Energy Renovation Grants in Wallonia 2026

Wallonia has made energy renovation a top policy priority. Through the RENOLUTION program — a unified framework that replaced the older Habiter Malin and Énergie programmes — the region now offers a streamlined system of grants and loans for both residential and commercial energy improvements.

The goal is ambitious: improve the energy performance of Wallonia's building stock to meet 2050 climate targets. To drive uptake, the region has increased grant amounts, simplified application procedures, and introduced income-based bonus tiers that make renovation more accessible to lower-income households.

For businesses, the renovation grants intersect with sustainability compliance requirements. Companies that improve their building energy performance may also qualify for broader sustainability grants in Belgium, creating a powerful incentive to act now.

This guide covers the main programs available in 2026: RENOLUTION primes, Ecopack loans, and targeted subsidies for heat pumps, insulation, and solar panels. We break down who qualifies, how much you can receive, and how to apply.

RENOLUTION is Wallonia's single entry point for energy renovation support. Launched to replace the fragmented system of separate energy and housing grants, it combines multiple subsidies under one roof with a single application process.

The program covers a wide range of renovation works: roof and wall insulation, floor insulation, high-performance windows, heating system replacement, ventilation systems, and renewable energy installations. Each type of work has its own grant amount, calculated per unit (per square metre, per installation, or per kW of capacity).

Grant amounts vary based on income category. Wallonia divides applicants into four revenue categories (R1 to R4), with R1 (lowest income) receiving the highest grant percentages and R4 (highest income) receiving the base amounts. This progressive structure ensures that renovation remains financially viable for all households.

For commercial properties, grant amounts and eligibility criteria differ. Business applicants should check the specific conditions for non-residential buildings, which may have different caps and requirements. The Wallonia grants page lists the latest business-specific programs.

Heat pumps are among the most generously subsidised technologies under RENOLUTION. Wallonia provides grants for air-to-water, ground-source, and water-to-water heat pump installations that replace fossil fuel heating systems.

The base grant for a heat pump installation ranges from €1,000 to €4,000 depending on the type and capacity. For lower-income households (categories R1 and R2), the grant can increase to €6,000 or more. Combined heat pump and hot water systems may qualify for additional top-ups.

To qualify, the heat pump must be installed by a certified contractor and meet minimum performance requirements (COP ratings). The installation must replace or supplement an existing heating system — new construction projects have different support mechanisms.

Application is through the RENOLUTION online portal. You apply after the installation is complete, with the contractor's invoice and technical specifications as supporting documents. Processing times are typically 2 to 4 months.

Insulation is the foundation of any energy renovation. Wallonia grants cover roof insulation, wall insulation (cavity and external), and floor insulation — each with specific requirements and grant amounts per square metre.

Roof insulation grants range from €6 to €24 per square metre depending on the insulation performance achieved and the applicant's income category. Wall insulation grants are typically higher due to the greater cost involved, ranging from €15 to €50 per square metre for external wall insulation.

Floor insulation grants are more modest but still meaningful, typically €6 to €18 per square metre. The key requirement across all insulation types is meeting minimum thermal resistance (R-value) thresholds, which are specified in the RENOLUTION technical guidelines.

Combining multiple insulation measures in a single renovation project often unlocks bonus amounts. Wallonia encourages comprehensive renovation over piecemeal improvements, and the grant structure reflects this through progressive bonuses for projects that address multiple building elements.

The Ecopack is Wallonia's zero-interest loan programme for energy renovation. It provides loans of up to €60,000 for renovation works, repayable over a period of up to 15 years. For lower-income households (categories R1 and R2), the Rénopack variant offers even more favourable terms.

The Ecopack can be combined with RENOLUTION grants. This means you can receive a grant to cover part of the investment and a zero-interest loan for the remainder — making even large-scale renovations financially manageable.

Solar panel installations in Wallonia benefit from a combination of support mechanisms: the RENOLUTION grant for the installation itself, the Qualiwatt mechanism for feed-in compensation, and potential Ecopack financing for the upfront cost.

The RENOLUTION grant for solar panels is calculated per kWp installed, typically ranging from €200 to €500 per kWp depending on system size and the applicant's income category. Combined with Qualiwatt compensation and reduced energy bills, most residential solar installations achieve payback within 5 to 8 years.

For businesses considering solar installations, the Lucas AI assistant can help identify which combination of programs offers the best financial support for your specific situation.

All RENOLUTION applications are submitted through the online portal managed by the Service Public de Wallonie (SPW). You need a Belgian electronic identity (eID) or itsme account to access the portal.

The application is typically submitted after the works are completed. You need the final invoices, the contractor's certificates, and evidence of the work performed (photos, technical specifications). For some measures, a prior energy audit may be required or recommended.

Key tips to maximise your grants: first, get an energy audit before planning your renovation. This identifies the highest-impact improvements and ensures you invest where it matters most. Second, use certified contractors — uncertified work is not eligible for grants.

Third, consider combining multiple measures in a single application. The progressive bonus structure means that a comprehensive renovation (insulation + heating + renewable energy) yields more total grant money than the same measures applied separately over multiple years.

Finally, keep all documentation meticulously. Invoices must clearly describe the work performed, materials used, and quantities installed. Incomplete or vague invoices are the most common reason for grant application delays.