Eternal Sun

Eternal Sun, which has now merged into the Endeas group, established itself as a key player in the solar energy quality assurance sector. The company was founded in 2011 by Chokri Mousaoui, Stefan Roest, and Floris van den Brink, all of whom have backgrounds connected to the Delft University of Technology. Their journey began with a focus on addressing the critical need for reliable solar panel testing, a vision that stemmed from their technical expertise and understanding of the burgeoning solar industry's challenges.

The core of the business revolves around the manufacturing and supply of high-precision solar simulators. These systems are designed to replicate sunlight with exceptional accuracy, enabling clients to conduct rigorous testing on photovoltaic (PV) modules. The primary clientele includes some of the world's largest solar panel manufacturers and prominent research and development laboratories that require certainty about the quality, performance, and longevity of their products. By providing these critical tools, Eternal Sun helps ensure that solar panels meet stringent international standards and performance claims before reaching the market.

In addition to equipment sales, the company diversified its revenue streams by offering PV testing services at its own laboratory facilities. This service-oriented approach caters to clients who may not have the capacity or need to purchase a full simulator but still require expert, independent testing. This dual business model of equipment sales and service provision allows the company to serve a broader segment of the solar market, from manufacturing giants to smaller R&D outfits.

A significant milestone in the company's history was its merger with Spire Solar and a subsequent rebranding to Endeas. This strategic consolidation broadened the company's product portfolio and market reach, combining Eternal Sun's expertise in steady-state solar simulation with Spire Solar's leadership in pulsed solar simulators. This union created a more comprehensive provider of solar testing solutions, solidifying its position within the global renewable energy infrastructure.

Keywords: solar simulation, photovoltaic testing, quality assurance, solar panel manufacturing, renewable energy equipment, R&D labs, PV module certification, solar energy services, Endeas, test equipment