Fraunhofer ISE to support HoloSolis’ new 5GW PV production plant in France

September 1, 2023
Facebook
Twitter
LinkedIn
Reddit
Email
The back-end production laboratory of Fraunhofer ISE’s Photovoltaic Technology Evaluation Center. Image: Dirk Mahler / Fraunhofer ISE.

French startup HoloSolis has signed a strategic collaboration agreement with German research organisation Fraunhofer ISE to support setup of its PV production line in France.

Founded by innovation group EIT InnoEnergy, real estate company IDEC Group – which specialises in the rooftop market – and French solar developer TSE, Holosolis plans to build a production line for solar cells and modules, with an annual capacity of 5GW, once at full capacity.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The collaboration aims to build cost-effective and efficient PV modules in Europe, based on tunnel oxide passivated contact (TOPCon) solar cells.

Fraunhofer ISE will support the startup in selecting the technology and planning the factory at the concept design and construction phases.

“HoloSolis’ approach of building a PV production line from solar cells to PV modules while further developing the technology convinced us from the beginning,” said Dr Jochen Rentsch, head of technology transfer at Fraunhofer ISE. “We are very happy to be able to accompany the young company on its way to become a major European-based producer of PV components.”

Located near the French-German border in Sarreguemines, the plant is expected to start production in 2025. It will ramp up to produce ten million PV modules annually for the residential and commercial markets.

The companies will also cooperate in the research and innovation for sustainable solar cell and module production in Europe.

Since the European Commission unveiled its Green Deal Industrial Plan early this year, many companies across Europe have announced plans to build domestic PV manufacturing as the European Union targets a 30GW annual manufacturing capacity by 2025 across the value chain.

Germany went a step further and is seeking 10GW of annual domestic solar manufacturing capacity. The government expects at least 2GW of this capacity to come from solar module production.

Jan Jacob Boom-Wichers, president and CEO of HoloSolis, said: “The Fraunhofer ISE team has unparalleled expertise in Europe in N-type TOPCon technology because they participated in its invention. The Fraunhofer ISE team has been very committed and motivated from the onset of the project to help us build the most cost effective and highest quality PV gigafactory in Europe.”

Read Next

November 3, 2025
Runergy has reported that its latest n-type TOPCon solar cell has achieved a conversion efficiency of 26.55%.
October 28, 2025
Navigating module procurement in this financial environment will be a key topic of conversation at the PV ModuleTech Europe 2025 event.
Premium
October 14, 2025
Perovskite, tariffs, Section 232 and FEOC were among the key topics discussed at PV CellTech USA this year in San Francisco.
October 14, 2025
German IPP wpd has started construction at its 140.6MW Marcy solar park in the Nièvre department of central France.
October 13, 2025
US solar manufacturer T1 Energy has acquired a minority stake in fellow US-based solar cell producer Talon PV.
October 8, 2025
US solar module prices jumped in Q3 2025 as developers scrambled to meet the 2 September 2025 safe harbour deadline for Investment Tax Credit (ITC) qualification, according to supply chain platform Anza.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
November 12, 2025
10am PST / 1pm EST
Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 10, 2026
Frankfurt, Germany