Solar in Luxembourg City by the numbers
Capital of the Grand Duchy, Luxembourg City concentrates a large share of the country's residential solar projects. The Belair, Limpertsberg, Cessange and Merl neighbourhoods hold most of the detached homes with usable roofs. High property values make the resale uplift from a solar installation particularly attractive here.
- Inhabitants
- 135,000
- Postal codes
- L-1xxx, L-2xxx
- Typical usable roof
- 40–90 m²
- Communal supplement (on top of Klimabonus)
- €500 – €1,500
≈ 5–10 kWp installed
Indicative amount — check directly with the commune before committing.
Why install solar in Luxembourg City in 2026
Luxembourg City is one of the most active communes in the Klimapakt 2.0 programme. Its climate policy includes a substantial communal solar supplement (to confirm at the Bierger-Center) that stacks with the national Klimabonus. Note: listed buildings and protected zones (Old City, Pfaffenthal, Clausen) may need an extra permit before installation.
Specific advantages in Luxembourg City
Pre-financed 2026 Klimabonus
Up to €10,000 deducted from your invoice by the registered installer.
Stackable communal supplement
Your commune can add several hundred euros on top of the national Klimabonus, applied for after commissioning.
Reduced VAT at 3%
Instead of 17%, built into the installer's turnkey quote.
Luxembourg sunshine
≈ 950 kWh/kWp/year for a south-facing roof at 30°, enough to break even in 7–10 years.
Worked example for a home in Luxembourg City
For a typical family home in Luxembourg City with a 6 kWp installation:
- Gross investment: €9,000 – €13,200 (3% VAT included)
- Pre-financed 2026 Klimabonus: −€4,200
- Net out-of-pocket: €4,800 – €9,000
- Estimated annual saving: €700 – €1,200/year
- Payback period: 7 – 10 years for 25 years of warranted production
Klimabonus-registered installers in Luxembourg City
About 35 registered installers operate regularly in Luxembourg City. All are listed in the Ministry of the Economy registry, so all can pre-finance the Klimabonus. We compare the best fits for your roof, consumption and budget — you receive 3 quotes within 48 h, free of charge and with no commitment.
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