Develops and manufactures LED-based solar simulators (SINUS series) for testing and characterization of solar cells and modules.
WAVELABS Eternal Sun GmbH
Leipzig (DE) · Suzhou (CN, service partner) · Seongnam (KR, service partner) · Zhubei City (TW, service partner) · Singapore (SG, service partner)New on Amplifa
About WAVELABS
WAVELABS Eternal Sun GmbH develops and manufactures LED-based solar simulators (LED flashers) for photovoltaic metrology at its Leipzig site. The devices of the SINUS series are used for I-V measurement and characterization of solar cells, mini-modules and modules in research and development as well as in production lines of solar cell and module manufacturing, including testing of bifacial cells and tandem/multijunction cells. In addition to standard simulators, the company offers customized special solutions as well as the software solution Flashboard for production analysis and machine-learning-based parameter optimization. All devices are manufactured in the 2.700 m² facility at the headquarters in Leipzig (Spinnereistr. 7) and shipped worldwide to most countries; installation and service are provided via global sales and service partners in China, Korea, Taiwan and Southeast Asia. Customers include major PV manufacturers such as Hanwha Q CELLS as well as research and testing institutes such as the Physikalisch-Technische Bundesanstalt (PTB). In 2025, the company was acquired as an asset deal by the Dutch Eternal Sun Group and re-established as WAVELABS Eternal Sun GmbH.
- Site
- Leipzig
- Processes
- LED solar simulator for cell testing (R&D), LED solar simulator for solar cell production lines, Small-format LED solar simulator for R&D, Flexible solar simulator for R&D, Flashboard – production analysis/parameter optimization, Solar simulator for module testing (A+ spectrum, continuous irradiation), Mini-module tester for R&D (wafer-based and thin-film technologies, in particular perovskites), Tailor-made special solutions according to customer specifications
- Materials
- Silicon (Si), Perovskite, Silicon wafers, LED technology
- Founded
- 2011
- Industries
- Photovoltaics (solar energy), Solar cell and module manufacturing, Research and testing institutes, Certification and metrology
- 01
Engineering and product development
- 02
Software development (Flashboard, data analysis, machine learning)
- 03
Manufacturing at the Leipzig headquarters
- 04
Worldwide sales and shipping
- 05
Installation and service via global service partners
Technologies and Applications
Silicon (Si)
Testing and analysis of silicon solar cells and wafers, including PERC and TOPCon technologies, incl. PL imaging for material quality analysis.
Perovskite
Thin-film perovskite photovoltaics, covered by the mini-module tester SINUS-1000 ADVANCED for scalable technologies.
LED technology
Patented LED technology replaces xenon lamps with a stable, flexible spectrum and longer service life.
Locations
Leipzig
DEHeadquarters: development, production and sales
- Materials
- Silicon, perovskite (tested materials)
- SINUS-220
- SINUS-360 ADVANCED
- SINUS-360 PRO
- SINUS-70 ADVANCED
- SINUS-230 LIGHT
- SINUS-3000
- SINUS-1000 ADVANCED
- Flashboard
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| LED solar simulator for cell testing (R&D)Testing | – | – | – | – | Silicon solar cells, Perovskite (thin film) |
| LED solar simulator for solar cell production linesTesting | – | – | – | – | Silicon solar cells |
| Small-format LED solar simulator for R&DTesting | – | – | – | – | Silicon solar cells |
| Flexible solar simulator for R&DTesting | – | – | – | – | Silicon solar cells |
| Flashboard – production analysis/parameter optimizationTesting | – | – | – | – | Silicon solar cells |
| Solar simulator for module testing (A+ spectrum, continuous irradiation)Testing | – | – | – | – | Solar modules |
| Mini-module tester for R&D (wafer-based and thin-film technologies, in particular perovskites)Testing | – | – | – | – | Silicon wafers, Perovskite thin film |
| Tailor-made special solutions according to customer specificationsEngineering | – | – | – | – | – |
| Testing of bifacial (double-sided) solar cells and modules – continuous, fast and precise inTesting | – | – | – | – | Silicon solar cells, Solar modules |
| PL imaging (photoluminescence imaging) for silicon material quality analysisTesting | – | – | – | – | Photovoltaic silicon, Silicon wafers |
| I-V measurement of tandem/multijunction solar cells with spectrum tuning and stabilizationTesting | – | – | – | – | Tandem solar cells, Multijunction solar cells |
| Machine learning for optimization of mass-produced silicon solar cellsEngineering | – | – | – | – | Silicon solar cells |
| Analysis of PERC and TOPCon solar cells in mass production using machine learningEngineering | – | – | – | – | Silicon solar cells |
| Prediction of solar module performance from cell and module parameters using machineEngineering | – | – | – | – | Solar modules, Silicon solar cells |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| LED solar simulator | WAVELABS SINUS-360 ADVANCED | – | – | – | – |
| LED solar simulator | WAVELABS SINUS-360 PRO | – | – | – | – |
| LED solar simulator (small-scale) | WAVELABS SINUS-70 ADVANCED | – | – | – | – |
| Solar simulator (flexible) | WAVELABS SINUS-230 LIGHT | – | – | – | – |
| Flashboard (production analysis) | WAVELABS Flashboard | – | – | – | – |
| Solar simulator for modules (A+ spectrum, continuous irradiation) | WAVELABS SINUS-3000 | – | – | – | – |
| Mini-module tester | WAVELABS SINUS-1000 ADVANCED | – | – | – | – |
| LED solar simulator (LED flasher) | WAVELABS SINUS-220 | – | – | – | – |
| LED solar simulator (historical) | WAVELABS SINUS-220 | – | – | – | Leipzig, Germany |
| LED solar simulator for bifacial testing (ZIM cooperation project) | WAVELABS | – | – | 2022 | – |
Additional services
Reference customers
History
- 2011
Founding (September/October 2011) by Torsten Brammer, Jörn Suthues and Thankmar Wagner; started with the SINUS-220 LED flasher in a garage.
- 2013
First sale of the SINUS-220 to Hanwha Q CELLS; establishment of the new company headquarters (Markranstädter Str. 1, Leipzig-Plagwitz).
- 2015
Award at futureSAX.
- 2018
WAVELABS becomes sales and service partner of BT Imaging in Europe.
- 2021
10th company anniversary; approx. 30% of all solar cell simulations worldwide performed with WAVELABS devices.
- 2022
Award as ZIM cooperation project 2022 for the development of a novel solar simulator for bifacial cells/modules.
- 2024
Carsten W. Hense becomes Managing Director/CEO on May 1 and a member of the board of the VDMA specialist department for photovoltaic production equipment.
- 2025
Eternal Sun (The Hague) acquires the substantial assets of WAVELABS Solar Metrology Systems GmbH (asset deal); newly founded WAVELABS Eternal Sun GmbH in Leipzig.
- 2025
Market launch of the mini-module tester SINUS-1000 ADVANCED for perovskite PV.
- 2026
Eternal Sun Group appoints Fokko van der Zee as CEO (successor to Florian van Rijn van Alkemade).