The Zoncoalitie Association

The Zoncoalitie Association is part of the independent platform. Its aim is to stimulate the solar energy market, as well as generate potential customers for its members. Zoncoalitie arranges the SDE ++ subsidy application, the technical feasibility study and provides independent advice on the choice of the exploitation model.

Subsequently, a targeted request is sent to members of the association. These members consist exclusively of solar energy providers. At the moment 24 providers have joined the association. Comparable offers from the members are returned to Zoncoalitie, and the customer can choose the most suitable provider.

Zoncoalitie informs property owners about the various possibilities and advantages of solar power, and only requests quotes from members for roofs that are suitable for installing solar panels. In other words: a win-win situation for both solar power provider and real estate owner!

Our installers

Quality marks

Installers who are members of the Zoncoalitie Association are affiliated with solar power quality labels VCA / EBN and InstallQ (Merger of Sterkin and KvINL). Zonnkeur is also a quality mark that many members meet. In addition, most are members of sector organizations such as Holland Solar and Techniek Nederland. These quality marks with accompanying quality standards and minimum warranty periods on the solar systems supplied offer customers insight into the quality of the solar systems supplied and the underlying electrotechnical design in accordance with Dutch industry standards for electrotechnical systems such as NEN1010, so that they also meet the quality requirements of insurers and financiers.



VCA / EBN is a Dutch industry standard for project managers and installers of installation companies with a focus on the safety, health and environmental activities of the installation work. This compliance is tested by the EBN research bureau by means of regulations and a periodic compliance check.



InstallQ is a merger of KvINL ("Quality for Installations Netherlands") and Sterkin. This Dutch quality mark for installers monitors the quality of the technical (solar) installations supplied. As part of this quality mark, installers guarantee, among other things, that their installations and designs meet all the requirements of the Building Decree.



Zonnekeur installers have demonstrably a lot of experience and have passed the national solar energy installer exam and have passed the practical test. The Zonnouding solar water heater meets all quality standards. Choosing the Solar Approval is therefore choosing certainty for a long, reliable and safe use of solar energy.

Interested in becoming a member of the association?

For solar energy providers interested in membership

Client Support Officer

Iris Overeem

Client Support Officer