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Highly efficient space solAr ceLL for European non-dependencY

Objective

The space industry is expanding rapidly, with innovative technologies evolving into viable services. Satellite telecommunications now offer global connectivity, improving daily life. While initial focus was on low Earth orbit (LEO) constellations, current strategies integrate both LEO and medium Earth orbit (MEO) systems. For example, the EU’s IRIS² initiative reflects this shift, aiming to deploy 290 multi-orbital satellites for secure internet access. Also further European programmes for Earth Observation, Science, Navigation and Exploration contribute to the growing demand for satellites.

To meet rising market demands and improve satellite deployment efficiency, high-efficiency and flexible solar cells are essential. These enable compact satellite designs, reducing launch mass and cost. Geopolitical uncertainties threaten supply chain stability, making reliance on non-European technologies risky. The HALLEY project addresses this by developing inverted metamorphic (IMM) solar cell technology within Europe, enhancing EU supply chain resilience, reducing dependence on critical raw materials, and strengthening strategic autonomy.

IMM cells offer AM0 efficiencies above 34%, using Umicore’s porous Germanium reusable substrates. Unlike traditional cells, IMM designs use Ge or GaAs as removable templates, resulting in thin, robust layers supported by carriers like Mo or Si. Ultra-thin Ag or Cu layers further improve flexibility and power-to-mass ratios.

Led by Umicore, the consortium includes Fraunhofer ISE, AZUR SPACE, EV Group, INTA, and LUP. HALLEY targets BOL efficiencies over 34% and EOL over 30%. Airbus, Thales and Aerospacelab have endorsed its market relevance. The technology promises improved performance, reduced weight, and adaptability for curved surfaces. By enabling European-based manufacturing and securing key components, HALLEY significantly enhances the EU’s space supply chain and positions Europe for next-generation satellite constellations.

Fields of science (EuroSciVoc)

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Keywords

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Programme(s)

Multi-annual funding programmes that define the EU’s priorities for research and innovation.

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

HORIZON-RIA - HORIZON Research and Innovation Actions

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) HORIZON-CL4-2025-02

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Coordinator

UMICORE SA
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 977 134,25
Address
RUE DU MARAIS 31
1000 Bruxelles / Brussel
Belgium

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Region
Région de Bruxelles-Capitale/Brussels Hoofdstedelijk Gewest Région de Bruxelles-Capitale/ Brussels Hoofdstedelijk Gewest Arr. de Bruxelles-Capitale/Arr. Brussel-Hoofdstad
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Links
Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 977 134,25

Participants (5)

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