Closed

Optimised/Alternative Silicon Growth Technologies (from either liquid or gaseous phase) for PV Applications (EUPI-PV Partnership)

HORIZON Innovation Actions

Basic Information

Identifier
HORIZON-CL5-2025-02-D3-09
Programme
Cluster 5 Call 02-2025 (WP 2025)
Programme Period
2021 - 2027
Status
Closed (31094503)
Opening Date
May 6, 2025
Deadline
September 3, 2025
Deadline Model
single-stage
Budget
€5,000,000
Min Grant Amount
€5,000,000
Max Grant Amount
€5,000,000
Expected Number of Grants
1
Keywords
HORIZON-CL5-2025-02-D3-09HORIZON-CL5-2025-02

Description

Expected Outcome:

The majority of commercially available photovoltaic (PV) solar cells produced worldwide are made of crystalline silicon. Material quality, process technologies, and solar cell architectures have improved significantly in recent decades, and solar cell efficiencies are now approaching 27%, thus close to the theoretical limit. However, challenges remain in several aspects, such as increasing the production yield, stability, reliability, cost, and sustainability.

The ingot and wafering production steps are power intensive and produce recyclable waste in the form of kerf slurry – the residue ingot material from between the sliced wafers. These production steps are highly concentrated in China.

Project results are expected to contribute to all of the following expected outcomes:

  • A European economic base which is stronger, more resilient, competitive, and fit for the green and digital transitions, by reducing environmental impact and strategic dependencies for critical raw materials and components;
  • Scaling-up solar PV manufacturing capacity in Europe for an accelerated solar PV deployment, supporting Europe’s decarbonisation targets;
  • Reduced energy and material consumption and lower carbon and environmental footprint for crystalline silicon PV products along their lifecycle;
  • The execution of the solar energy joint research and innovation agenda[1].
Scope:

Due to their efficiency and durability, crystalline silicon wafers are by far the most common absorber material used in the production of solar cells and modules today. These wafers are primarily made using either a directional solidification that produces large-grained multi-crystalline (mc-Si) wafers with a greater defect density (and therefore almost out of production) or a solar-optimised Czochralski (Cz) growing method that produces crystalline silicon with low defect density (c-Si). In addition, “kerfless” silicon wafers can be grown directly either from molten silicon or from gaseous epitaxial deposition on a low-cost substrate at high temperature. To facilitate continued and rapid proliferation of Si photovoltaics, realizing new, more efficient and less energy and material intensive processes for silicon feedstock, ingots and wafers is sought. Therefore, proposals are expected to address at least one of the following challenges:

  • Demonstrate alternative, efficient, and scalable (towards gigawatt capacity) processes or methods and equipment to grow silicon ingots and wafers from either liquid or gaseous phase at lower cost (with lower energy and material requirements) and high-quality compared to standard processes and possibly avoid the wafering step;
  • Optimise standard processes and equipment for defect, impurities and structure loss minimisation, high-quality ingots with large diameters (for larger wafers) that allow for higher level of automation and kerf recycling and/or use of recycled silicon from waste solar modules and reduced energy use; optimise wafering.

Proposals are expected to involve multidisciplinary consortia including at least one silicon ingot and wafer manufacturer.

Whenever the expected exploitation of project results entails developing, creating, manufacturing and marketing a product or process, or in creating and providing a service, the plan for the exploitation and dissemination of results must include a strategy for such exploitation. The exploitation plan should include preliminary plans for scalability, commercialisation, and deployment (feasibility study, business plan) indicating the possible funding sources to be potentially used (in particular the Innovation Fund).

This topic implements the co-programmed European Partnership for Innovation in Photovoltaics (EUPI-PV). As such, projects resulting from this topic will be expected to report on the results to the European Partnership for Innovation in Photovoltaics (EUPI-PV) in support of the monitoring of its KPIs.

[1] Commission Staff Working Document "Solar energy joint research and innovation agenda with Member States in the context of the European Research Area (ERA)"

Destination & Scope

This Destination includes activities targeting a sustainable, secure and competitive energy supply. In line with the scope of cluster 5, this includes activities in the areas of renewable energy; energy system, grids and storage; as well as Carbon Capture, Utilisation and Storage (CCUS).

This Destination contributes directly to the Strategic Plan’s Key Strategic OrientationsGreen transition’, ‘Digital transition’ and ‘A more resilient, competitive, inclusive and democratic Europe’.

In line with the Strategic Plan, the overall expected impact of this Destination is to contribute to the ‘Ensuring more sustainable, secure and competitive energy supply through solutions for smart energy systems based on renewable energy solutions’.

This destination contributes to the activities of the Strategic Energy Technology Plan (SET Plan) and its implementation working groups.

The main impacts to be generated by topics under this Destination are:

Renewable energy

  1. Energy producers have access to competitive European renewable energy and renewable fuel technologies and deploy them to enhance the EU’s energy security. This will contribute to the 2030 “Fit for 55” targets (in particular, at least 42.5% renewable energy share and aiming for 45% in the EU energy consumption, 5.5% advanced biofuels and renewable fuels of non-biological origin share in EU fuel consumption). It will also contribute to the indicative target of at least 5% innovative renewable energy technology for the newly installed renewable energy capacity. By 2050, climate neutrality in the energy sector will be achieved in a sustainable way in environmental (e.g., biodiversity, multiple uses of land and water, natural resources, pollution) and socioeconomic terms, and in line with the Sustainable Development Goals.
  2. Technology providers have access to European, reliable, sustainable, and affordable value chains of renewable energy and renewable fuel technologies.
  3. Economic sectors benefit from better integration of renewable energy and renewable fuel-based solutions that are among others cost-effective, efficient, flexible, reliable, and sustainable. Such integration is facilitated by digital technologies and by renewable energy technologies that provide network stability and reliability.
  4. European researchers benefit from a stronger community and from a reinforced scientific basis on renewable energy and renewable fuel technologies, also through international collaborations.
  5. European industries benefit from a reinforced export potential of renewable energy and renewable fuel technologies, also through international collaborations.
  6. European industries become frontrunners and maintain technological leadership in innovative renewable energy technologies in line with the energy union strategy.
  7. European citizens, including disadvantaged and vulnerable groups, have access to an energy market that is affordable, fair and equitable, more resilient, uses all different types of local renewable energy resources, and is less dependent on fossil fuels. Local communities benefit from a more decentralised and secure energy system and from multiple uses of land and water. Less citizens experience fuel and energy poverty.
  8. Strategic Energy Technology Plan (SET Plan) implementation working groups on solar photovoltaics, solar thermal technologies, renewable fuels and bioenergy, wind energy, geothermal energy, and ocean energy benefit from a reinforced scientific basis and collaboration on renewable energy and renewable fuel technologies towards meeting the ambitious targets of the European Green Deal.

Energy systems, grids & storage

R&I actions will support the just digital and green transformation of the energy system through advanced solutions for accelerating the energy systems integration and decarbonisation. The developed clean, sustainable solutions will contribute to making the energy system and supply more reliable, resilient, and secure. The solutions will contribute to increase flexibility and grid hosting capacity for renewables through optimising cross sector integration and grid scale storage. They will enhance the competitiveness of the European value chain, reduce pressure on resources (also by making technologies ‘circular by design’) and decrease dependencies.

Innovative and cost-effective energy storage (integration) solutions are developed, that provide flexibility to the energy system, reduce total cost of grid operation and enhancement and that minimise the use of critical raw materials and ensure, to the best extent possible, their reuse and recycling, are key elements of the energy system.

Carbon capture, use and storage (CCUS) and carbon dioxide removal (CDR)

  1. Accelerated development of carbon capture, use and storage (CCUS) as a CO2 emission mitigation option in electricity generation, in industry applications and carbon dioxide removal technologies (including conversion of CO2 to energy products).
  2. Reduced EU’s dependency on imported fossil fuels and increased energy security, reduced energy system’s vulnerability to the impacts of the changing climate.

Eligibility & Conditions

General conditions

1. Admissibility Conditions: Proposal page limit and layout

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

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

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

Eligible costs will take the form of a lump sum as defined in the Decision of 7 July 2021 authorising the use of lump sum contributions under the Horizon Europe Programme – the Framework Programme for Research and Innovation (2021-2027) – and in actions under the Research and Training Programme of the European Atomic Energy Community (2021-2025). [[This decision is available on the Funding and Tenders Portal, in the reference documents section for Horizon Europe, under ‘Simplified costs decisions’ or through this link: https://ec.europa.eu/info/funding-tenders/opportunities/docs/2021-2027/horizon/guidance/ls-decision_he_en.pdf]].

described in Annex G of the Work Programme General Annexes.

Specific conditions

described in the [specific topic of the Work Programme]

Support & Resources

Online Manual is your guide on the procedures from proposal submission to managing your grant.

Horizon Europe Programme Guide contains the detailed guidance to the structure, budget and political priorities of Horizon Europe.

Funding & Tenders Portal FAQ – find the answers to most frequently asked questions on submission of proposals, evaluation and grant management.

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IT Helpdesk – contact the Funding & Tenders Portal IT helpdesk for questions such as forgotten passwords, access rights and roles, technical aspects of submission of proposals, etc.

European IPR Helpdesk assists you on intellectual property issues.

CEN-CENELEC Research Helpdesk and ETSI Research Helpdesk – the European Standards Organisations advise you how to tackle standardisation in your project proposal.

The European Charter for Researchers and the Code of Conduct for their recruitment – consult the general principles and requirements specifying the roles, responsibilities and entitlements of researchers, employers and funders of researchers.

Partner Search help you find a partner organisation for your proposal.

Latest Updates

Last Changed: September 5, 2025

PROPOSAL NUMBERS  

Call HORIZON-CL5-2025-02 has closed on the 03/09/2025 (17:00). 

233 proposals have been submitted. 

The breakdown per topic is: 

  • HORIZON-CL5-2025-02-D2-03 (IA): 16 proposals 
  • HORIZON-CL5-2025-02-D2-06 (CSA): 1 proposal 
  • HORIZON-CL5-2025-02-D2-08 (RIA): 38 proposals 
  • HORIZON-CL5-2025-02-D2-10 (COFUND): 1 proposal 
  • HORIZON-CL5-2025-02-D2-11 (CSA): 20 proposals 
  • HORIZON-CL5-2025-02-D2-12 (CSA): 0 proposals 
  • HORIZON-CL5-2025-02-D3-03 (IA): 17 proposals 
  • HORIZON-CL5-2025-02-D3-04 (RIA): 19 proposals 
  • HORIZON-CL5-2025-02-D3-06 (IA): 23 proposals 
  • HORIZON-CL5-2025-02-D3-09 (IA): 2 proposals 
  • HORIZON-CL5-2025-02-D3-11 (IA): 18 proposals 
  • HORIZON-CL5-2025-02-D3-15 (CSA): 12 proposals 
  • HORIZON-CL5-2025-02-D3-16 (CSA): 2 proposals 
  • HORIZON-CL5-2025-02-D3-17 (IA): 7 proposals 
  • HORIZON-CL5-2025-02-D3-21 (IA): 12 proposals 
  • HORIZON-CL5-2025-02-D3-25 (RIA): 14 proposals 
  • HORIZON-CL5-2025-02-D3-26 (RIA): 1 proposal 
  • HORIZON-CL5-2025-02-D3-27 (IA): 30 proposals 

 

 Evaluation results are expected to be communicated in December 2025. 



Last Changed: September 2, 2025

Please note that the deadline of all 18 topics under call HORIZON-CL5-2025-02 has been postponed from 02 September 2025 to 03 September 2025 - 17:00:00 Brussels local time.

Last Changed: May 9, 2025
The submission session is now available for: HORIZON-CL5-2025-02-D3-09, HORIZON-CL5-2025-02-D3-26, HORIZON-CL5-2025-02-D2-11, HORIZON-CL5-2025-02-D3-15, HORIZON-CL5-2025-02-D3-11, HORIZON-CL5-2025-02-D3-17, HORIZON-CL5-2025-02-D3-25, HORIZON-CL5-2025-02-D2-12, HORIZON-CL5-2025-02-D3-16, HORIZON-CL5-2025-02-D2-10, HORIZON-CL5-2025-02-D3-04, HORIZON-CL5-2025-02-D2-03, HORIZON-CL5-2025-02-D3-21, HORIZON-CL5-2025-02-D3-27, HORIZON-CL5-2025-02-D3-03, HORIZON-CL5-2025-02-D3-06, HORIZON-CL5-2025-02-D2-08, HORIZON-CL5-2025-02-D2-06
Optimised/Alternative Silicon Growth Technologies (from either liquid or gaseous phase) for PV Applications (EUPI-PV Partnership) | Grantalist