Energy renovation ROI in Luxembourg
Average ROI for a full renovation (class G to B) is 6-12 years excluding property appreciation.
Average renovation costs by component
Roof insulation: EUR 120-220/m2, facade: EUR 150-280/m2, triple glazing: EUR 600-1,200/window, heat pump: EUR 12,000-18,000, VMC: EUR 5,000-10,000.
Klimabonus 2026: amounts and conditions
Insulation EUR 30-60/m2, heat pump EUR 2,500-8,000, PV EUR 200-500/kWp, energy audit 50-70% subsidy.
Payback period: worked examples
Full renovation (G to B) for 150m2 house: EUR 75,000 cost, EUR 22,000 aids, EUR 6,000/year savings = 8-9 year payback. With green premium, under 5 years.
Frequently asked questions about energy renovation
How much does a full energy renovation cost?
EUR 60,000-80,000 before aids for a 150m2 house going from G to B.
What is the average payback period?
6-12 years excluding property appreciation. Under 5 years including green premium.
Do aids cover the full cost?
No, Klimabonus covers about 25-40%, municipal aids can bring it to 40-50%.
Should I get an energy audit first?
Strongly recommended. It identifies priority works and is 50-70% subsidised via Myenergy.