Introduction
The transition to cleaner energy is a priority in Belgium. Good news: if you install photovoltaic panels, a domestic battery or an energy management system, you can benefit from a number of grants and subsidies, depending on your region.
Here’s a clear summary of the aid available in Wallonia, Flanders and Brussels in 2025.
Various aids
Solar installation grants in Wallonia
Green certificates
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For installations connected before the end of 2023, some still benefit from green certificates.
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For new installations, this assistance is withdrawn, but you are exempt from the prosumer fee for 5 years if you install a two-way meter.
Communal bonuses (variable)
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Some Walloon municipalities still offer local bonuses.
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The amount and conditions vary, so contact your local authority.
6% reduced VAT
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If your building is over 10 years old, VAT on panels is reduced to 6% instead of 21%.
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Solar incentives in Brussels (Bruxelles-Capitale)
RENOLUTION 2025 premiums
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Substantial grants of up to €1,500 for solar installations.
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The amount depends on household income, installed surface area and building location.
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For batteries, the bonus can reach an additional €1,000.
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Please note: the subsidy ceiling is limited each year → you need to apply quickly.
Also 6% VAT
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Same rule as for Wallonia: applicable to homes over 10 years old.
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In Flanders: special scheme with the “premie Mijn VerbouwPremie”.
More green certificates
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From 2021, there will be no more green certificates for new installations.
Premium for domestic batteries (2025)
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Up to €850 bonus, decreasing according to installed capacity.
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You need to install a digital meter.
