo Energy Materials plans a $300mn IPO in December to finance its growing battery materials operations.
Sultan Qaboos University announces a breakthrough in water electrolysis using new rare-metal catalysts, improving production efficiency by more than 30%.
Standard Lithium a sécurisé $130mn via une émission d’actions ordinaires pour financer ses projets d’extraction de lithium en Arkansas et au Texas, consolidant sa position sur le marché nord-américain des métaux stratégiques.
Asset manager Quinbrook expands its North American portfolio with a first Canadian investment by acquiring a strategic stake in developer Elemental Clean Fuels.
Lhyfe commissions a 10 MW site in Schwäbisch Gmünd, its first in Germany, to supply RFNBO-certified green hydrogen to industrial and heavy mobility clients.
Brookfield will invest up to $5 billion in Bloom Energy's fuel cells to power future artificial intelligence factories, initiating the first phase of a dedicated global digital infrastructure strategy.
Metacon acquired components from the bankruptcy estate of Hynion Sverige AB for SEK3.5mn ($320,000), aiming to support its hydrogen refuelling station projects in Sweden.
The United Kingdom has carried out its first real-life trial of green hydrogen blending into the national gas transmission network, with power generation as a result.
Swedish company Liquid Wind has secured €3.6mn in public funding for the engineering phase of its eMethanol plant, integrated into a biomass-fuelled cogeneration site.
The Japanese industrial group will replace a 73.5 MW coke and gas-fired turbine with a 30 to 40 MW hydrogen-ready unit, scheduled to start operations in 2030 with ¥7.1bn ($47mn) in public support.
A two-year project aims to identify areas in Texas suitable for natural hydrogen exploitation, despite challenges related to infrastructure, public policy and economic viability.
Plug Power has announced the appointment of Jose Luis Crespo as President effective October 10, before assuming the role of Chief Executive Officer once the company publishes its annual report, expected in March 2026.
Plug Power finalised a deal with an institutional investor to raise $370mn through the immediate exercise of warrants, with the possibility of securing an additional $1.4bn if new warrants are exercised.
Air Liquide announces a $50mn investment to strengthen its hydrogen network on the US Gulf Coast, following long-term contracts signed with two major American refiners.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.