Eternal Sun

Netherlands-based Eternal Sun Group (ESG) is a leading manufacturer of solar simulators and integrated climate chambers for measuring the performance and reliability of solar PV modules. Through its brands Eternal Sun and SPIRE, ESG serves a global customer base of PV module manufacturers, research institutes and test laboratories. Its mission is to contribute to the development and growth of the solar industry by enabling the highest degree of measurement control and certainty by providing high-end solar testing knowledge, technology and services. ESG simulators have renowned capabilities regarding repeatability, reproducibility, spectrum, uniformity, and stability.