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This round is closed. The next round and similar open calls are listed below. Synced from the EU Funding & Tenders Portal on 9 November 2026.
This call is closed. These open or upcoming calls fund the closest work.
Based on projects the EU funded on the same subject in this programme.
AGISTINAdvanced Grid Interfaces for innovative STorage INtegration
HORIZON-CL5-2022-D3-01-11 · 2023 · Official record ↗
SETplan 2025The 19th Strategic Energy Technology (SET) Plan Conference: Strategic energy technologies for a competitive, secure and sustainable Europe.
HORIZON-CL5-2025-SETPLAN-IBA · 2025 · Official record ↗
HiHELIOSdemonstrating a High-energy and High-power hybrid battery storagE soLutIonS platform for multiple grid services
HORIZON-CL5-2023-D2-01-05 · 2024 · Official record ↗
SMHYLESSafe, sustainable and Modular HYbrid systems for Long-duration Energy storage and grid Services
HORIZON-CL5-2023-D2-01-05 · 2024 · Official record ↗
BEST-StorageBUILDING ENERGY EFFICIENT SYSTEM THROUGH SHORT AND LONG SPECTRUM THERMAL ENERGY STORAGE
HORIZON-CL5-2022-D3-01-14 · 2023 · Official record ↗
ENPOWEREnergy Activated Citizens and Data-Driven Energy-Secure Communities for a Consumer-Centric Energy System
HORIZON-CL5-2022-D3-01-08 · 2023 · Official record ↗
Air4NRGAir isothermal compression technology for long term energy storage
HORIZON-CL5-2023-D3-01-13 · 2024 · Official record ↗
i-STENTOREinnovative Energy Storage TEchnologies TOwards increased Renewables integration and Efficient Operation
HORIZON-CL5-2022-D3-01-11 · 2023 · Official record ↗
Each one links to its EU funding record and the partners it works with: a starting list for building a consortium.
Project results are expected to contribute to some of the following expected outcomes:
Development of novel solutions, which address specifically critical aspects affecting the energy security of energy network and/or storage technologies in respect of uninterrupted and cost-effective access to energy. As energy security of the energy grid and safe storage of variable renewables is directly related to a cost-effective and sustainable European energy system and therefore essential to European competitiveness, not only energy security aspects of the grid and storage technologies as such, but also those related to their respective value chains need to be addressed. Proposals should focus on development of solutions for grid and/or storage technologies, which can highly improve their sustainability, resilience, and overall energy security performance in the European context in the long run. Proposals should take into consideration the results of the Study on clean energy R&I opportunities to ensure European energy security by targeting challenges of distinct energy value chains for 2030 and beyond[1].
Project should address precisely only one of the following areas:
Area 1- Advanced tools to address cybersecurity risks to 1) energy system transmission and distribution and 2) renewables to storage and storage to energy network interface technologies;
Area 2- Increasing circular economy processes, recycling, re-use or substitution of sustainably supplied critical materials and electronics for energy network and storage technologies;
Area 3- Sustainability and public perception of energy network and storage technologies as a limiting factor for their required capacity build-up and efficient performance in a secure energy system (e.g., hydropower, CAES storage).
Furthermore, a framework for decent working conditions, most notably essential skills, and efficient skills management within the overall energy network and storage system are essential for inclusivity and competitiveness of these systems. They should be addressed as an important transversal value chain component.
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Activities are expected to achieve TRL 4-5 by the end of the project – see General Annex B. Activities may start at any TRL.
[1] European Commission, Directorate-General for Research and Innovation, Schleker, T., Hicks, M., Cressida Howard, I. et al., Study on clean energy R&I opportunities to ensure European energy security by targeting challenges of distinct energy value chains for 2030 and beyond final report, Schleker, T.(editor), Publications Office of the European Union, 2024, https://data.europa.eu/doi/10.2777/906828
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
If projects use satellite-based earth observation, positioning, navigation and/or related timing data and services, beneficiaries must make use of Copernicus and/or Galileo/EGNOS (other data and services may additionally be used).
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
Proposals are expected to clearly address only one of the areas within the scope (area 1, 2 or 3).
To ensure a balanced portfolio covering all above areas, grants will be awarded to applications not only in order of ranking but at least also to one project that is the highest ranked within each area, provided that the applications attain all thresholds (and subject to available budget).
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.
described in the [specific topic of the Work Programme]
Application and evaluation forms and model grant agreement (MGA):
Application form templates — the application form specific to this call is available in the Submission System
Standard application form (HE RIA IA Stage 2)
Evaluation form templates — will be used with the necessary adaptations
Standard evaluation form (HE RIA IA Stage 2)
Guidance
HE Programme Guide
Model Grant Agreements (MGA)
Lump Sum MGA
Call-specific instructions
Detailed budget table (HE LS)
Guidance: "Lump sums - what do I need to know?"
Additional documents:
HE Main Work Programme 2025 – 1. General Introduction
HE Main Work Programme 2025 – 8. Climate, Energy and Mobility
HE Main Work Programme 2025 – 14. General Annexes
HE Programme Guide
HE Framework Programme 2021/695
HE Specific Programme Decision 2021/764
EU Financial Regulation 2024/2509
Decision authorising the use of lump sum contributions under the Horizon Europe Programme
Rules for Legal Entity Validation, LEAR Appointment and Financial Capacity Assessment
EU Grants AGA — Annotated Model Grant Agreement 
Funding & Tenders Portal Online Manual 
Funding & Tenders Portal Terms and Conditions 
Funding & Tenders Portal Privacy Statement
Applicants asked the EU 3 questions about this call and the EU published the answers. They clarify the call documents but do not replace them.
Topic HORIZON-CL5-2025-01-Two-Stage-D3-23 focuses on security broadly, including recycling and working conditions. Topic HORIZON-CL5-2026-02-D3-19 centers on distributed IoT and generative AI, with security as a component, not the main focus. Security is crucial for digitalized energy systems, so HORIZON-CL5-2026-02-D3-19 solutions must ensure security in energy systems (only when provided by digital technology).
Read it on the EU portal ↗Answered 30 May 2025
All relevant energy storage technologies for renewable energy are in scope.
Read it on the EU portal ↗Answered 22 May 2025
The scope includes energy networks and/or storage technologies, meaning it is sufficient to address only one of them, but also both can be addressed.
Read it on the EU portal ↗Answered 22 May 2025
Confirm the current call documents and submission conditions with the funding authority.
View on EU portal ↗Source: EU Funding & Tenders Portal · synced 2026-11-09
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