Demonstration for Long-duration Battery Energy Storage Systems (BATT4EU Partnership)
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…
Funding and competition
- 2grants expected (official)
- €9.4MEU contribution per project
- €4.9Mmedian EU grant of the most similar funded projects
- 149projects funded in earlier topics of this programme line
Very few grants: expect strong competition. Only proposals well above threshold are funded, so a clearly differentiated idea and a complete consortium are essential.
Success rates vary widely between topics (often from below 5% to above 30%). Ask us for the success-rate history of this topic before you commit to a proposal.
Organisations with a track record in this topic
Organisations that took part in the EU-funded projects most similar to this call (Horizon Europe and Horizon 2020), ranked by how close those projects are to the call, how recent they are and whether the organisation coordinated them. Being listed does not mean an organisation is looking for partners: use the list to target your outreach.
Spanish organisations with experience in this field
The Spanish organisations that appear most often in the closest funded projects.
| Organisation | Country | Type | Similar EU projects | As coordinator | Examples (CORDIS) |
|---|---|---|---|---|---|
| Fundacion Cartif Boecillo | Spain | Research organisation | 4 | 0 | SCO2OP-TES, AVANGUARD, AGISTIN |
| Fundacion Cidetec San Sebastian | Spain | Research organisation | 4 | 2 | ZAS, ATENA+, EPISODE |
| Fundacion IMDEA Energia Mostoles Madrid | Spain | Research organisation | 3 | 0 | MEBATFOL, GUESS-WHy, POLYSTORAGE |
| Centro De Investigaciones Energeticas Medioambientales Y Tecnologicas Madrid | Spain | Research organisation | 3 | 0 | AGISTIN, SOLSTICE, SINNOGENES |
| Fundacion Circe Centro De Investigacion De Recursos Y Consumos Energeticos Zaragoza | Spain | Research organisation | 2 | 0 | SMHYLES, SINNOGENES |
| Fundacion Tekniker Eibar Guipuzcoa | Spain | Research organisation | 2 | 0 | PowerMAX, TEMPEST |
| Centro De Investigacion Cooperativa De Energias Alternativas Fundacion, Cic Energigune Fundazioa Minano Alava | Spain | Research organisation | 2 | 1 | HIGREEW, SUCCESSOR |
| Cuerva Energia Slu Churriana De La Vega | Spain | Company · SME | 2 | 0 | AVANGUARD, i-STENTORE |
What a typical winning consortium looks like
- 15partners (median)
- 7countries (median)
- 22%of partners are SMEs
Based on the 25 funded projects closest to this call. Use it as a benchmark, not a rule: always check the call conditions for the minimum consortium.
Most similar funded projects
Read their CORDIS pages to see the full consortium, results and deliverables.
- ReZilient – Redox-mediated hybrid zinc-air flow batteries for more resilient integrated power systems (HORIZON · 2023 · HORIZON-EIC-2022-PATHFINDERCHALLENGES-01-02)
- SMHYLES – Safe, sustainable and Modular HYbrid systems for Long-duration Energy storage and grid Services (HORIZON · 2024 · HORIZON-CL5-2023-D2-01-05)
- LOLABAT – Long LAsting BATtery (H2020 · 2021 · LC-BAT-8-2020)
- FlowCamp – European Training Network to improve materials for high-performance, low-cost next- generation redox-flow batteries (H2020 · 2017 · MSCA-ITN-2017)
- SCO2OP-TES – sCO2 Operating Pumped Thermal Energy Storage for grid/industry cooperation (HORIZON · 2023 · HORIZON-CL5-2023-D3-01-13)
- PowerMAX – Maximizing Grid Integration and Optimization of Long Duration Energy Storage to synergize Revenue Streams (HORIZON · 2026 · HORIZON-CL5-2025-02-D3-21)
Live partner requests
Organisations actively looking for partners publish their requests on these official platforms.
Partner search on this topic
On the official topic page, open “Partner search announcements” to see organisations that have declared interest in this exact topic, or publish your own (EU Login required).
Open the topic ↗GREENET Partner Tool
Year-round matchmaking platform of the Cluster 5 NCP network (climate, energy, mobility).
Open ↗EU Funding & Tenders Partner Search
Search all organisations registered in the portal by keyword, programme, country and organisation type.
Search organisations ↗Enterprise Europe Network
Europe's largest database of business, technology and R&D cooperation requests. Filter by “Research and development request”.
Browse requests ↗Upcoming info days and brokerage events
Brokerage events are where most consortia are built.
- 10 Nov 2026 · European Research and Innovation Days 2026 (Brussels and online)
- 19 Nov 2026 · Horizon Europe Cluster 5 Info Day: Climate, Energy and Mobility (Charlemagne, Brussels, and online)
- 19 Nov 2026 · Horizon Europe Cluster 5 onsite brokerage event (Charlemagne, Brussels)
- 1 Dec 2026 · Interdisciplinary Pathways towards Green and Resilient Societies (Online)
Publish what you are looking for or what you can offer on the Ullswater partner board. We review each request, publish it on this page and introduce you to suitable partners.
Track-record data: CORDIS open data (European Commission), organisation level only, refreshed weekly. Rankings are calculated automatically by Ullswater Investments from text similarity between the call and funded projects; they are indicative.