Prime Energie Wallonie — Wallonian Renovation Grants

Wallonia's energy premiums are income-based: the lower your income, the higher the grant. Four income categories (R1 to R4) determine the multiplier applied to base premium amounts. R1 (lowest income) receives 6x the base amount, while R4 receives 1x. The base amounts vary by work type: 20 EUR/m2 for wall insulation, 15 EUR/m2 for roof insulation, 1,000-4,000 EUR for heating systems. An energy audit (PAE) is required for most premiums and adds a 150 EUR bonus.

Grant Amounts

Base amounts multiplied by income category factor. Example: wall insulation base 20 EUR/m2 x factor 6 (R1) = 120 EUR/m2 for lowest-income households. Heat pump base 3,000 EUR x factor 3 (R2) = 9,000 EUR.

Type: GRANT · Provider: SPW Energie (Walloon Government)

Eligibility Criteria

Property in Wallonia used as housing
Built at least 15-20 years ago depending on measure
Income-based category (R1-R4) determines grant multiplier
Energy audit (PAE) recommended
Works by registered contractor

Frequently Asked Questions

How do income categories work in Wallonia?

Wallonia assigns you to categories R1 (lowest income) through R4 (highest). R1 gets 6x the base premium, R2 gets 3x, R3 gets 2x, R4 gets 1x. Your category is based on fiscal income relative to household size.

Do I need an energy audit in Wallonia?

An energy audit (PAE - Procedure d'Avis Energetique) is required for most premiums and costs around 150 EUR. It's reimbursed as a bonus on top of the work premium. The audit identifies the most impactful renovations for your building.

API Example — Simulate Prime Energie Wallonie

Use the GreenCalc sandbox to calculate eligibility for Prime Energie Wallonie in Belgium:

curl -X POST https://greencalc.io/api/v1/eligibility/simulate \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: gc_sandbox_demo_key" \
  -d '{"country_code": "BE",
    "household": {"annual_income": 25000, "persons": 3, "owner_status": "OWNER_OCCUPIER"},
    "property": {"construction_year": 1985, "property_type": "HOUSE", "surface_area": 100},
    "works": [{"work_type": "ROOF_INSULATION", "estimated_cost": 15000}]
  }'

Other Schemes in Belgium

Renolution Brussels

Subsidies in Other Countries

🇫🇷 France 🇩🇪 Germany 🇮🇹 Italy 🇪🇸 Spain

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Calculate subsidy eligibility for any EU renovation project with a single API call.

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