What ISC Konstanz does

ISC Konstanz (International Solar Energy Research Center Konstanz e.V.) is a German non-profit research association founded in 2005 and headquartered in Konstanz, Germany, with 51-100 employees. Its mission is to advance photovoltaic efficiency and reduce solar energy costs by bridging laboratory research and industrial manufacturing. The institute operates as a vertically integrated PV R&D center covering the full chain from cell concepts (TOPCon, IBC/ZEBRA, BiSoN, poly-ZEBRA, tandem) to module fabrication, outdoor measurement, and system-level integration, with a pilot production line, clean room, and—since February 2026—an expanded laboratory complex backed by approximately €8 million in state funding from Baden-Württemberg.

The company's core "products" are intellectual property and know-how rather than physical goods: proprietary silicon solar cell architectures (ZEBRA IBC, BiSoN nPERT bifacial, TOUCAN/TOPCon, poly-ZEBRA) that it develops in-house and transfers to industrial licensees, plus supporting cell and module prototyping, technology transfer services, outdoor measurement, and yield-forecasting (MoBiDiG software). It has completed documented technology transfers to manufacturers in China (SPIC), India (Adani, Celloraa Energy, EMMVEE, Solex Energy), Italy (Megacell, FuturaSun), and Lithuania (valoe), and is supporting 1.2-1.4 GW of partner production capacity for TOPCon and back-contact architectures. Underlying technical capabilities include wet-chemical processing (RENA), sputtering (Von Ardenne), screen printing (ASYS), stringer-based module assembly (Mondragon), a 32-tonne Robert Bürkle laminator for modules up to 1.60 m × 2.40 m, and outdoor test stands using Papendorf Software Engineering equipment.

Revenue is generated through a hybrid model combining technology licensing and royalties, contract R&D, equipment rental and pilot-line access, fee-based workshops (GWPVTech, Module and Material, Energy Systems), and—critically—public funding from the EU (Horizon Europe projects such as LEEMONS, PV ACTION, IP2T), the German federal government (BMWK, BMU), and the Baden-Württemberg state government. Pricing is not publicly disclosed and is quoted per project. The institute serves three primary customer types: solar cell and module manufacturers (its dominant vertical), PV equipment manufacturers (RENA, centrotherm, Von Ardenne, ASYS, Mondragon, Robert Bürkle) collaborating on process integration, and European research institutions (Fraunhofer ISE, ISFH, Helmholtz Zentrum Berlin, CEA-Leti, CSEM, Oxford PV) in jointly funded projects. Distribution is direct, via licensing agreements, bilateral workshops, conference participation (Intersolar Europe), and collaborative research contracts.

Name

ISC Konstanz

Legal name

International Solar Energy Research Center Konstanz, ISC Konstanz e.V.

Website

https://isc-konstanz.de

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

51–100 employees

Short description

ISC Konstanz is a German non-profit PV research institute that develops proprietary silicon solar cell architectures (ZEBRA IBC, BiSoN, TOPCon) and transfers them through licensing, contract R&D, and pilot-line services to solar manufacturers and equipment suppliers worldwide, supported by EU and German public funding.

Ownership category

akta.pro rank

Product category

Photovoltaic Research and Development

NAICS

Other Specialized Design Services (54149), Scientific Research and Development Services (5417), Other Scientific and Technical Consulting Services (54169)

SIC

Misc Industrial & Commercial Machinery & Equipment (3590), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)

Keywords

• Photovoltaic research
• Solar cell technology
• Technology transfer services
• Silicon solar cells
• Clean energy R&D

Headquarters

HQ city

Konstanz

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Research and Development Services: Contract research and development services for industrial partners, including process development, technology qualification, and custom R&D projects funded by industry and public grants
2. Technology Licensing: Licensing of proprietary solar cell technologies (ZEBRA, BiSoN, TOPCon) to manufacturers worldwide, including process know-how transfer and qualification support
3. Equipment Rental and Machine Use: Rental of laboratory equipment and pilot production lines to external researchers and companies for testing and small-scale production
4. Workshops and Training: Educational workshops (GWPVTech, Module and Material, Energy Systems) and training programs for industry professionals
5. Public Funding and Grants: Research projects funded by EU (Horizon Europe), German Federal Ministry (BMWK, BMU), and Baden-Württemberg state government, including PV ACTION, LEEMONS, IP2T, and other projects

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

ISC Konstanz is a non-profit research institute that develops high-efficiency crystalline silicon solar cell technologies (ZEBRA IBC, BiSoN, TOPCon/TuKaN) and transfers them to industrial manufacturers worldwide through licensing, technology transfer services, and contract R&D. It also operates pilot production lines for prototyping and small-series production, provides outdoor measurement and forecasting services, and conducts industry training workshops.

Product overview

ISC Konstanz is a German solar energy research institute offering a comprehensive portfolio of photovoltaic technologies, services, and research capabilities. Core offerings include solar cell technologies (ZEBRA IBC, BiSoN bifacial, TOPCon/TuKaN, PERC, nPERT, MoSoN) with prototyping and small-series production in their laboratories. The institute provides technology transfer services to industrialize their developed technologies, outdoor measurement services for module testing, and forecasting/concept development using proprietary simulation software. System technologies include the TH-E Box energy management system, Agri-PV solutions, and space solar cells. Research infrastructure includes cell and module pilot lines, wet-chemical processing, screen printing, PECVD, and sputtering equipment. The institute also hosts workshops including GWPVTech, Module and Material, and Energy Systems workshops for industry collaboration.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Cell Prototyping and Small Series Production Prototype and small-series production of various solar cell types (Al-BSF, PERC, nPERT/BiSoN, TuKaN, MoSoN, ZEBRA) in laboratory facilities, accommodating customer layout requirements. Targeted at solar manufacturers needing pre-industrial validation.
• Technology Transfer Services Full technology transfer services for ISC Konstanz's developed cell and module technologies, including design, planning, tendering, and on-site process commissioning support. Used by manufacturers adopting ZEBRA, BiSoN, or TOPCon technologies.
• Outdoor Measurement Services Module measurement under real irradiation and environmental conditions using Papendorf Software Engineering GmbH equipment, measuring strings with up to 9 modules, generating performance reports including STC data, energy yield, and degradation analysis.
• Forecasts and Concept Development PV yield forecasts using in-house simulation software MoBiDiG, and creation of innovative overall energy concepts for new residential quarters combining CO2-neutral energy producers and consumers with model-predictive energy management.
• ZEBRA Solar Cell Technology (IBC) Interdigitated Back Contact (IBC) solar cell technology developed at ISC Konstanz, licensed to manufacturers including SPIC (China, 2019) and valoe (Lithuania, 2022). Used in high-efficiency applications including the fully electric passenger vessel MS Mainau on Lake Constance.
• BiSoN Bifacial Solar Module Technology Bifacial solar cell technology that utilizes sunlight from both sides to achieve particularly high energy yields, licensed to manufacturers including Megacell (Italy, 2015) and Adani (India, 2017). Demonstrated in carport installations on Reichenau island.
• TOPCon (TuKaN) Technology Tunnel Oxide Passivated Contact (TOPCon) solar cell technology for high-efficiency n-type solar cells, being transferred to industrial partners including Celloraa Energy in India for a 1.2 GW facility and EMMVEE in India for a 1.4 GW line achieving 25.4% efficiency on M10 wafers.
• TH-E Box Energy Management System Energy management system for powering grid-connected buildings, part of ISC System Technologies portfolio. Targeted at building operators seeking integrated CO2-neutral energy management.
• Agri-PV Systems Agricultural photovoltaics systems combining solar power generation with farming, including AI-supported water management integration developed in the AQUA AD AGRI-PV project. Targeted at farmers and rural land operators.
• Space Solar Cells (ISC-Spacetechnologie) Solar cell technology development for space applications, one of ISC Konstanz's specialized technology areas serving aerospace customers.
• Machine Use and Rental Services Rental and licensing of laboratory equipment and facilities for external researchers and industry partners needing access to pilot production lines and analytical equipment.
• Workshops and Training Programs Educational workshops including GWPVTech (German-Indian PV workshop), Module and Material Workshop, Energy Systems Workshop, and PV ACTION workshop series for industry collaboration and professional training.

Quantifiable outcome

• Cell efficiencies up to 25.4% achieved at partner facilities using ISC-developed processes
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature7 records

Partnerships

Eight partnerships are on record, tiered core.

• EMMVEEcoreStrategic or Co-development Partner · 25 June 2026Process integration and technology transfer support for 1.4 GW TOPCon solar cell production line at Bengaluru facility. Achieved cell efficiencies up to 25.4% on M10 wafers. German equipment suppliers centrotherm, RENA Technologies, and halm provided production line technology with ISC Konstanz support for process integration.
• Celloraa EnergycoreStrategic or Co-development Partner · 3 March 2026Strategic partnership for industrialization of high-efficiency n-type photovoltaic technology. ISC Konstanz serves as technology and qualification partner for 1.2 GW TOPCon solar cell manufacturing facility in Surat, Gujarat, India. Includes extensive knowledge transfer and training activities, with plans to expand to 2.4 GW capacity and develop back-contact (BC) solar cells for future tandem architectures.
• RENA TechnologiescoreTechnology or Integration · 1 November 2025Equipment supplier partner providing wet-chemical processing systems (texturing, single-sided polishing, cleaning) integrated into ISC cell architectures. Collaboration in TOUCAN project for TOPCon technology development and multiple public-funded research projects.
• centrotherm international AGcoreTechnology or Integration · 1 November 2025Equipment supplier partner for high-temperature furnace processes in TOPCon and IBC cell production. Collaboration includes BCl3-based diffusion, in-situ PECVD oxides, and direct-plasma PECVD coatings development. Key partner in TOUCAN project.
• Fraunhofer ISE, ISFH, Helmholtz Zentrum BerlincoreStrategic or Co-development Partner · 1 November 2025Research institute partners in PV ACTION project developing cross-institutional, digitally networked PV pilot line for technology-neutral testing of new cell and module concepts.
• Solex Energy LtdcoreStrategic or Co-development Partner · 30 October 2025Strategic R&D partnership for solar cell manufacturing technology advancement. Collaboration includes setting up a dedicated R&D line in India and launching a new rear-contact solar module with up to 24.6% efficiency. ISC Konstanz provides technological expertise and process development support.
• Oxford PV GmbHcoreStrategic or Co-development Partner · 1 June 2025Partner in IP2T project for industrial perovskite-silicon tandem module production. Focus on developing wet-chemical processes, optimizing cell surface structures, and establishing independent production technology in Germany/EU.
• LEEMONS ConsortiumcoreStrategic or Co-development Partner · 1 November 2024EU Horizon Europe funded research project (Nov 2024 - Oct 2027) investigating carrier multiplication in nanostructured silicon for next-generation solar cells. Consortium includes SEGTON Advanced Technology (France), CEA-Leti (France), ROLTEC (Poland), University of Franche-Comté (France), and CSEM (Switzerland). ISC Konstanz leads work packages on n-type solar cell integration and IBC-ZEBRA technology.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Fraunhofer Institute for Solar Energy Systems ISE: Germany's flagship applied PV research institute. Directly comparable to ISC Konstanz as a publicly funded R&D organization performing silicon solar cell research, module technology, and technology transfer to industrial partners. Co-partner with ISC in the PV ACTION pilot line project.
• Institute for Solar Energy Research Hameln (ISFH): German PV research institute focused on silicon solar cell and module technology, including PERC, TOPCon, and back-contact architectures. Direct peer performing contract R&D for industry and co-partner in PV ACTION with ISC Konstanz.
• CSEM: Swiss applied research center with strong PV R&D activity covering silicon heterojunction, tandem, and module technologies. Direct peer as a publicly funded European PV research institute partnering with ISC Konstanz in LEEMONS and similar consortia.
• CEA-Leti: French micro/nanoelectronics R&D institute with significant PV and tandem solar cell programs. Direct peer performing silicon and tandem cell R&D; co-partner with ISC Konstanz in LEEMONS.
• National Renewable Energy Laboratory (NREL): U.S. Department of Energy national laboratory with the largest publicly funded PV research program in North America, covering silicon, thin-film, and tandem cells. Direct peer as a publicly funded research institute performing advanced solar cell R&D and technology transfer.
• Helmholtz-Zentrum Berlin (HZB): German national research center operating the Berlin PV Competence Center with significant silicon and tandem cell research. Direct peer co-partner in PV ACTION and other consortia with ISC Konstanz.
• TNO / Solliance: Dutch applied research organization with strong PV activities (formerly ECN) covering silicon, tandem, and module integration. Direct peer as a European publicly funded PV R&D organization engaged in technology transfer to industry.

Broad incumbents

• imec: Larger Belgian nanoelectronics and PV research powerhouse with industry partnership programs covering silicon, perovskite-silicon tandem, and module technology. Broader incumbent than ISC Konstanz with substantially larger scale and global industry program reach.
• Meyer Burger Technology: Swiss/German PV equipment manufacturer with proprietary HJT and back-contact cell technology and own module production. Broader incumbent operating at scale across the PV manufacturing value chain where ISC Konstanz also develops and licenses cell technologies.

Emerging players

• Oxford PV: UK/Germany-based commercial perovskite-silicon tandem solar cell company spun out of Oxford University. Comparable overlap with ISC Konstanz in tandem cell R&D — currently a partner (IP2T project) but a potential structural competitor for commercialization of tandem know-how.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/isc-konstanz

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about ISC Konstanz