Eternalsun Spire

Eternalsun Spire is a leading manufacturer of solar simulators for measuring the performance and reliability of PV modules.

We help our customers to achieve 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 PERC, IBC, HJT, Perovskite, CdTe and are fully capable of handling of bifacial, half-cut cell, shingled and large modules.

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.

Company History:

1980: Solar Simulator bussiness unit of Spire Solar Corp. is established

2011: Eternal Sun is founded as a spin-off from Delft University of Technology in the Netherlands

2014: We introduce the AAA+ class steady-state solar simulator

2015: Our AAA steady-state simulator wins the first prize of PV magazine’s technology highlight awards

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

2017: Eternal Sun & Spire Solar introduce the AAA High Performance Light Soaker for advanced LeTID studies

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

2019-Today: 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