Eternal Sun, based in The Hague, develops and produces test equipment for the most prominent solar panel producers, R&D laboratories and independent metrology institutes in more than 60 countries. With its know-how and innovative strength, Eternal Sun is the global expert in the field of solar simulators. Eternal Sun’s high-quality test equipment is crucial for the quality control, pricing and R&D of solar panels. In this way, Eternal Sun makes a significant contribution to technological developments and value creation in the solar energy sector. In addition to test equipment, Eternal Sun also offers import tests and factory inspections for major solar panel importers and project developers.
The company excels through its expertise in flash simulators and steady-state simulators, which measure the maximum energy output of a solar panel, the first by means of a flash of light and the second through long exposure to light. With a strong focus on innovation and customization, Eternal Sun responds to technological developments and changing test requirements. Eternal Sun is active worldwide from six locations in four countries.
"Bolster sluit voor ons perfect aan bij de volgende fase voor ons bedrijf. Een investeerder die gespecialiseerd is in het laten groeien van mid-size bedrijven."Florian van Rijn van Alkemade - CEO
We approach every investment with close attention to the business and the people leading it. We identify where opportunities emerge and act when the timing is right. In this way, we work as equal partners towards sustainable growth.
Our approach
In this series, Dutch novelist Ronald Giphart tells the stories behind Bolster’s portfolio companies. About entrepreneurship, the choices that were made, and what it means to partner with an investor.
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