About us

Our company

Endeas has been a part of the PV technology revolution from its early days. We provide testing solutions for PV manufacturers, laboratories and inspection bodies, materials research and universities.


Our Mission

We take the opportunities of solar energy further by boosting the production chain and enabling future-proof, sustainable ways to produce energy.

Our Vision

We improve productivity and increase the value of our customers’ products and services with our innovative PV testing technologies and comprehensive services.

The Keys to Success

The combination of innovative PV testing technologies and broad expertise in PV module manufacturing and testing. 

Better production control and the quality of PV modules thanks to credible and accurate measurements.

Core measurements in one system improves testing efficiency and reliability while saving space and costs.

Our commitment to customer success makes everything easy, fast and dependable.


The first Quicksun simulators were developed and delivered to in-house clients in a national energy company in Finland. In 1995 the simulator was exhibited publicly and immediately a US company ordered one system. This success encouraged for further development and marketing and the system was regularly exhibited in the following PV conferences. By the year 2000 more than 10 QuickSun solar simulators had been delivered and the product started to establish itself in the global market.

In the year 2001 Endeas Oy was founded and it acquired the QuickSun technology and patents. In the same year a proprietary optical device was developed for improving irradiance uniformity. With this option it was possible to construct a compact large area solar simulator with true Class A irradiance uniformity characteristics.

The proprietary QuickSun measurement technology was also applied for the testing of single crystalline silicon cells. A unique option called IDCAM was developed in 2003 and it enabled the evaluation of the physically meaningful equivalent circuit parameters in a production friendly and reliable way.

In 2004 Endeas Oy launched a new product, QuickSun 540LA In-Line Solar Simulator. This product enables the testing of PV modules with face down position. In addition, the testing capacity of this product is high enough in order to comply with the throughput requirements of any PV production line.

The first systems to combine I-V measurement with EL inspection and electrical safety tests were delivered in 2014. In 2017, the first all-in-one testing station, QuickSun 550CE, received certification by TÜV Rheinland as an A+A+A+ solar simulator.

Today, more than 600 QuickSun solar simulators have been delivered around the world. Majority of the simulators are delivered in co-operation with the partners and distributors as listed in the contacts page of this web site. Endeas continues its development work by concentrating on the refined analysis of PV modules.

Endeas Team

Antti Tolvanen

Managing Director


+358 50 564 9066


Jaakko Hyvärinen

Senior Advisor

Jyry Hyvärinen

Sales and Marketing


+358 50 479 9554


Joonas Aumola

Production Manager


Henri Mustonen

Measurement Electronics


Pasi Javanainen



Kalle Lipping

Power Electronics

Jori Palomäki

Mechanical Design


Sergey Mida

Assembly & Testing

Sampo Hyvärinen

Development Engineer

Kerttu Aitola

Research & Development


Olga Sergeeva

Financial Administrator


+358 50 348 3242


Konstantin Chernov

Assembly & Testing

Clients who trust us


If you are interested in working at Endeas, we will be happy to hear from you! Please contact:

Antti Tolvanen
Managing Director, M.Sc.
Tel. +358 50 564 9066

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