We make sunlight! Solar simulators for PV module testing
We enable solar labs and PV manufacturers to accurately measure the performance and reliability of all PV module technologies and sizes.
We help our customers achieving the highest degree of measurement certainty and getting the highest return from their solar investments
Our test setups address the specific needs of technologies like BSF, PERC, IBC, HJT, CIGS, CdTe and are fully capable of handling of bifacial, half-cut cell, shingled and large modules.


Applications for our products
Accurate and repeatable power measurements
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Eternalsun Spire is a leading manufacturer of solar simulators for measuring the performance and reliability of PV modules.