Incentives and regulations
Everything you need to know about financial incentives for your solar panel installation in Belgium (< 10 kVA)
Solar energy incentives vary by region in Belgium. On this page, we summarise what still exists, what no longer applies, and the available financing options.
Also check out our guide on the administrative procedures related to your installation.
In Wallonia
There are no longer any subsidies for installing solar panels or batteries in Wallonia. Since the end of the net metering system (the compensation mechanism), the Walloon Region considers that solar installations are sufficiently accessible and profitable without direct subsidies.
No subsidy, but a 0% interest loan
The Walloon Rénoprêt
You can finance your solar installation with a 0% interest loan, subject to certain conditions. An ideal solution to reduce your electricity bill without increasing your monthly expenses.
Installations before 2024
Prosumer tariff
If your installation was certified before 1 January 2024, you are subject to the prosumer tariff:
Flat-rate (capacity-based)
Calculated based on the capacity of your installation and an assumed self-consumption rate of 37.76%.
Actual (proportional)
For installations with a smart meter, this precisely calculates what you draw from and what you feed back into the grid.
Good news for new installations
Since 2024, the prosumer tariff no longer applies to new solar installations.
In Flanders
In Flanders, there are no longer any subsidies for installing solar panels on existing homes. For several years, the Flemish government strongly supported solar panel installations. Today, authorities consider the market sufficiently mature and profitable without direct subsidies.
However, certain mechanisms still exist to improve the profitability of a solar installation.
A digital meter and feed-in compensation
In Flanders, new solar installations operate with a digital meter. Unlike the old net metering system, your electricity is now measured separately:
- the electricity you consume from the grid
- the electricity you feed back into the grid
The electricity fed back can be sold to your energy supplier, helping to reduce your bill.
The feed-in tariff
Energy suppliers offer a feed-in tariff for the electricity you send back to the grid. This rate varies between suppliers and contracts, but it allows you to monetise the energy you don't consume directly.
Tip: maximise your self-consumption
The higher your self-consumption, the more profitable your installation. An EMS (Energy Management System) helps you intelligently manage the energy produced and maximise the use of your own electricity — since the feed-in tariff is generally lower than the price of purchased electricity.
In Brussels
In Brussels, solar panel installations still benefit from a green certificate system, making it one of the most advantageous regions in Belgium for investing in solar energy.
This mechanism provides direct compensation for the electricity produced by your installation.
Green certificates
For every kWh of electricity produced by your solar installation in Brussels, you receive green certificates for 10 years from the date your installation is certified. These certificates can then be sold to an energy supplier, providing you with additional income.
The number of certificates awarded depends on the installation's capacity, electricity production, and the rules in effect at the time of certification.
Installation ≤ 5 kWp
2.055 green certificates per MWh produced (from April 2026)
Installation between 5 and 36 kWp
1.739 green certificates per MWh produced (from April 2026)
Guaranteed compensation
Green certificates benefit from a guaranteed minimum resale price of €65, ensuring a stable source of income for 10 years and significantly reducing the payback period.
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