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All calls › Horizon Europe › HORIZON-CL4-2027-SPACE-03-21
ForthcomingHorizon Europe

ISOS4I Pilot Mission Integrated Ground Test and consolidation of space-compatible USI solutions

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…

Deadline 2 Sep 2027Opens 9 Mar 2027Budget €3.9MIndicative grants 1EU contribution per project €3.5M–€3.9MSingle stageHORIZON Research and Innovation Actions

Funding and competition

  • 1grant expected (official)
  • €3.5M–€3.9MEU contribution per project
  • €3Mmedian EU grant of the most similar funded projects
  • 119projects 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.

OrganisationCountryTypeSimilar EU projectsAs coordinatorExamples (CORDIS)
Deutsches Zentrum Fur Luft - Und Raumfahrt Ev
Koln
GermanyResearch organisation203ASTRALIS, EROSS SC, EROSSplus
Thales Alenia Space France Sas
Toulouse
FranceCompany115EROSS SC, EROSSplus, EROSS IOD
Gmv Aerospace And Defence Sa
Tres Cantos
SpainCompany111ASTRALIS, EROSSplus, SCOPE
Sener Aeroespacial Sociedad Anonima
Las Arenas
SpainCompany71ASTRALIS, EROSS SC, EROSS IOD
Space Applications Services Nv
Zaventem
BelgiumCompany · SME93EROSS SC, EROSS IOD, SCHUMANN
Iboss Gmbh
Aachen
GermanyCompany · SME40JANUS, ASTRALIS, smartCASE
D-Orbit Spa
Fino Mornasco Co
ItalyCompany40JANUS, ASTRALIS, SCOPE
Deimos Engineering And Systems Slu
Puertollano
SpainCompany62ASTRALIS, SCOPE, ICARUS
Piap Space Sp Zoo
Warszawa
PolandCompany50ASTRALIS, EROSS SC, EROSSplus
Deutsches Forschungszentrum Fur Kunstliche Intelligenz Gmbh
Kaiserslautern
GermanyResearch organisation62ASTRALIS, EU-RISE, PERIOD
Thales Alenia Space Italia Spa
Roma
ItalyCompany80EROSSplus, SCOPE, EROSS IOD
Kinetik Space Gmbh
Gilching
GermanyCompany · SME30ASTRALIS, EROSS SC, EROSS IOD
Planetek Hellas Monoprosopi Etaireia Periorismenis Efthynis
Kifisia
GreeceCompany · SME31JANUS, SCOPE, ORION
Arianegroup Gmbh
Taufkirchen
GermanyCompany31ASTRALIS, SCHUMANN, SALTO
Airbus Defence And Space Gmbh
Taufkirchen
GermanyCompany52SCOPE, EU-RISE, PERIOD

Spanish organisations with experience in this field

The Spanish organisations that appear most often in the closest funded projects.

OrganisationCountryTypeSimilar EU projectsAs coordinatorExamples (CORDIS)
Gmv Aerospace And Defence Sa
Tres Cantos
SpainCompany111ASTRALIS, EROSSplus, SCOPE
Sener Aeroespacial Sociedad Anonima
Las Arenas
SpainCompany71ASTRALIS, EROSS SC, EROSS IOD
Deimos Engineering And Systems Slu
Puertollano
SpainCompany62ASTRALIS, SCOPE, ICARUS
Ienai Space Sl
Leganes
SpainCompany · SME10smartCASE
Hispasat Sa
Alcobendas Madrid
SpainCompany20SCOPE, EPRIME
Avs Added Value Industrial Engineering Solutions Slu
Elgoibar
SpainCompany · SME20SCOPE, EPRIME
Thales Alenia Space Espana Sa
Tres Cantos
SpainCompany30EROSS IOD, GOTOFLY, ORION
Arribes Enlightment Sl
Madrid
SpainCompany · SME10EROSS SC

What a typical winning consortium looks like

  • 10partners (median)
  • 6countries (median)
  • 31%of partners are SMEs
Company 54%University 20%Research organisation 17%Public body 6%Other 3%

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.

  • JANUS – JANUS (Joint Architecture for Novel, Universal satAPPs): The gateway to SynApps - cognitive, resilient, and autonomous In-Space services (HORIZON · 2026 · HORIZON-CL4-2025-02-SPACE-24)
  • ASTRALIS – Advanced Space Transfer & Resupply Architecture for Logistics in ISOS-environment (HORIZON · 2026 · HORIZON-CL4-2025-02-SPACE-23)
  • smartCASE – smart Configurable Adaptive Spacecraft and Spacecraft Extensions (HORIZON · 2026 · HORIZON-CL4-2025-02-SPACE-24)
  • EROSS SC – European Robotic Orbital Support Services – Servicing Component (HORIZON · 2026 · HORIZON-CL4-2025-02-SPACE-21)
  • EROSSplus – European Robotic Orbital Support Services + (H2020 · 2021 · SPACE-27-TEC-2020)
  • SCOPE – Servicing, Connectivity, On-orbit Propulsion & Engineering (HORIZON · 2026 · HORIZON-CL4-2025-02-SPACE-21)

Live partner requests

Organisations actively looking for partners publish their requests on these official platforms.

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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.