Roof profile · Differdange
Rue de la Montagne 69
4630 Differdange
These figures reflect the full roof potential (4.1 kWp, Klimabonus grant deducted, paid back in ~9 years). You don't have to equip the entire roof: set the size that suits you in the simulator below — from the most affordable entry (~3 482 €) to the full potential.
Actual roof irradiation · solar cadastre (aerial view + heatmap)
Calculator · Klimabonus 2026
Size your system
We start at the ideal size for a household. Drag to aim higher — the government grant and your remaining cost recalculate live.
Rue de la Montagne 69: your roof can fit up to ~10 solar panels (~4.1 kWp). We start at the ideal size for a household — move the slider up to aim higher.
Your turnkey project
- Power
- 4.0 kWp · 10 panels
- Estimated output
- 3 575 kWh/year
- Turnkey price (3% VAT)
- ~8 720 €
The government covers ~47% of your system
Your remaining cost
~4 628 €
That's ~500 €/year in savings — paid back in ~9 years.
Over 25 years, you gain
~7 883 €
Cumulative savings minus your remaining cost · 1 430 kg CO₂ avoided/year.
Indicative estimate (official Klimabonus scale + LU market prices). Amounts to be confirmed by quote and via the Klima-Agence calculator.
Roof data
Characteristics from Luxembourg's official solar cadastre.
- Photovoltaic suitability
- Suitable (PV class 1)
- Solar thermal suitability
- Suitable (ST class 1)
- Ground footprint
- 46 m²
- Estimated usable area
- 21 m²
- Installable power
- 4.1 kWp (~10 panels)
- Estimated output
- 3 664 kWh/year
- Estimated savings (self-consumption ~40 %)
- 513 €/year
- Indicative gross investment
- 8 829 €
- Estimated Klimabonus grant
- −4 181 €
- Net investment after grant
- 4 648 €
- Estimated payback (on net)
- ~9 years
- CO₂ avoided
- 1 466 kg/year
- Postal code
- 4630
- Municipality
- Differdange
- Coordinates (WGS84)
- 49.521144, 5.883825
- Cadastre identifier (HID)
- 73799
Estimate · official solar cadastre (Klima-Agence)