Demonstration for…, …ZON-CL5-2027-05-D2-08

Demonstration for Long-duration Battery Energy Storage Systems (BATT4EU Partnership)

Announced, not yet open · HORIZON Innovation Actions · HORIZON-CL5-2027-05-D2-08

Next cut-off

15 Sept '27

in 374 days

Per grant

€9.4M

the call's own average

Grants expected

projects that will be funded

Funding rate

70%

the rest is your own money

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.

Trimmed here, the full scope, expected outcomes and award criteria are on the official topic page ↗.

What applying costs you

Item	Estimate	Note
Drafting effort	6–8 weeks	single submission
Partner search	4–8 weeks	runs in parallel, and it is the part that slips
Your own money	€4.0M	30% of project cost, over the project's life
Time to first payment	6–9 months	cut-off → evaluation → grant agreement

Item

Estimate

Note

Drafting effort

6–8 weeks

single submission

Partner search

4–8 weeks

runs in parallel, and it is the part that slips

Your own money

€4.0M

30% of project cost, over the project's life

Time to first payment

6–9 months

cut-off → evaluation → grant agreement

These are Bemzu's estimates from the call's structure (the number of stages and whether a consortium is required) not figures published by the Commission. Only the co-financing share is read from the call itself.

Where these conditions come from

Two kinds of row. Most are the sentence we read the condition from, quoted out of the call itself. Some say plainly that they are not a quotation but the programme's own rule for this type of action, the EU portal publishes a table of contents where the conditions should be, so for a Research and Innovation Action the rate comes from the rulebook rather than from the fiche.

Condition	Quoted from the call, or the rule behind it
Consortium size	Not quoted from this call — Innovation Actions under the Horizon Europe rules are at least three independent legal entities from three different Member States or Associated Countries, at least one established in a Member State.
Funding rate	Not quoted from this call — Innovation Actions under the Horizon Europe rules are funded at 70% of eligible costs for profit-making organisations, and 100% for non-profit legal entities — the rate shown here is the one that applies to a company.
Maturity	null Activities are expected to achieve TRL 6-7 by the end of the project – see General Annex B.

Condition

Quoted from the call, or the rule behind it

Consortium size

Not quoted from this call — Innovation Actions under the Horizon Europe rules are at least three independent legal entities from three different Member States or Associated Countries, at least one established in a Member State.

Funding rate

Not quoted from this call — Innovation Actions under the Horizon Europe rules are funded at 70% of eligible costs for profit-making organisations, and 100% for non-profit legal entities — the rate shown here is the one that applies to a company.

Maturity

null Activities are expected to achieve TRL 6-7 by the end of the project – see General Annex B.

Demonstration for Long-duration Battery Energy Storage Systems (BATT4EU Partnership)

In context of Horizon Europe

What this call funds

What applying costs you

Where these conditions come from

Also open in HE

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