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Horizon Europe Cluster 5 — climate, energy and mobility (2027 calls opening in 2026)

Four Horizon Europe Cluster 5 calls (climate, energy, mobility) for 2027, with 30 topics and around €530 million, open between 17 November and 15 December 2026. You apply in European consortia, and the first deadline is 4 March 2027.

Who can apply
Any legal entity can take part
Total budget
Approximately 530 million
Funding amount
Projects receive from around 0.38 million
Submission period
17 November 2026 – 14 April 2027, 17:00 (Brussels time); second stage: 7 October 2027

Checked against official sources on · funder: European Commission · official source

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Horizon Europe Cluster 5: €530 million for climate, energy and transport, opening from 17 November

Who can apply

Any legal entity can take part: energy, battery and transport companies, universities, research institutes and public authorities, as partners or coordinators. The standard rule requires a consortium of at least three independent entities from three different countries. At least one must be from an EU Member State, and the others from other Member States or associated countries. Entities from Romania are eligible for funding. CSA and CoFund actions can also be submitted by a single entity, unless the topic provides otherwise. Entities established in China are not eligible for innovation actions (IA).

What it covers

  • Climate research: extreme events, palaeoclimate, mitigation tools, maladaptation, carbon sources and sinks, transition scenarios, the Africa–EU climate CoFund
  • Battery recycling and the production of lithium-ion and sodium-ion cells (BATT4EU partnership)
  • Next-generation photovoltaics, wave and tidal energy, concentrated solar thermal for industry, renewable fuels (SET Plan CoFund), Renewable Energy Valleys in Africa
  • (Generative) AI tools for the energy system and direct air capture of CO2
  • The circular economy in electric mobility, long-distance zero-emission coaches and buses
  • Megawatt charging for trucks and the prevention of fires in electric vehicles in enclosed spaces
  • Waterborne transport (autonomous vessels, onboard energy, batteries, nuclear propulsion for ships), circular aviation, air quality and noise around airports
  • Next-generation batteries and aircraft noise reduction (the two-stage call)
Full analysis Horizon Europe Cluster 5: €530 million for climate, energy and transport, opening from 17 November Conditions, steps and pitfalls, with official sources →

We prepare your application before the window opens

  1. We analyse whether you qualify and under which programme exactly.
  2. We build the application: business plan, budget, supporting documents.
  3. We submit during the call window and follow the evaluation.
  4. We stay with you through the reimbursement file and final payment.

Frequently asked questions

When can projects be submitted to the 2027 Horizon Europe Cluster 5 calls?

The CLIMATE call (HORIZON-CL5-2027-01) opens on 17 November 2026 and has a deadline of 4 March 2027. The BATTERIES and ENERGY call (2027-02) opens on 3 December 2026 and has a deadline of 31 March 2027. The MOBILITY call (2027-03) opens on 15 December 2026 and has a deadline of 14 April 2027. The two-stage BATTERIES and MOBILITY call (2027-04) also opens on 15 December 2026: the first stage has a deadline of 14 April 2027, and the second 7 October 2027. All deadlines are at 17:00 Brussels time.

What is the budget of the Cluster 5 calls opening at the end of 2026?

Together, the four calls have an indicative budget of around €530 million: €123 million for climate, €222.98 million for batteries and energy, €131 million for mobility and €53 million for the two-stage call on batteries and mobility. The amounts depend on the approval of the EU budget for 2027.

Can a company from Romania apply alone to Cluster 5?

As a rule, no. RIA and IA actions require a consortium of at least three independent entities from three different countries: at least one from an EU Member State, and the others from other Member States or associated countries. Only coordination and support actions (CSA) and CoFund actions can be submitted by a single entity, unless the topic provides otherwise. Entities from Romania are eligible for funding.

What percentage of costs does Horizon Europe fund in Cluster 5?

Research and innovation actions (RIA) and coordination and support actions (CSA) are funded at up to 100%. For innovation actions (IA), companies receive a maximum of 70%, while non-profit entities receive up to 100%. CoFund actions are funded at between 30% and 70%. Indirect costs are added to these, as a flat rate of 25% of eligible direct costs, excluding subcontracting and financial support to third parties.

How much can a Cluster 5 project receive in the 2027 calls?

The indicative EU contribution varies by topic. The lowest is around €0.38 million, for the CSA supporting the SET Plan geothermal groups. The highest is around €43 million, for a single wave and tidal energy project. Many topics offer between €3 million and €10 million per project. Amounts other than the indicative ones may also be requested.

How long does the evaluation of an application submitted to Cluster 5 take?

Unless the topic provides otherwise, the evaluation result arrives about 5 months after the submission deadline, and the grant agreement is signed after about 8 months. For two-stage calls, the first-stage result arrives after about 3 months, and the agreement is signed about 8 months after the second-stage deadline.

How long does it take to prepare the application?

It depends on the complexity of the project and the documents you already have. The first step is the eligibility analysis, which tells you what needs to be prepared.

What happens if I do not qualify?

We tell you before any contract is signed, and if another suitable programme exists, we point you to it.

Next step

We prepare your application before the call opens — Horizon Europe Cluster 5 — climate, energy and mobility (2027 calls opening in 2026)

Fill in the form and we will tell you whether you qualify. If you do not qualify under this programme, we will tell you which other one you could apply for — or that there is none, if that is the case.

or call us directly on 0755 167 167

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