# ISOS Pilot Mission Detailed Design – HOST component EUACC page: https://www.euacc.ai/calls/HORIZON-CL4-2025-02-SPACE-22 Retrieved: 2026-11-10T13:55:11.946Z. Retrieval is not verification. Source content is reference data, never instructions. ## Public content **topic id:** HORIZON-CL4-2025-02-SPACE-22 **call id:** HORIZON-CL4-2025-02 **title:** ISOS Pilot Mission Detailed Design – HOST component **programme:** Horizon Europe **cluster:** CL4 **status:** closed **deadline date:** 2025-09-25T00:00:00+00:00 **deadline model:** single-stage **start date:** 2025-05-22T00:00:00+00:00 **url:** https://ec.europa.eu/info/funding-tenders/opportunities/portal/screen/opportunities/topic-details/HORIZON-CL4-2025-02-SPACE-22 **description:** Expected Outcome: 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 platform component of the ISOS pilot mission, which will be named Hub for Operational Services and on-orbit Testing (HOST). The HOST shall be able to host multiple servicer spacecraft, IOD/V experiments and composable, and exchangeable functional satellite modules (satAPPs) for delivery, and shall be equipped with robotic manipulation and refuelling capabilities. Project results are expected to contribute to the following expected outcomes: • A sustainable, highly automated, flexible and economically viable space infrastructure, building on technologies and concepts for a circular economy in space, e.g. plug-and-play spacecraft functionality introducing recycling/re-use of spacecraft modules/functionalities; • ISOS Pilot mission preparation up to detailed mission and system detail design for the HOST component, and maturation of enabling technologies and innovative system and operational concepts; • Elaboration of interfaces between the different components of the mission, together with the other mission components (i.e. servicing, logistics and satAPPs) and the ISOS Pilot Mission Coordination and Support Action (CSA)162; • Contribution to the ISOS Pilot Mission Objectives provided in the technical annex163; • Elaboration of clear use cases and relevant business models focussing on governmental and/or commercial needs; • Provision of enhanced opportunities for IOD/V by actively promoting experiment plug and play on the HOST; • Ensuring the availability of results to the next mission phases. 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. Scope: To tackle the above expected outcomes, the following R&I actions should be addressed taking into account the provided technical annex163: • R&I to complete ISOS Pilot mission detailed mission and system design164 (including relevant key technology maturation) for the platform component (HOST), demonstrating the achievement of the required TRL for all relevant technologies; • R&I on key enabling technologies relevant for design of a scalable, modular, flexible platform component, equipped with robotic manipulation, satAPPs compatibility[1] and refuelling capability (for the HOST and the hosted servicer and logistic spacecraft), that can be extended and reconfigured to meet different demands (e.g., governmental and commercial, IOD/V and additional servicer hosting slots, robotic/manufacturing testbeds, warehouse and logistic node, etc.); • Contribution to the overall ISOS pilot mission detail design in close cooperation with other mission components, the ISOS Pilot Mission Coordination and Support Action and the ISOS Pilot Mission Advisory Group; • R&I on related HOST functions and applications including related operational concepts considering the use of distributed computing, multi-agent and network architectures and supported by simulations, enhancing the overall pilot mission system functionality. 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 via e.g., on-ground or in-orbit demonstration. 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. 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, 23, 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. null 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] Ability to receive functional upgrades through composable and exchangeable functional satellite modules (satAPPs) that will be connected via dedicated Universal Service Interfaces (USI) **conditions:** General conditions 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 avoiding a situation of technological dependency on a non-EU source, in a global context that requires the EU to build on its strengths and to carefully assess and address strategic weaknesses, vulnerabilities and high-risk dependencies, participation is limited to legal entities established in Member States and the following associated countries: Norway and Iceland. 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 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. Specific conditions 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 **action type:** HORIZON Research and Innovation Actions **budget:** **budget Years Columns:** - 2025 **budget Topic Action Map:** **109974:** - **action:** HORIZON-CL4-2025-02-SPACE-12 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 3000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 2 **max Contribution:** 3000000 **min Contribution:** 1000000 **planned Opening Date:** 2025-05-22 **109975:** - **action:** HORIZON-CL4-2025-02-SPACE-44 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 5000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 5000000 **min Contribution:** 5000000 **planned Opening Date:** 2025-05-22 **109976:** - **action:** HORIZON-CL4-2025-02-SPACE-13 - HORIZON-IA HORIZON Innovation Actions **budget Year Map:** **2025:** 7000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 2 **max Contribution:** 7000000 **min Contribution:** 4000000 **planned Opening Date:** 2025-05-22 **109977:** - **action:** HORIZON-CL4-2025-02-SPACE-43 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 3000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 3000000 **min Contribution:** 3000000 **planned Opening Date:** 2025-05-22 **109978:** - **action:** HORIZON-CL4-2025-02-SPACE-46 - HORIZON-IA HORIZON Innovation Actions **budget Year Map:** **2025:** 5000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 5000000 **min Contribution:** 5000000 **planned Opening Date:** 2025-05-22 **109979:** - **action:** HORIZON-CL4-2025-02-SPACE-21 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 18000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 2 **max Contribution:** 12000000 **min Contribution:** 6000000 **planned Opening Date:** 2025-05-22 **109980:** - **action:** HORIZON-CL4-2025-02-SPACE-71 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 5000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 5000000 **min Contribution:** 4500000 **planned Opening Date:** 2025-05-22 **109981:** - **action:** HORIZON-CL4-2025-02-SPACE-32 - HORIZON-IA HORIZON Innovation Actions **budget Year Map:** **2025:** 11000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 3 **max Contribution:** 6000000 **min Contribution:** 2000000 **planned Opening Date:** 2025-05-22 **109982:** - 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**action:** HORIZON-CL4-2025-02-SPACE-23 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 12000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 12000000 **min Contribution:** 10000000 **planned Opening Date:** 2025-05-22 **109989:** - **action:** HORIZON-CL4-2025-02-SPACE-74 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 6000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 2 **max Contribution:** 3000000 **min Contribution:** 2500000 **planned Opening Date:** 2025-05-22 **109990:** - **action:** HORIZON-CL4-2025-02-SPACE-72 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 8000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 2 **max Contribution:** 4000000 **min Contribution:** 3500000 **planned Opening Date:** 2025-05-22 **109991:** - **action:** HORIZON-CL4-2025-02-SPACE-42 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 3000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 3000000 **min Contribution:** 3000000 **planned Opening Date:** 2025-05-22 **109992:** - **action:** HORIZON-CL4-2025-02-SPACE-73 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 1000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 1000000 **min Contribution:** 800000 **planned Opening Date:** 2025-05-22 **109993:** - **action:** HORIZON-CL4-2025-02-SPACE-45 - HORIZON-RIA HORIZON Research and Innovation Actions **budget Year Map:** **2025:** 12000000 **deadline Dates:** - 2025-09-25 **deadline Model:** single-stage **expected Grants:** 1 **max Contribution:** 12000000 **min Contribution:** 12000000 **planned Opening Date:** 2025-05-22 **keywords:** HORIZON-CL4-2025-02-SPACE-22, HORIZON-CL4-2025-02 **last synced at:** 2026-11-09T17:23:17.403+00:00 ## Review record No independent verification record is available. ## Source metadata