Become your own electricity provider has never been easier thanks to the facilities offered by Solar-Tech Engineering!


Our photovoltaic systems are efficient and reliable. They allow you to minimize your carbon footprint while saving you money. A typical photovoltaic system is amortized in less than seven years and produce your electricity for 25 years! Do not hesitate to contact our office for a quote request, technical advice or a question relating to the sale of your green certificates.


The mechanism of green certificates reward the production of green electricity in the Walloon Region. A counter is placed to record the entire power generation of the photovoltaic system.

Thursday, March 28, 2013, the Walloon Government reached an agreement on the photovoltaic folder.

On the basis of this agreement, a new support system (Qualiwatt) different from green certificates mechanism would be set up soon.

Transitional arrangements for the granting of green certificates is also planned for the period between 1 April 2013 and the date of entry into force of the new support system (Qualiwatt). This plan guarantees 1.5 CV / MWh for installations up to 5 kWp and 1 CV / MWh for plants during 10 years.

The green certificates market is liberalized, the producer can sell green certificates to its electricity supplier, or a third party. A list of buyers is available on the website of the CWaPE.

Green certificates are valid for 5 years from the date of grant. You can also, at the time of their issue, sell green certificates to Elia for the amount secured by the Walloon region (65 EURO per green certificate).