Estimate your solar output in Liège from local irradiance (1050 kWh/m²/year) and compare quotes from certified installers. Free, no obligation.
Any surplus you do not consume is fed into the grid, according to the scheme in force in your region.
A well-developed local electricity grid that facilitates connection and surplus injection.
Specific subsidies and incentives for your area to significantly reduce your initial investment.
At federal level there is no income-tax deduction for solar panels. The only tax lever is the 6% VAT rate on work invoiced by a contractor for a dwelling over ten years old.
Photovoltaics is explicitly excluded from Walloon Habitation grants. It can still be financed through a zero-interest loan (Renopack / Renoprêt) via the SWCS or the Fonds du Logement de Wallonie.