Horizon Europe European Union
Neutral-Atom Platform Technologies
This action aims to establish European leadership in neutral-atom quantum simulation and digital quantum computing by delivering: • Fully programmable industry-ready quan…
Horizon Europe · European Union
Demonstration for Long-duration Battery Energy Storage Systems (BATT4EU Partnership)
Opens 5 May 2027
The EU's Horizon Europe programme expects to make 2 awards of €9.4 million each, from a total budget of €18.8 million. Applications close on 15 Sep 2027 (EU calls usually close at 17:00 Brussels time). Organisations in EU member states and Horizon Europe associated countries such as Türkiye can usually take part; the topic conditions control.
- Deadline
- 15 Sep 2027 (in 304 days)
- Opens
- 5 May 2027
- Grant amount
- €9.4 million per project
- Total budget
- €18.8 million
- Funding rate
- 70% for companies, 100% for non-profits Standard rule for this programme; the call can differ.
- Total budget
- €18.8 million
- Expected awards
- 2
- Type of action
- HORIZON Innovation Actions · HORIZON Action Grant Budget-Based
- Likely applicant types
- Companies, SMEs / start-ups, Non-profits, Universities & research, Public bodies From source categories or programme rules; the call decides.
- Funder
- Horizon Europe (HORIZON)
- Reference
- HORIZON-CL5-2027-05-D2-08
- Call
- HORIZON-CL5-2027-05
- Last checked
- 14 Nov 2026
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.
Read the full text
• 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…
Who can apply
Consortium of at least 3 independent legal entities from 3 different EU Member States or associated countries, at least one in a Member State (Horizon Europe standard rule).
Applicant categories are a starting point. The official call decides eligibility.
Timing
Single-stage call. Next deadline 2027-09-15. The portal states the exact cut-off time (EU calls usually close at 17:00 Brussels time).
How to apply
- Read the full topic on the Funding & Tenders Portal: expected outcome, scope, type of action and the topic conditions, including any country restrictions.
- Register each participating organisation in the Funding & Tenders Portal to get a PIC.
- Consortium of at least 3 independent legal entities from 3 different EU Member States or associated countries (Horizon Europe standard rule; Türkiye is associated). Confirm in the topic conditions.
- Prepare Part A (administrative forms and budget, completed in the portal) and Part B (the technical description on the official template for this type of action).
- Submit in the portal before the cut-off time on the deadline day. Late submissions are not accepted.
From the call text
- Who can apply
- Not stated in the call text we hold — check the official page
- Company stage
- Not stated in the call text we hold — check the official page
- Single applicant or consortium
- Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.
- Where applicants must be based
- Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.
- Where to apply
- Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route.
Where these facts come from
| Fact | Value | How we know | Taken from the source |
|---|---|---|---|
| Deadline | 15 September 2027 “Single-stage call. Next deadline 2027-09-15. The portal states the exact cut-off time (EU calls usually close at 17:00 Brussels time).” | official data field | 15 Nov 2026 |
| Amount per applicant | Unknown — not stated in the source we hold | unknown | — |
| Total budget | €18.8 million | official data field | 15 Nov 2026 |
| Funding rate | 70% for companies, 100% for non-profits | programme standard rule | 15 Nov 2026 |
| Who can apply | Consortium of at least 3 independent legal entities from 3 different EU Member States or associated countries, at least one in a Member State (Horizon Europe standard rule). | programme standard rule | 15 Nov 2026 |
| Where to apply | Read the topic conditions on the EU Funding & Tenders Portal for eligible countries, consortium requirements, budget and the application route. | read from the official text | 15 Nov 2026 |
Official sources
Facts on this page come from the funder’s official data, taken on 14 Nov 2026. The funder's own documents, including later amendments, always take precedence.
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