Towards exploration and evaluation of European natural hydrogen potential

Topic updates

24 April 2025

CALL UPDATE: PROPOSAL NUMBERS

Call HORIZON-JU-CLEANH2-2025 has closed on the 23/04/2025.

212 proposals have been submitted.

The breakdown per topic is:

RENEWABLE HYDROGEN PRODUCTION

-HORIZON-JU-CLEANH2-2025-01-07: 15 proposals

Evaluation results are expected to be communicated in August 2025.

15 April 2025

Notice to Applicants (15/04/2025)

Please note that we will no longer be accepting questions regarding the current call for proposals HORIZON-JU-CLEANH2-2025. We appreciate your interest and encourage you to refer to the published documentation for any remaining clarifications.

15 April 2025Errata Notice - Topic HORIZON-JU-CLEANH2-2025-01-05

The correct text for topic HORIZON-JU-CLEANH2-2025-01-05 stipulates:

"Furthermore, project results are expected to contribute to the following KPIs, targeted at co-electrolyser scale, specific for three high temperature co-electrolysis technologies: Oxide and Proton conductive Solid Oxide electrolysers (SOEL, PCCEL) and Molten Carbonate Electrolyser (MCE):

Oxide conductive Solid Oxide electrolysers (SOEL)

Power to syngas efficiency: 0.9 kWLHV /kWe
Degradation in operating conditions: 0.8 %/1000h @1A/cm²
Unit cost: 500 €/kW
Proton Conductive Ceramic electrolysers (PCCEL)

Power to syngas efficiency: 0.9 kWLHV/ kWe
Degradation in operating conditions: 0.8 %/1000h @0.75A/cm²
Unit cost: 500 €/kW
Molten Carbonate electrolysers (MCE)

Power to syngas efficiency: 0.93 kWLHV/ kWe
Degradation in operating conditions: 0.5 %/1000h @0.5A/cm²
Unit cost: 500 €/kW
KPIs are defined for the main high temperature co-electrolysis techniques, derived from the SRIA and from results of previous EU funded projects."

03 April 2025

Errata Notice – Topic Conditions

We appreciate your attention to this information. Please be advised that the Topic Conditions are provided below, as they were not displayed correctly under each topic. These conditions apply to all topics across the entire call.

We kindly ask you to refer to the information below and in the AWP2025 to ensure compliance with the applicable requirements.

General conditions

1. Admissibility Conditions: Proposal page limit and layout
described in Annex A and Annex E of the Horizon Europe Work Programme General Annexes.

Proposal page limits and layout: described in Part B of the Application Form available in the Submission System.

Page limit for Innovation Actions: For all Innovation Actions the page limit of the applications are 70 pages.

2. Eligible Countries
described in Annex B of the Work Programme General Annexes.

A number of non-EU/non-Associated Countries that are not automatically eligible for funding have made specific provisions for making funding available for their participants in Horizon Europe projects. See the information in the Horizon Europe Programme Guide.

3. Other Eligibility Conditions
described in Annex B of the Work Programme General Annexes.

6. Legal and financial set-up of the grants
Eligible costs will take the form of a lump sum as defined in the Decision of 7 July 2021 authorising the use of lump sum contributions under the Horizon Europe Programme – the Framework Programme for Research and Innovation (2021-2027) – and in actions under the Research and Training Programme of the European Atomic Energy Community (2021-2025) [[This decision is available on the Funding and Tenders Portal, in the reference documents section for Horizon Europe, under ‘Simplified costs decisions’ or through this link: https://ec.europa.eu/info/funding-tenders/opportunities/docs/2021-2027/horizon/guidance/ls-decision_he_en.pdf]].

In addition to the standard provisions, the following specific provisions in the model grant agreement will apply:

1. Lump Sum

This year’s call for proposals will take the form of lump sums as defined in the Decision of 7 July 2021 authorising the use of lump sum contributions under the Horizon Europe Programme – the Framework Programme for Research and Innovation (2021- 2027) – and in actions under the Research and Training Programme of the European Atomic Energy Community (2021-2025).

Lump sums will be used across all topics in the Call 2025.

3. Subcontracting

For all topics: an additional obligation regarding subcontracting has been introduced, namely that subcontracted work may only be performed in target countries set out in the call conditions.

The beneficiaries must ensure that the subcontracted work is performed in the countries set out in the call conditions.

The target countries are all Member States of the European Union and all Associated Countries.

31 March 2025
The excel detailed budget table available in the submission system “Download Part B templates” section had outdated values for the SME owner unit cost category.

Today, the issue has been rectified and the template available is the correct version, containing up-to-date values for the SME owner unit cost category.

Please make sure you download and use the correct budget table in your submission.

For the applicants that have already submitted their proposals, please be aware that the system still allows you to edit and re-submit your proposal using the updated excel template.

Towards exploration and evaluation of European natural hydrogen potential

TOPIC ID: HORIZON-JU-CLEANH2-2025-01-07

Type of grant: Call for proposals

General information

Programme: Horizon Europe (HORIZON)

Call: HORIZON-JU-CLEANH2-2025 (HORIZON-JU-CLEANH2-2025)

Type of action: HORIZON-JU-RIA HORIZON JU Research and Innovation Actions

Type of MGA: HORIZON Lump Sum Grant [HORIZON-AG-LS]

Status: Forthcoming

Deadline model: single-stage

Planned Opening Date: 15 January 2025

Deadline dates: 23 April 2025 17:00 (Brussels time)

Topic description

Expected Outcome:

Although natural hydrogen is produced via various physical phenomena taking place in the Earth’s subsurface, notably fluid-rock interactions, the discoveries have all been accidental, limited in investigation, and only harnessed in Mali. As such, natural hydrogen is a potential new source of clean hydrogen which can play a significant role in Europe to meet the objectives set out in the Fit-for-55 Package and REPowerEU plan.

In the future, the potential of natural hydrogen accumulations in the subsurface should be determined and exploited in Europe in a safe and sustainable way to complement other routes of hydrogen production. Indeed, natural hydrogen may contribute to limiting greenhouse gas emissions, raw materials, water resources, and land use as compared to other types of hydrogen production, hereby strengthening the EU energy independency while accelerating the implementation of the hydrogen energy economy and thus the net-zero energy transition. Nevertheless, current needs are to develop methods and workflows to efficiently explore this resource, increase public support, and evaluate economically viable industrial solutions.

Project results are expected to contribute to the following outcomes:

• Strengthened European leadership in the exploration of natural hydrogen to identify and evaluate reserves and seek industrial production;
• Improved understanding of the occurrence and the resource potential of natural hydrogen in Europe, to define prospective areas for exploration and production (E&P);
• Identification of enablers and barriers in terms of regulation, social acceptability, market, and financial incentives to stimulate the E&P of natural hydrogen for European countries.

Scope:

Natural hydrogen is a resource that has recently come under the spotlight for its potential to accelerate the shift to a net-zero economy within the next decades. However, its production is critically challenged by the relatively limited understanding of the processes and geological conditions of its generation, the lack of well-proven workflows and the development of standard methods for its exploration. Efficient detection methods are required to identify promising areas prone to regional exploration, while analytical and numerical workflows are needed to quantify the potential of a geological formation to hold adequate volumes of natural hydrogen for production at an industrial scale. This requires knowledge improvement of the subsurface processes controlling the generation, migration and trapping of hydrogen in economically relevant quantities.

This topic aims to support both the development of new methods, technologies, and workflows that will enable the development of E&P of natural hydrogen in Europe. It will bridge the gap between Research and Innovation (R&I), regulatory framework, and economic investments to boost the energy transition.

Proposals in this call should aim at better understanding the mechanisms related to natural hydrogen generation and accumulation in the subsurface, developing specific tools and methods to assess the resource potential, demonstrating its environmentally and economically viable exploitation, and informing adequate regulation and policies in Europe for large-scale deployment.

Proposals should address most of the following elements:

• Development of techniques, tools, and methods to better characterise and understand processes controlling the formation, migration, and accumulation of hydrogen in the subsurface as well as natural emissions to the surface, and to establish a set of criteria to confidently identify prospective areas. Proposals should include at least one case study area (two if the budget allows it) to test remote sensing and hydrogen sensors, gather geophysical data from active or passive seismic, gather geochemical data, possibly logging tool (tools which are run into the well after drilling and which, with specific development would help to characterize hydrogen in the well) in order to calibrate methods with minimal environmental impact;
• Guidelines for systematically identifying potential natural hydrogen sources in Europe by determining the combination of key parameters and conditions necessary to its generation;
• Analogue experiments to simulate in situ conditions (temperatures, pressures, rock mineralogy and chemistry, geofluid compositions) controlling the generation of natural hydrogen and its kinetic (in mol/kg/s);
• Numerical models to predict the dynamics of large hydrogen systems, from the source (generation, migration, and alteration), trapping in reservoirs if appropriate, to emission/leakage at the surface. It should allow the determination of a “Hydrogen Window” i.e. both chemical and physical subsurface conditions to generate natural hydrogen, applicable on specific or general conditions. Ultimately, the numerical models should allow quantifying the possible volume (in tonnes) and production rate (in tonnes/year) of selected sites of natural hydrogen in Europe in the coming years and characterizing its potential renewable aspect;
• Characterisation of purification requirements of selected expected gas compositions, identification of possible technologies, and test of their performances at laboratory scale.
• Life Cycle Assessment to determine the environmental performance of exploring, extracting, and producing natural hydrogen at this early stage of knowledge and at relevant specifications (i.e. including purification and other post-production treatments) notably in terms of (i) Greenhouse gas emissions range (in kg CO₂ eq. per kg H₂ produced) including possible associated gases and fugitive leakages, (ii) critical raw materials use, (iii) water resources consumption, and (iv) land use;
• A check (based on the LCA results) whether natural hydrogen can be classified as Renewable Fuels of Non-Biological Origin (RFNBO) established under the Renewable Energy Directive (RED II). This would allow framing natural hydrogen into EU certifications which will ensure a commercialisation of the natural hydrogen to clients willing to decarbonise their activities. Elements to establish the right taxonomy of natural hydrogen to be certified under EU certification schemes should be provided;
• A conceptual study to assess the levelized cost range of hydrogen production (in € per kg H₂ produced) taking into account, key parameters such as drilling design, operational costs, periodic work-over, abandonment costs, purification requirement, expected volume and well deliverability. A parametric model integrating the outputs of the conceptual study will allow the economic assessment of prospects on a case-by-case basis.
• At the same time, a bottleneck is to access these reserves in a safe and cost-efficient manner. Thus, research on identifying challenges related to well construction, drilling dynamics, and how to address them, will provide tools and methods to advance exploration and production of natural hydrogen, and mitigate leakages from prospection to exploitation;

In addition, proposals may address the following:

• Identification, description, and evaluation of the specific geological formations, processes, and settings that can potentially produce natural hydrogen in economically viable quantities in Europe;
• The social acceptability of these projects is also key to operate. Protocols are needed to improve public perception and acceptance including communication strategies dedicated to specific stakeholders with emphasis on the local benefits provided by the resources, and on the activities and their related safety risk mitigation;
• Mitigate the risks related to the safety of handling hydrogen in such quantities and opposition by the public, to accelerate the transition towards low-carbon energy solutions.

As relevant, proposals are encouraged to involve European and national geological research institutes.

For additional elements applicable to all topics please refer to section 2.2.3.2.

Activities are expected to start at TRL 2 and achieve TRL 4 by the end of the project - see General Annex B.

The JU estimates that an EU contribution of maximum EUR 2.00 million would allow these outcomes to be addressed appropriately.

The conditions related to this topic are provided in the chapter 2.2.3.2 of the Clean Hydrogen JU 2025 Annual Work Plan and in the General Annexes to the Horizon Europe Work Programme 2023–2025 which apply mutatis mutandis.

Start submission

The submission system is planned to be opened on the date stated on the topic header.

Get support

Online Manual is your guide on the procedures from proposal submission to managing your grant.

Horizon Europe Programme Guide contains the detailed guidance to the structure, budget and political priorities of Horizon Europe.

Funding & Tenders Portal FAQ – find the answers to most frequently asked questions on submission of proposals, evaluation and grant management.

Research Enquiry Service – ask questions about any aspect of European research in general and the EU Research Framework Programmes in particular.

National Contact Points (NCPs) – get guidance, practical information and assistance on participation in Horizon Europe. There are also NCPs in many non-EU and non-associated countries (‘third-countries’).

Enterprise Europe Network – contact your EEN national contact for advice to businesses with special focus on SMEs. The support includes guidance on the EU research funding.

IT Helpdesk – contact the Funding & Tenders Portal IT helpdesk for questions such as forgotten passwords, access rights and roles, technical aspects of submission of proposals, etc.

European IPR Helpdesk assists you on intellectual property issues.

CEN-CENELEC Research Helpdesk and ETSI Research Helpdesk – the European Standards Organisations advise you how to tackle standardisation in your project proposal.

The European Charter for Researchers and the Code of Conduct for their recruitment – consult the general principles and requirements specifying the roles, responsibilities and entitlements of researchers, employers and funders of researchers.

Partner Search help you find a partner organisation for your proposal.