Hessel van den Berg

Hessel van den Berg (1970) is technical manager at Zonnefabriek.

He regularly reports on current developments in the world of sustainable energy. Hessel has a talent for translating complex information into crystal-clear blogs.

He obtained his master's degree in physics at the University of Groningen, where he specialized in global energy and environmental issues. Hessel has been working as a technical expert, editor and trainer at Zonnefabriek since 2014. He also works at our partner SMA, where he is responsible for technical calculations of solar power projects, solving technical issues and training solar power professionals in the Benelux. Fun fact: he speaks fluent Chinese.

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Articles of Hessel

30 april 2025

SB 1.5, 2.0 and 2.5

What is the meaning of the LED lights on the Sunny Boy 1.5, 2.0 en 2.5? Find all information here. Questions? Don't hesitate to contact us

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30 april 2025

The RCD for the solar panel system trips

Capacitive leakage currents can sometimes lead to problems with RCDs. Rain on solar panels increases the chance of this happening. We explain how it works.

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30 april 2025

Why is the max power of my inverter less than the peak power of the panels?

Why is the power of my inverter less than the peak power of the panels? Read why this happens and how to deal with it.

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30 april 2025

Removing solar panels temporarily for roof repairs

Sometimes work needs to be done on a roof. If there are panels on it then, they need to be removed for a while to give the roofers access. What do you need to watch out for then?

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Desiree Janssen

Desiree is the marketer at Zonnefabriek. Before moving into marketing, she worked in the sales department and as part of the customer service team. This experience, combined with her background in marketing, enables her to guide people through sometimes complex topics in a clear and accessible way.

Jeroen Hiep

Jeroen is a consultant at Zonnefabriek. In this role, he provides in-home advice on solar panels, charging stations, battery storage systems, and heat pump boilers. In addition to his extensive knowledge of the market and products, Jeroen is also trained to carry out technical inspections in preparation for installations.

David van der Burg

David is the Managing Director and co-founder of Zonnefabriek. His mission is to lower barriers and make sustainable energy accessible to everyone. He regularly writes about developments in the energy market and enjoys sharing his vision for Zonnefabriek.

Geert Scholten

Geert Scholten has been working as a service technician at Zonnefabriek since 2009. He specializes in the installation of solar panels, battery systems, and EV charging stations. Geert is responsible for getting installations back up and running and supporting customers with any questions they may have.