Closed

Cross-regional network and market model for optimisation of long duration storage

HORIZON Innovation Actions

Basic Information

Identifier
HORIZON-CL5-2025-02-D3-21
Programme
Cluster 5 Call 02-2025 (WP 2025)
Programme Period
2021 - 2027
Status
Closed (31094503)
Opening Date
May 6, 2025
Deadline
September 3, 2025
Deadline Model
single-stage
Budget
€5,000,000
Min Grant Amount
€5,000,000
Max Grant Amount
€5,000,000
Expected Number of Grants
1
Keywords
HORIZON-CL5-2025-02-D3-21HORIZON-CL5-2025-02

Description

Expected Outcome:

Project results are expected to contribute to all of the following expected outcomes:

  • Energy system planners and operators will deliver advanced tools to better optimise overall system value of Long-Duration Energy Storage (LDES) for cross-regional networks and markets dominated by intermittent and stochastic renewable energy sources.
  • Optimised LDES integration in relevant grid locations will help energy system stakeholders to maximise total lifetime cost-benefit, improved grid-operation as well as avoided fossil fuel use and CO2 abatement, renewable energy balancing and reduced need for network reinforcement;
  • Finetuned business cases for revenue stacking for multiple services as well as detailed overview of marginal abatement costs of various technologies and their combinations across the participating regions will help operators, planners and investors to take the right long term strategic decisions concerning LDES integration in the energy system.
  • Cost effective decarbonisation and market revenue streams to improve LDES economics (e.g., nodal and locational pricing) will increase investors trust and therefore accelerate LDES roll out.
Scope:

The project will develop and test new, advanced, integrated models and tools for cross-regional networks and markets that are dominated by intermittent and stochastic renewable energy sources. This spatial-temporal model should be designed to create, analyse and optimize scenarios for strategically integrating, locating and dimensioning LDES (here defined as: >12h) for a future European energy system.

The proposed solution will be tested under different scenarios in a relevant/operational environment. The project should be based on a complete understanding of existing operational systems in at least two adjacent regions (NUTS 2 or 3) – best represented in the form of a digital twin (or similar). Consortia should include the respective system operators, service providers, technology providers, potential financial actors and other relevant stakeholders.

The project should produce practical, operationally useful knowledge on cross-regional strategies for combining a variety of clean flexibility LDES solutions/technologies and cross-sector integration, focusing on the optimal combination of LDES with RES production sites, industrial complexes and districts (e.g. co-location and hybridisation), to support the grid.

This topic will analyse the overall system value of integration of LDES (>12h) in the energy system under different future decarbonisation pathways, assessing the impact on operation and planning of energy infrastructure costs as well as security of supply, system reliability and resiliency.

The scope is to maximise the benefit of LDES integration within the context of system wide optimisation of long-term grid enhancement strategies. This encompasses relevant, validated historical data sets, visualisation, scenario analysis, model sensitivity analysis and data set optimisation, optimal use of previously developed models and digital twins, cyber security, use of open-source solutions and free licensing.

The project is expected to identify technical and regulatory barriers, and propose possible recommendations and policy actions, to promote the best solutions tackling these barriers and support replication of the solutions.

Destination & Scope

This Destination includes activities targeting a sustainable, secure and competitive energy supply. In line with the scope of cluster 5, this includes activities in the areas of renewable energy; energy system, grids and storage; as well as Carbon Capture, Utilisation and Storage (CCUS).

This Destination contributes directly to the Strategic Plan’s Key Strategic OrientationsGreen transition’, ‘Digital transition’ and ‘A more resilient, competitive, inclusive and democratic Europe’.

In line with the Strategic Plan, the overall expected impact of this Destination is to contribute to the ‘Ensuring more sustainable, secure and competitive energy supply through solutions for smart energy systems based on renewable energy solutions’.

This destination contributes to the activities of the Strategic Energy Technology Plan (SET Plan) and its implementation working groups.

The main impacts to be generated by topics under this Destination are:

Renewable energy

  1. Energy producers have access to competitive European renewable energy and renewable fuel technologies and deploy them to enhance the EU’s energy security. This will contribute to the 2030 “Fit for 55” targets (in particular, at least 42.5% renewable energy share and aiming for 45% in the EU energy consumption, 5.5% advanced biofuels and renewable fuels of non-biological origin share in EU fuel consumption). It will also contribute to the indicative target of at least 5% innovative renewable energy technology for the newly installed renewable energy capacity. By 2050, climate neutrality in the energy sector will be achieved in a sustainable way in environmental (e.g., biodiversity, multiple uses of land and water, natural resources, pollution) and socioeconomic terms, and in line with the Sustainable Development Goals.
  2. Technology providers have access to European, reliable, sustainable, and affordable value chains of renewable energy and renewable fuel technologies.
  3. Economic sectors benefit from better integration of renewable energy and renewable fuel-based solutions that are among others cost-effective, efficient, flexible, reliable, and sustainable. Such integration is facilitated by digital technologies and by renewable energy technologies that provide network stability and reliability.
  4. European researchers benefit from a stronger community and from a reinforced scientific basis on renewable energy and renewable fuel technologies, also through international collaborations.
  5. European industries benefit from a reinforced export potential of renewable energy and renewable fuel technologies, also through international collaborations.
  6. European industries become frontrunners and maintain technological leadership in innovative renewable energy technologies in line with the energy union strategy.
  7. European citizens, including disadvantaged and vulnerable groups, have access to an energy market that is affordable, fair and equitable, more resilient, uses all different types of local renewable energy resources, and is less dependent on fossil fuels. Local communities benefit from a more decentralised and secure energy system and from multiple uses of land and water. Less citizens experience fuel and energy poverty.
  8. Strategic Energy Technology Plan (SET Plan) implementation working groups on solar photovoltaics, solar thermal technologies, renewable fuels and bioenergy, wind energy, geothermal energy, and ocean energy benefit from a reinforced scientific basis and collaboration on renewable energy and renewable fuel technologies towards meeting the ambitious targets of the European Green Deal.

Energy systems, grids & storage

R&I actions will support the just digital and green transformation of the energy system through advanced solutions for accelerating the energy systems integration and decarbonisation. The developed clean, sustainable solutions will contribute to making the energy system and supply more reliable, resilient, and secure. The solutions will contribute to increase flexibility and grid hosting capacity for renewables through optimising cross sector integration and grid scale storage. They will enhance the competitiveness of the European value chain, reduce pressure on resources (also by making technologies ‘circular by design’) and decrease dependencies.

Innovative and cost-effective energy storage (integration) solutions are developed, that provide flexibility to the energy system, reduce total cost of grid operation and enhancement and that minimise the use of critical raw materials and ensure, to the best extent possible, their reuse and recycling, are key elements of the energy system.

Carbon capture, use and storage (CCUS) and carbon dioxide removal (CDR)

  1. Accelerated development of carbon capture, use and storage (CCUS) as a CO2 emission mitigation option in electricity generation, in industry applications and carbon dioxide removal technologies (including conversion of CO2 to energy products).
  2. Reduced EU’s dependency on imported fossil fuels and increased energy security, reduced energy system’s vulnerability to the impacts of the changing climate.

Eligibility & Conditions

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.

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 Eligible Conditions

The following exceptions apply: subject to restrictions for the protection of European communication networks.

described in Annex B of the Work Programme General Annexes.

4. Financial and operational capacity and exclusion

described in Annex C of the Work Programme General Annexes.

5a. Evaluation and award: Award criteria, scoring and thresholds

are described in Annex D of the Work Programme General Annexes.

5b. Evaluation and award: Submission and evaluation processes

are described in Annex F of the Work Programme General Annexes and the Online Manual.

5c. Evaluation and award: Indicative timeline for evaluation and grant agreement

described in Annex F 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]].

described in Annex G of the Work Programme General Annexes.

Specific conditions

described in the [specific topic of the Work Programme]

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Latest Updates

Last Changed: September 5, 2025

PROPOSAL NUMBERS  

Call HORIZON-CL5-2025-02 has closed on the 03/09/2025 (17:00). 

233 proposals have been submitted. 

The breakdown per topic is: 

  • HORIZON-CL5-2025-02-D2-03 (IA): 16 proposals 
  • HORIZON-CL5-2025-02-D2-06 (CSA): 1 proposal 
  • HORIZON-CL5-2025-02-D2-08 (RIA): 38 proposals 
  • HORIZON-CL5-2025-02-D2-10 (COFUND): 1 proposal 
  • HORIZON-CL5-2025-02-D2-11 (CSA): 20 proposals 
  • HORIZON-CL5-2025-02-D2-12 (CSA): 0 proposals 
  • HORIZON-CL5-2025-02-D3-03 (IA): 17 proposals 
  • HORIZON-CL5-2025-02-D3-04 (RIA): 19 proposals 
  • HORIZON-CL5-2025-02-D3-06 (IA): 23 proposals 
  • HORIZON-CL5-2025-02-D3-09 (IA): 2 proposals 
  • HORIZON-CL5-2025-02-D3-11 (IA): 18 proposals 
  • HORIZON-CL5-2025-02-D3-15 (CSA): 12 proposals 
  • HORIZON-CL5-2025-02-D3-16 (CSA): 2 proposals 
  • HORIZON-CL5-2025-02-D3-17 (IA): 7 proposals 
  • HORIZON-CL5-2025-02-D3-21 (IA): 12 proposals 
  • HORIZON-CL5-2025-02-D3-25 (RIA): 14 proposals 
  • HORIZON-CL5-2025-02-D3-26 (RIA): 1 proposal 
  • HORIZON-CL5-2025-02-D3-27 (IA): 30 proposals 

 

 Evaluation results are expected to be communicated in December 2025. 



Last Changed: September 2, 2025

Please note that the deadline of all 18 topics under call HORIZON-CL5-2025-02 has been postponed from 02 September 2025 to 03 September 2025 - 17:00:00 Brussels local time.

Last Changed: May 9, 2025
The submission session is now available for: HORIZON-CL5-2025-02-D3-09, HORIZON-CL5-2025-02-D3-26, HORIZON-CL5-2025-02-D2-11, HORIZON-CL5-2025-02-D3-15, HORIZON-CL5-2025-02-D3-11, HORIZON-CL5-2025-02-D3-17, HORIZON-CL5-2025-02-D3-25, HORIZON-CL5-2025-02-D2-12, HORIZON-CL5-2025-02-D3-16, HORIZON-CL5-2025-02-D2-10, HORIZON-CL5-2025-02-D3-04, HORIZON-CL5-2025-02-D2-03, HORIZON-CL5-2025-02-D3-21, HORIZON-CL5-2025-02-D3-27, HORIZON-CL5-2025-02-D3-03, HORIZON-CL5-2025-02-D3-06, HORIZON-CL5-2025-02-D2-08, HORIZON-CL5-2025-02-D2-06
Cross-regional network and market model for optimisation of long duration storage | Grantalist