In Brussels (1000) and across the 19 municipalities, green certificates are the main driver of a photovoltaic system’s payback. Granted by Brugel based on your production over about ten years, they can be resold and add to your self-consumption savings. Wendows calculates your yield, handles the entire Brugel application and manages the declaration — you fill in no form.
In Brussels, support for photovoltaics does not come through an investment grant but through green certificates : Brugel, the Brussels energy regulator, grants you certificates based on the green electricity your system produces, measured in MWh. The more your roof produces, the more certificates you receive — it is this mechanism that makes solar cost-effective in the capital.
These certificates are resold at a market price, with a buy-back guarantee at a floor price that secures your income. Combined with the reduced 6 % VAT for renovations and with your self-consumption savings, they clearly shorten the return on investment. We cost all of this in the study, then we handle your Brugel application from A to Z and manage the production declaration.
How green certificates work
Granted according to your productionBrugel grants green certificates based on the photovoltaic electricity produced, measured in MWh. A multiplier coefficient applies depending on the system’s power : the smallest roofs are proportionally better supported.
A period of about 10 yearsCertificates are granted over about ten years from commissioning. Throughout this period, each portion of electricity produced generates certificates that you cash in each year.
Resale & buy-back guaranteeYour certificates are resold at a market price, with a buy-back guarantee at a floor price that secures the income. It is this steady flow, combined with self-consumption, that ensures the return on investment.
The green-certificate mechanism applies across the whole Region : we handle Brugel applications in Ixelles, Uccle, Schaerbeek, Woluwe and Anderlecht just as in the centre. For the installation itself, see our solar panels in Brussels — same team, same application follow-up.
UNIQUE photo — green-certificate application & production meter in Brussels (do not reuse)
Brugel applicationhandled & declared for you
Costed yieldbefore any commitment
Incentives & yield
What makes your solar pay off in Brussels
In Brussels, support rests on the green certificates granted by Brugel, combinable with reduced VAT and self-consumption. Here are the three levers we leverage in your yield, with no steps on your part.
Green certificates
Brussels green certificates
Granted by Brugel for about ten years according to your production, with a coefficient linked to the power. Resaleable at a market price with a buy-back guarantee. This is the heart of the Brussels yield — we handle and declare the entire application.
6 %VAT
Reduced VAT for renovations
For a home over 10 years old, VAT drops from 21 % to 6 % on the supply and installation of the panels. Applied directly to your quote, it combines with the green certificates.
Self-consumption
Maximise self-consumption
Beyond green certificates, every kWh you consume yourself is a kWh not bought from the grid. We size the system, and propose an optional battery, to speed up the return on investment.
2026 benchmarks — indicative coefficient, market price and grant period, to be confirmed depending on your Brugel application.
The details of the production assumptions, the yield calculation and the return on investment can be found on our solar panel price & incentives page. We handle the entire green-certificate application with Brugel : you fill in no form.
Projects in Brussels
Brussels installations and their green-certificate yield
A few recent installations in Brussels and its municipalities, with the green-certificate application handled and declared by us with Brugel.
UNIQUE photo — Quartier Européen project, green-certificate application (do not reuse)
Quartier Européen
Flat roof, 7.4 kWp — full Brugel application
Installation of 18 panels on ballasted frames. Estimated production cashed in as green certificates over about ten years ; Brugel application handled for the co-owner and annual declaration taken care of.
Voir le chantier →
UNIQUE photo — Pentagon project, yield calculation (do not reuse)
Pentagone
Townhouse, 5 kWp — validated yield
12 full black panels on the rear slope. The yield calculation including green certificates and 6 % VAT showed a return on investment within a few years, validated before installation.
Voir le chantier →
UNIQUE photo — Uccle project, self-consumption + certificates (do not reuse)
Uccle
Detached house, 8 kWp + battery
Green certificates combined with self-consumption raised to over 70 % thanks to the battery. Certificate income and bill savings costed together in the study for the family.
Voir le chantier →
Customer reviews
They chose wendows
5.0/5 · 1verified reviews
« Devis clair, sans surprise, primes comprises. Un seul interlocuteur du début à la fin. Je recommande sans hésiter pour le photovoltaïque. »
The more your system produces, the more green certificates it generates. Panels, inverter and storage together optimise your production and your yield :
In Brussels, Brugel — the Brussels energy regulator — grants you green certificates based on the photovoltaic electricity you produce, measured in MWh. A multiplier coefficient applies depending on the system’s power, with the smallest roofs proportionally better supported. These certificates can be resold and form the main income that makes your project pay off. We handle the entire application and manage the declaration with Brugel.
How much do green certificates earn? +
The income depends on your annual production (so on the power and orientation), the coefficient applied and the resale price on the market. A buy-back guarantee at a floor price secures this income. Our study calculates precisely, for your roof, the number of certificates expected each year and the total yield over the grant period, combined with the 6 % VAT and self-consumption.
For how long do you receive green certificates? +
Green certificates are granted over about ten years from the commissioning of the system. Throughout this period, each portion of electricity produced generates certificates that you cash in each year. It is this duration that, combined with self-consumption, ensures the return on investment.
Who buys back the green certificates and at what price? +
Green certificates are resold at a market price, with a buy-back guarantee at a floor price that protects your income if the market falls. You do not have to find a buyer yourself : we guide you on resale and, above all, we handle and declare the application with Brugel so that your certificates are properly granted to you.
Do green certificates combine with the 6 % VAT? +
Yes. For a home over 10 years old, VAT drops from 21 % to 6 % on the supply and installation, directly on your quote, and this combination is perfectly compatible with green certificates. Add the self-consumption savings and you get the three levers that make solar pay off in Brussels — we cost them together in the study.
Your yield in Brussels
Calculate your green certificates in Brussels, free study within 48h
Tell us your address and your project : a Brussels-based team calls you back, costs the yield of your green certificates and handles your Brugel application from A to Z.
Green-certificate yield costed, with no obligation Brugel application handled and declared for you Green certificates + 6 % VAT + self-consumption combined