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Gas grid operators unveil plan for ‘backbone’ of Europe’s hydrogen infrastructure

Gas grid operators unveil plan for 'backbone' of Europe's hydrogen infrastructure

A group of eleven European gas infrastructure companies from nine EU member states have presented plans to create a dedicated hydrogen pipeline network of almost 23,000 km by 2040, to be used in parallel to the natural gas grid.

The “European hydrogen backbone” was presented in a vision paper developed by transmission system operators Enagás, Energinet, Fluxys Belgium, Gasunie, GRTgaz, NET4GAS, OGE, ONTRAS, Snam, Swedegas (Nordion Energi), Teréga, and consultancy company Guidehouse.

The proposed network will run through Germany, France, Italy, Spain, the Netherlands, Belgium, Czech Republic, Denmark, Sweden and Switzerland.

“We see the European Hydrogen Backbone as a critical piece of the puzzle” to decarbonising energy, the companies write, saying they “fully support the European Green Deal”.

The “backbone” will connect future hydrogen supply and demand centres across Europe, such as industrial clusters, carbon capture and storage locations and large scale renewable electricity production sites, including off-shore wind farms in the North Sea and solar power plants in the South of Europe.

Constructing a hydrogen infrastructure will make it easier to scale up both the production and use of hydrogen, the gas operators say.

“This paper concludes that the cost of such a European Hydrogen Backbone can be very modest compared to the foreseen size of the hydrogen markets. That is why we now propose to launch it as a ‘first mover’, facilitating developments on the supply and demand side,” the group adds.

Once volumes and distances of hydrogen transport increase, pipelines will be an efficient and cost-effective option, the operators explain.

The amount of electricity required for transporting hydrogen over a distance of 1,000 km is comparable to around 2% of the energy content of the transported hydrogen – although that electricity will not necessarily be produced from hydrogen, the report says.

According to a “preliminary estimation” cited in the report, the proposed network should be able to transport more than the expected 1,130 TWh of annual hydrogen demand in Europe by 2040 and cost between €27 and €64 billion.

“These costs are relatively limited in the overall context of the European energy transition and substantially lower than earlier rough estimations,” the report states.

The “modest” price tag of the project is partly due to the assumption that 75% of the network will consist of retrofitted natural gas pipelines – which are gradually expected to become redundant as volumes of natural gas decrease in the future.

The plan comes on the back of the energy system integration and hydrogen strategies presented by the European Commission on 8 July, which mentioned the need to build a dedicated hydrogen pipeline network in the future.

Hydrogen is considered a key enabler to decarbonise industries such as steel and chemicals as well as heavy-duty transport. It can also be used as a storage medium, helping to balance the electricity grid during peak demand.

To boost the nascent European hydrogen industry, the European Commission also launched a European Clean Hydrogen Alliance, bringing together industry leaders, civil society, national and regional ministers and the European Investment Bank.

Three phases of development

According to the eleven operators, the proposed network will gradually develop over fifteen years, starting from the mid-2020s:

  • By 2030, an “initial” pipeline network of 6,800 km will connect local clusters of hydrogen production and use – so-called “hydrogen valleys”.
  • By 2035, a stretched network will start connecting consumers in the centre of the continent to regions with “abundant green hydrogen resource potential” – such as Danish offshore wind farms or solar and wind farms in the south of France.
  • By 2040, a truly pan-European network of just over 22,900 km is foreseen, which will be running across ten European countries and allow connections with global import routes.

The coverage of the planned network does not indicate a lack of hydrogen ambitions in countries that are not included, the operators explained during an online presentation of the paper.

“The selection of countries doesn’t reflect the hydrogen possibilities or hydrogen timing of any of the countries. It is mainly a function of the group of companies that were already working together to start this initiative,” said Camilla Palladino, executive vice president at Snam, the Italian gas operator.

“The group of gas infrastructure companies is convinced that the hydrogen backbone will eventually cover the entire EU. The group invites other European gas infrastructure companies to join in the thinking to further develop the backbone plan,” the group stated in a press release.

Retrofitting pipelines and replacing compression equipment

“Ultimately, two parallel gas transport networks will emerge: a dedicated hydrogen and a dedicated (bio)methane network,” the group explained.

That doesn’t mean that the absolute amount of pipelines in the ground will double.

By 2040, the natural gas network will be much more limited in capacity – transporting only half of today’s volumes – and a much larger share of that will be biogas instead of natural gas.

Pipelines that were once built to transport natural gas could, therefore, be freed to transport hydrogen instead.

“Retrofitting is often achieved through conversion of existing pipelines where parallel (“looped”) routes are available,” the paper explains. “This is the case in areas in the Netherlands, Germany, France, Spain, and Italy, where pipeline availability is not constrained by long-term natural gas commitments and capacity contracts.”

According to the grid operators, repurposing pipelines to transport hydrogen is perfectly feasible, although locational differences exist – for instance, because of the pressure, dimensions and status of the pipelines that are in place.

“Pipelines themselves need little modification,” the group says. “Initial discussions with manufacturing companies suggest that the capital cost of repurposing existing pipelines represents 10-25% of that of building new dedicated hydrogen pipelines.”

A bigger challenge is related to compressor stations which – due to the physical properties of hydrogen – might have to be replaced altogether.

Views vary amongst transmission system operators and compressor manufacturing companies on this point.

“Whereas some see a potential to retrofit existing stations, other studies suggest that existing stations may not be fit for hydrogen’s higher gas volumes,” the group says.

All in all, around 60% of the total investment costs will be related to pipeline works, with compression equipment accounting for the remaining 40%.

Transporting a kg of hydrogen is estimated to cost between €0.09-0.17 per 1,000 km, depending mainly on what the compressor costs will turn out to be.

“These values show that pipeline transmission costs only represent a small portion of total hydrogen costs when considering the full value chain from production through to end consumption,” the paper concludes.

“Even assuming future production costs of 1-2 €/kg for green and blue hydrogen, transport through the hydrogen backbone will add less than 10% on top of production costs for 1,000 km transported.”

The transportation costs cited in the paper include costs for the pipelines, compressor stations, control valves and gas metering stations. Hydrogen storage, distribution pipelines and CO2 infrastructure costs were not included in the calculation.

Original article here. Further information on renewables and how we can help in turning your organisation’s green and net-zero ambitions into ACTION here.

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