Solar panels in Wallonia
Regional framework, prosumer tariff, 6% VAT and self-consumption: everything you need to know to invest with confidence in photovoltaics in Wallonia in 2026.
What matters in 2026
Prosumer tariff
The grid fee linked to injection remains a key profitability parameter. We factor it into your calculation, battery included.
Self-consumption
Since the end of the reverse-running meter, the challenge is to consume your own production. A battery and smart control make the difference.
6% VAT
For homes over 10 years old, the installation benefits from a reduced 6% VAT rate — applied directly on your quote.
Our areas in Wallonia
Local teams all across the Walloon region — choose your city for lead times and references close to home.
A local partner, from advice to after-sales
We don’t subcontract your project to passing crews. Advice, installation and maintenance are handled by Belgian technicians, close to home.
- RESCERT-certified installers
- Grants and 6% VAT: we guide you
- Solar, battery and heat pump under one roof
Solar in Wallonia
Are solar panels profitable in Wallonia? +
Yes, despite lower production than in southern Europe. The key is self-consumption: the more of your own electricity you use, the more profitable the investment.
What is the prosumer tariff? +
It is a grid-usage fee for panel owners. It weighs on profitability; we factor it into your simulation, with or without a battery.
Am I entitled to the 6% VAT rate? +
If your home is over 10 years old, the installation benefits from a reduced 6% VAT rate. We apply it directly on the quote.
Do you operate throughout Wallonia? +
Yes, in all 5 Walloon provinces as well as Brussels, with local teams.
Why 2026 is still a good year to invest
The end of the reverse-running meter changed the game, but it didn’t kill the profitability of photovoltaics in Wallonia — it shifted it. The new challenge is no longer to inject, but to consume your own production at the moment it is available.
In practice, a household that shifts its usage (water heater, washing machine, car charging during the day) covers a much larger share of its bill. Combined with a battery or a heat pump, the self-consumption rate easily exceeds 70%.
“The right reflex in 2026: size the installation on your actual consumption, not on the available roof area.”
That is precisely the role of our free study: calculating the power that maximises your self-consumption, factoring in the prosumer tariff and the available support, then handing you a costed plan without jargon.
The Walloon rules in plain terms
| Measure | In plain terms | Impact for you |
|---|---|---|
| Prosumer tariff | Fee for grid usage by producers | To factor into the profitability calculation |
| Dual-flow meter | Measures drawn and injected electricity separately | Rewards self-consumption |
| 6% VAT | Reduced rate for renovation (home over 10 years old) | Applied directly on the quote |
| Self-consumption | Share of the production consumed on site | The main savings lever |
Our 5 Walloon provinces
Your solar project in Wallonia?
Free roof study, profitability calculation under the 2026 Walloon conditions and guidance on grants from start to finish.