About us
We make sunlight
Our mission: Moving the solar industry forward by enabling the highest degree of measurement control & certainty through high-end solar testing advice, technology and services.
Our Team
Jeffrey Zou
Project Manager China
Electronics Engineer
Company History
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1980
- Solar Simulator bussiness unit of Spire Solar Corp. is established
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2011
- Eternal Sun is founded as a spin-off from Delft University of Technology in the Netherlands
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2014
- We introduce the AAA+ class steady-state solar simulator
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2015
- Our AAA steady-state simulator wins the first prize of PV magazine’s technology highlight awards
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2016
- Eternal Sun acquires the solar simulator division of Spire Solar Corporation.
- Develops the Climatic Chamber Solar Simulator and wins the first prize at PV magazine awards, technology highlights 2016
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2017
- Eternal Sun & Spire Solar introduce the AAA High Performance Light Soaker for advanced LeTID studies
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2018
- OdinSpire, a joint venture of Eternal Sun Spire and Odin Warehousing, starts local PV testing services in Rotterdam Harbor
- We set up a sales and service office in Shanghai to be closer to our customers
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2019
- Introducing the A+A+A+ Single Long Pulse Temperature Control Lab Flasher
- ABN AMRO Energy Transition Fund joins as new majority shareholder
- Eternal Sun & Spire Solar change the name to Eternalsun Spire combining the broad experience and innovative environment of both brands
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2025
- Eternal Sun welcomes Bolster Investment Partners as a new majority shareholder to push growth, technology development and further professionalization
- We acquired German company WAVELABS and formed a new subsidiary, WAVELABS Eternal Sun GmbH, based in Leipzig
Today
Do you want to learn more? Contact us!
Eternalsun Spire is a leading manufacturer of solar simulators for measuring the performance of PV modules.