Solar panel installation in Woluwe-Saint-Lambert

Our photovoltaic installation services

–  Feasibility study and sizing based on actual consumption

–  Installation of monocrystalline or polycrystalline panels

–  Installation of inverters and micro-inverters

–  Connection to the meter and procedures with the network manager

–  Addition of storage batteries for self-consumption

–  Production monitoring via connected application

VAT and subsidies for photovoltaics in Brussels

The VAT at 6% applies to the installation of solar panels in homes over 10 years old, as with most energy renovation work.

The Renolution grants, which historically supported this type of installation, remain suspended for invoices from 2025 and 2026 following the decision of the Brussels government confirmed in February 2026. The ECORENO credit, relaunched in early 2026 by the Housing Fund at a reduced rate based on household income, remains the financing option to consider for this type of project, whose return on investment is generally favorable even without direct subsidies. The compensation mechanism via the meter remains distinct from regional subsidies and continues to apply according to the rules in force at the time of commissioning.

Why choose Avenir Rénovations for your solar installation?

A sizing based on your actual consumption

We do not sell a maximum panel area, but an installation sized to be profitable within a reasonable timeframe, based on your actual electricity consumption and your upcoming projects.

A compliant and properly connected installation

Fixings adapted to the existing framework, careful sealing around roof penetrations, connections made in compliance with current electrical standards.

Follow-up after commissioning

We remain available after installation for any adjustments to the monitoring system or any questions about the actual production observed, especially during the first months of use when household consumption habits often evolve based on the results observed.

Performance and lifespan of the installation

An east-west oriented roof remains profitable in photovoltaics in most cases with current technologies: production is simply distributed differently throughout the day than with a south-facing orientation, which may even better match a consumption profile spread from morning to evening. Current panels also have a guaranteed lifespan of 25 to 30 years with very gradual and predictable performance degradation; the inverter, more electronically stressed, is generally replaced once during this period, which should be anticipated in the overall budget.

For a standard residential installation, expect one to two days of installation on the roof, excluding the time required to obtain administrative permits from the local network manager.

Procedures, storage and management of surplus

In most cases, a simple declaration is sufficient to install solar panels, except in protected areas or on a property classified as heritage; we check the applicable rules for your roof before starting the project to avoid any administrative blockages during construction.

A storage battery is not essential, but it significantly increases the self-consumption rate by allowing the use of energy produced during the day in the evening; its usefulness mainly depends on the household's consumption profile and the available budget. Depending on the type of meter installed, the surplus produced is either injected into the grid with compensation according to current regulations or stored in a battery for deferred use in the evening: we explain the available options based on your specific configuration during the technical visit.

Take control of your electricity bill

A well-dimensioned installation remains one of the most predictable energy investments in the long term, in Roodebeek as in the rest of Woluwe-Saint-Lambert. The time between ordering and commissioning largely depends on the availability of the network manager and the season: it is best to start early to avoid spring waiting lines.

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