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This round is closed. The next round and similar open calls are listed below. Synced from the EU Funding & Tenders Portal on 9 November 2026.
This call is closed. These open or upcoming calls fund the closest work.
Projects the EU funded under this call, with the organisation that led each one.
ASTRALISAdvanced Space Transfer & Resupply Architecture for Logistics in ISOS-environment
Led by Arianegroup GmbH · Germany · 2026 · Official record ↗
Based on projects the EU funded on the same subject in this programme.
COP-PILOTCollaborative Open Platform for PILOTing services across energing smart IoT and Edge computing environments
HORIZON-CL4-2024-DATA-01-03 · 2025 · Official record ↗
EROSS SCEuropean Robotic Orbital Support Services – Servicing Component
HORIZON-CL4-2025-02-SPACE-21 · 2026 · Official record ↗
M2DESCOComputational Multi-Models Enabled Design of Safe & Sustainable Multi-Component High-Entropy Coatings
HORIZON-CL4-2023-RESILIENCE-01-23 · 2024 · Official record ↗
CIRCULessUpCycling mIneral and timbeR-based waste from Construction & manUfacturing process industries through eco-design, advanced logistics, quality control and digital solutions
HORIZON-CL4-2023-TWIN-TRANSITION-01-42 · 2024 · Official record ↗
CLMS-CitiesCopernicus responding to EU Cities Mission
HORIZON-CL4-2024-SPACE-01-35 · 2025 · Official record ↗
MADE-3DMulti-Material Design using 3D Printing
HORIZON-CL4-2022-RESILIENCE-01-12 · 2023 · Official record ↗
MYRTUSMulti-layer 360° dYnamic orchestration and interopeRable design environmenT for compute-continUum Systems
HORIZON-CL4-2023-DATA-01-04 · 2024 · Official record ↗
METASATMODULAR MODEL-BASED DESIGN AND TESTING FOR APPLICATIONS IN SATELLITES
HORIZON-CL4-2021-SPACE-01-12 · 2023 · Official record ↗
Each one links to its EU funding record and the partners it works with: a starting list for building a consortium.
The strategic objective of this topic is to develop capabilities to ‘Act in Space’ through demonstrating in space a pilot mission by 2030 related to ISOS. The envisaged ISOS pilot mission shall provide the necessary seed components for a future service infrastructure, available to the European in-space ecosystem (including the EU assets), driving the generation of a new in-space economy, providing enhanced in-orbit technology demonstration and maximising EU technology non-dependence.
This pilot mission will largely contribute to ensure EU’s freedom of action in space, increase the resilience and protection of EU assets in space and foster the development of the new in-space economy. A pioneering and a novel mission concept, which is unique compared to other initiatives among all space-faring nations is envisaged. The mission will build on previous R&I with an operational mission concept, focusing on application and service demonstration, with a concrete view to commercial and governmental usage. The detailed mission concept will be derived in close coordination with EU Member States and EEA countries through a dedicated ISOS Pilot Mission Advisory Group (PMAG)161.
This topic addresses the detailed design of the logistics component of the ISOS pilot mission. This component shall be able to transport cargo (i.e., satAPPs and propellant) taken from an upper stage to the HOST component.
Project results are expected to contribute to the following expected outcomes:
This topic will contribute to, in the medium to long term, developing, deploying global space-based services and contribute to fostering the European space sector competitiveness, as stated in the expected impact of this destination.
To tackle the above expected outcomes, the following R&I actions should be addressed, taking into account the provided technical annex163:
Proposals are expected to promote cooperation between different actors (industry, SMEs and research institutions) and consider opportunities to quickly turn technological innovation into commercial use in space.
Proposals should clearly present a concrete plan to ensure that required technologies reach the necessary TRL at the end of the project. Moreover, complementarities with previous and/or ongoing R&I for the proposed servicing component must be clearly described. More specifically, proposals should explore relevant and promising solutions developed in Horizon Europe, Horizon 2020, or other EU-funded relevant activities, in particular, the topics: Future Space Ecosystem (HORIZON-CL4-2021-SPACE-01-12/ 2022-SPACE-01-11/ 2023-SPACE-01-12) and in relevant projects funded by the European Space Agency (ESA) and/or national programmes. Finally, proposals are also expected to consider the use of existing European technologies and/or building blocks, including at component level, contributing to European non-dependence and strengthen competitiveness.
Proposals are expected to consider and contribute to a balanced provision of Member States’ and eligible Associated Countries’ expertise and capabilities to the overall ISOS pilot mission, to support a successful introduction of the strategic capacity ‘Act in Space’ for the EU and its Member States.
This topic contributes to the Strategic Technologies for Europe Platform (STEP[1]) and addresses Space technologies falling under the sectors of “digital technologies” and “deep tech innovation”[2]. This topic addresses objectives stated in the STEP Regulation, e.g., the development of critical technologies and safeguarding and strengthening their EU value chain. This topic will contribute to advancing digital capabilities in space and enhance the sustainability and agility of the EU's space assets.
In this topic, the integration of the gender dimension (sex and gender analysis) in research and innovation content should be addressed only if relevant in relation to the objectives of the research effort.
The project selected from this topic is expected to collaborate with those selected under topics HORIZON-CL4-2025-02-SPACE-21, 22, 24 and ISOS Pilot Mission Coordination and Support Action, in order to ensure interoperability and the necessary and sufficient documentation and information sharing for the implementation of the Pilot Mission, to make economies of scale in sharing best practices, defining common processes for addressing the different challenges, ensuring efficient monitoring and review, organising dissemination and communication activities, etc. Such collaboration among all those projects will be formalised by a collaboration agreement.
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Activities are expected to achieve TRL 6 by the end of the project. The reference TRL definition is the ISO 16290:2013 applicable to the space sector.
[1] OJ L, 2024/795, 29.2.2024, ELI: http://data.europa.eu/eli/reg/2024/795/oj
[2] C(2024) 3148 final
1. Admissibility Conditions: Proposal page limit and layout
The page limit of the application is 60 pages.
described in Annex A and Annex E of the Horizon Europe Work Programme General Annexes.
Proposal page limits and layout: described in Part B of the Application Form available in the Submission System.
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
In order to achieve the expected outcomes, and safeguard the Union’s strategic assets, interests, autonomy, or security, namely it is important to avoid a situation of technological dependency on a non-EU source, in a global context that requires the EU to take action to build on its strengths, and to carefully assess and address any strategic weaknesses, vulnerabilities and high-risk dependencies which put at risk the attainment of its ambitions, participation is limited to legal entities established in Member States, Norway, Iceland, Canada, New Zealand, Switzerland, and the United Kingdom. Proposals including entities established in countries outside the scope specified in the call/topic/action will be ineligible.
For the duly justified and exceptional reasons listed in the paragraph above, in order to guarantee the protection of the strategic interests of the Union and its Member States, entities established in an eligible country listed above, but which are directly or indirectly controlled by a non-eligible country or by a non-eligible country entity, may not participate in the action unless it can be demonstrated, by means of guarantees positively assessed by their eligible country of establishment, that their participation to the action would not negatively impact the Union’s strategic assets, interests, autonomy, or security.[[The guarantees shall in particular substantiate that, for the purpose of the action, measures are in place to ensure that: a) control over the applicant legal entity is not exercised in a manner that retrains or restricts its ability to carry out the action and to deliver results, that imposes restrictions concerning its infrastructure, facilities, assets, resources, intellectual property or know-how needed for the purpose of the action, or that undermines its capabilities and standards necessary to carry out the action; b) access by a non-eligible country or by a non-eligible country entity to sensitive information relating to the action is prevented; and the employees or other persons involved in the action have a national security clearance issued by an eligible country, where appropriate; c) ownership of the intellectual property arising from, and the results of, the action remain within the recipient during and after completion of the action, are not subject to control or restrictions by non-eligible countries or non-eligible country entity, and are not exported outside the eligible countries, nor is access to them from outside the eligible countries granted, without the approval of the eligible country in which the legal entity is established.
]]
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).
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
Eligible proposals submitted under this topic and exceeding all the evaluation thresholds will be awarded a STEP Seal [https://strategic-technologies.europa.eu/about/step-seal_en].
The granting authority can fund a maximum of one project.
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
described in Annex G of the Work Programme General Annexes.
described in the specific topic of the Work Programme.
Some activities resulting from this topic may involve using classified background and/or producing of security sensitive results (EUCI and SEN). Please refer to the related provisions in section B Security — EU classified and sensitive information of the General Annexes.
Guidance Document for the EU ISOS Pilot Mission
The Guidance Document provides detailed information on the objectives, the boundary conditions, and high-level requirements of the envisaged In-Space Operations and Services (ISOS) pilot mission. 
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
HE Programme Guide 
Model Grant Agreements (MGA)
HE MGA 
Declaration of ownership and control 
A compulsory questionnaire on the declaration of ownership and control is to be filled by all project participants as part of the application. All declarations must be assembled by the coordinator and uploaded in a single file in the portal submission system. For additional information on the assessment of ownership and control process and on the guarantees please consult the draft guidance for participation in restricted calls. 
Additional documents:
HE Main Work Programme 2025 – 1. General Introduction
HE Main Work Programme 2025 – 7. Digital, Industry and Space
HE Main Work Programme 2025 – 14. General Annexes
HE Programme Guide
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 
Funding & Tenders Portal Terms and Conditions 
Funding & Tenders Portal Privacy Statement
Applicants asked the EU 2 questions about this call and the EU published the answers. They clarify the call documents but do not replace them.
The text of each requirement that you refer to is not needed to be included, the corresponding ID is sufficient, together with the name of the document in which those requirements are listed. It is clearly important to make the reference so clear that the evaluators can identify the requirements correctly.
Read it on the EU portal ↗Answered 5 Sept 2025
On 21 May 2025, the In-Space Operations and Services (ISOS) Info Event was organised, specifically addressing the ISOS topics included in the Horizon Europe Cluster 4 Work Programme 2025 (topics HORIZON-CL4-2025-02-SPACE-21/-22/-23/-24 and the ISOS Pilot Mission Coordination and Support Action). The event presentation and Q&A document are publicly available via the following links:
Read it on the EU portal ↗Answered 9 Jul 2025
Confirm the current call documents and submission conditions with the funding authority.
View on EU portal ↗Source: EU Funding & Tenders Portal · synced 2026-11-09
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