Demonstration for Long-duration Battery Energy Storage Systems (BATT4EU Partnership)
Demonstrate innovative long-duration battery storage systems (>8h) to enhance EU grid stability and reduce critical raw material dependency.
This call funds projects demonstrating advanced long-duration battery energy storage systems lasting over 8 hours. Projects should focus on improving grid stability, resilience, and flexibility in Europe. They must use sustainable, abundant materials and provide operational data for techno-economic analysis.
Likely relevant for
- Battery technology developers
- Energy storage system integrators
- Renewable energy utilities
- Industrial energy consumers
- Research institutions in energy storage
- Companies focusing on sustainable materials
Project signals
What it funds
- System-level demonstrations of innovative long-duration (>8 hours) battery storage technologies
- Technologies not yet commercialized such as novel redox flow, high-temperature, metal-air, multivalent chemistries
- Use cases including grid-scale storage, industrial energy consumers, renewable generation firming
- Hybridization potential with complementary storage technologies
- Use of abundant, low-cost, sustainable materials with European supply chains
- Integration of advanced digital technologies for battery and energy management
- Comprehensive techno-economic and safety assessments
Expected outcomes
- Demonstrated long-duration energy storage solutions enhancing grid stability and flexibility
- Reduced EU dependence on critical raw materials via sustainable materials
- Strategic insights for EU-wide stationary storage deployment
- Operational data supporting techno-economic analyses
- Safety assessments and mitigation strategies for widescale adoption
Who can apply / participate
- Research organisations
- Industry including SMEs and large enterprises
- Consortia of multiple legal entities
- Consortium composition must comply with Horizon Europe rules
- Joint Research Centre (JRC) may participate with zero funding or as associated partner
- Legal entities established in China are not eligible
- Eligible countries as per Horizon Europe Annex B
- Participants must comply with Horizon Europe eligibility and exclusion criteria
- Use of Copernicus and/or Galileo/EGNOS data mandatory if satellite data involved
- Specific consortium size and composition requirements
- Exact funding rates and co-financing conditions
Must check before shortlisting
- Eligibility of participant countries and entities
- Compliance with EU supply chain and sustainability requirements
- Alignment with TRL 6-7 demonstration stage
- Consortium composition and JRC involvement possibilities
Money
Total budget for this call is approximately €18.8 million for 2027, with expected grants of around €9.4 million each for two projects.
- Total budget for 2027 — 18800000EURApproximate total budget for this call in 2027
- Expected number of grants — 2Two grants expected
- Minimum and maximum contribution per grant — 9400000EUREach grant expected to be around €9.4 million
Application notes
- Single-stage submission model with deadline on 15 September 2027.
- Proposal page limits and layout as per Horizon Europe General Annexes
- Eligible countries as per Horizon Europe Annex B
- Use of Copernicus/Galileo data if satellite data involved
- JRC participation possible with zero funding
- Prepare proposal following Horizon Europe application form templates
- Ensure compliance with admissibility and eligibility criteria
- Submit proposal via Funding & Tenders Portal before deadline
- Include exploitation and dissemination plans with scalability and commercialization strategy
- Legal entities established in China are not eligible
- Projects must achieve TRL 6-7 by end of project
- Compliance with Safe and Sustainable by Design framework recommended
Derived from official EU Funding portal source · updated 22 Jun 2026, 15:39 UTC. Use this as a shortlisting aid; the official call text remains authoritative.
Related calls
These funding calls are closely related and may be worth considering as part of the same funding landscape.
Official source text
Fine print from the EU source record. Expand when you need the original wording.
Topic description
Expected Outcome: Projects are expected to contribute to all of the following outcomes: Demonstrated system-level long-duration energy storage (LDES) solutions, explicitly aimed at enhancing grid stability, resilience, and flexibility in Europe. Substantial reduction of Europe's dependence on critical raw materials through the use of abundant, low-cost, and sustainable materials. Contribute to strategic insights for a coherent EU-wide stationary storage deployment strategy, enhancing European energy autonomy and sustainability. Sufficient and reproducible operational data and insights to serve as reliable input towards detailed technoeconomic analyses. Scope: Proposals should focus on system-level demonstrations of innovative long-duration (> 8 hours) battery storage concepts that can effectively support utility-scale energy systems or industrial consumers in achieving energy security and operational sustainability. Projects are expected to cover all the following points: Demonstration of advanced long-duration storage technologies not yet on the market such as novel redox flow batteries (standard or mediated), high-temperature systems, metal-air systems, multivalent chemistries (organic or aqueous), or other non-commercialised technologies or architectures. Assessment and definition of use case(s) intended for the proposed technology (front-of-the-meter grid-scale storage, behind-the-meter large industrial energy consumer, firming of renewable generation) along with quantified impact on improved grid resilience, reduced emissions, safety, and lowered energy storage cost. Assessment of hybridization potential of complementary energy storage technologies (e.g., redox flow batteries with supercapacitors) to optimize overall system performance for the intended use case(s) and extending system lifecycle. Utilization of abundant, low-cost, and sustainable materials, explicitly prioritizing materials with reliable and scalable European supply chains, accompanied by realistic and detailed pathways to production routes at scale. Integration of advanced digital technologies, for accurate state-of-charge (SOC), state-of-health (SOH), and lifetime predictions, optimizing battery management systems (BMS), energy management systems (EMS), and overall component performance for extended system longevity. Comprehensive techno-economic analyses, including realistic assessments of CAPEX, OPEX, based on measured technical performance metrics (e.g., self-discharge rates, calendar life, cycle life, round-trip efficiency, necessary safety investments) to clearly establish economic viability and competitiveness for the intended use-case in comparison to the commercial, incumbent technology. Comprehensive safety assessment at system-level, documenting potential concerns (e.g. flammability, toxicity, explosion potential) and mitigation strategies ahead of widescale adoption of technology. The Commission initiative for Safe and Sustainable by Design [1] (SSbD) sets a framework for assessing the safety and sustainability of chemicals and materials which should be considered as a reference for project proposals. Whenever the expected exploitation of project results entails developing, creating, manufacturing and marketing a product or process, or in creating and providing a service, the plan for the exploitation and dissemination of results must include a strategy for such exploitation. The exploitation plans are expected to include preliminary plans for scalability, commercialisation, and deployment (feasibility study, business plan) indicating the possible funding sources to be potentially used (in particular the Innovation Fund). Proposals could consider the involvement of the European Commission's Joint Research Centre (JRC) [2] whose contribution could consist of performing experimental or desk-top research on battery performance or safety. For further information on the JRC’s possible contribution to the projects, please, search for additional publicly available information on the JRC’s website [3] (EU Science Hub) on the NCP portal, or request specific information from the JRC (JRC-NCP-Network@ec.europa.eu) JRC will assure that all the other applicants receive the same information on the JRC’s possible contribution to the project (e.g., via the topic-specific FAQs under the Funding and Tenders Portal). This topic implements the co-programmed European Partnership on Batteries (Batt4EU). As such, projects resulting from this topic will be expected to report on the results to the European Partnership on Batteries (Batt4EU) in support of the monitoring of its KPIs. null Activities are expected to achieve TRL 6-7 by the end of the project – see General Annex B. Activities may start at any TRL. [1] https://research-and-innovation.ec.europa.eu/research-area/industrial-research-and-innovation/key-enabling-technologies/chemicals-and-advanced-materials_en [2] https://joint-research-centre.ec.europa.eu/laboratories-z/battery-energy-storage-testing_en [3] JRC NCP | Horizon Europe NCP Portal
Destination
This Destination contributes directly to the Strategic Plan’s Key Strategic Orientations ‘ Green 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 “Facilitating a clean and sustainable transition of the energy and transport sectors towards climate neutrality through cross-cutting solutions ”. The main impacts to be generated by topics under this Destination are: Batteries Increased competitiveness and strategic autonomy of a complete EU value chain while maximizing sustainability. Reducing dependency on raw materials and upscaling processing capacity, also for recycled materials. Creating an integrated European battery sector for next generation batteries , from design to manufacturing and all the way to end of life, reducing environmental impact. Improving energy storage technologies to enhance the resilience of EU’s energy system, facilitating integration of renewable energy sources. Legal entities established in China are not eligible to participate in both Research and Innovation Actions (RIAs) and Innovation Actions (IAs) falling under this destination. For additional information please see “Restrictions on the participation of legal entities established in China” found in General Annex B of the General Annexes.
Conditions and documents
General conditions
1. Admissibility Conditions: Proposal page limit and layout
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).
The Joint Research Centre (JRC) may participate as member of the consortium selected for funding as a beneficiary with zero funding, or as an associated partner. The JRC will not participate in the preparation and submission of the proposal - see General Annex B.
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
The granting authority may, up to 4 years after the end of the action, object to a transfer of ownership or to the exclusive licensing of results, as set out in the specific provision of Annex 5.
described in Annex G of the Work Programme General Annexes.
Specific conditions
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)
Evaluation form templates — will be used with the necessary adaptations
Standard evaluation form (HE RIA, IA)
Guidance
Model Grant Agreements (MGA)
Additional documents:
HE Main Work Programme 2026-2027 – 1. General Introduction
HE Main Work Programme 2026-2027 – 8. Climate, Energy and Mobility
HE Main Work Programme 2026-2027 – 15. General Annexes
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
Support information
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.
Raw budget overview
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