Dutch -established PV module Test equipment supplier Eternal Sun today announced that the German company watches has taken over, which also supplies flash test equipment to the solar industry. The acquisition creates a new company, Wavelabs Eternal Sun GmbH, with headquarters in Leipzig, Germany and operates as a 100% subsidiary of Eternal Sun Group. The new owner is planning to continue to serve the two companies under their respective brand names, with eternal sun focused on testing PV modules and wavelabs on cells.
Eternal Sun today announced that it has signed a deal to acquire Wavelabs. Both companies supply test equipment to the PV industry and research community. Wavelabs is usually aimed at LED -driven Flash tests for solar cells, while eternal sun developed larger solar simulators and climate rooms for testing PV modules.
According to Eternal Sun, new company -wavelabs will be established eternal Sun GmbH, founded as part of the structure of the deal, activities will continue on the current Wavelabs site in Leipzig, Germany. This company is a 100% subsidiary of Eternal Sun Group, with head office in The Hague, the Netherlands. Eternal Sun said that the majority of the Wavelabs current 60 employees will be aware of and the site in Leipzig will be maintained and expanded.
The plan is that both companies continue their respective focus areas and under their respective brand names. Both should benefit from sharing knowledge in different projects, as well as future collaborations to ensure test protocols for new technologies, such as Perovskiet-silicon tandem cells, can jointly develop at cell and module level.
“With Wavelabs who join the Eternal Sun family, we can offer our customers an unparalleled range of solutions for testing cells and modules,” said Florian van Rijn van Alkemade, CEO of Eternal Sun. “Both companies share a passion for precision, innovation and service. Together we will shape the future of the quality assurance of the sun and accurate characterization.”
The news follows the announcement of Eternal Sun’s May 2025 of a new majority shareholder in the investment company Bolster, established in the Netherlands. This offered the extra capital for the new acquisition.
Test equipment is an area of solar production where European suppliers have been able to maintain market share, even because many of the industry moved to Asia and was taken over by local suppliers. Although Wavelabs has market share in China, overcapacity and a delay in the factory extensions had influenced the recent outlook of the company. “Together with a new strong investor, Wavelabs can again look at the future with confidence,” says Reinhard Klose, partner at the Flöther & Wissing law firm, who managed the restructuring and investors process.
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