Roof profile · Lorentzweiler
Rue de Helmdange 30
7360 Helmdange
These figures reflect the full roof potential (8.9 kWp, Klimabonus grant deducted, paid back in ~7 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 Helmdange 30: your roof can fit up to ~22 solar panels (~8.9 kWp). We start at the ideal size for a household — move the slider up to aim higher.
Your turnkey project
- Power
- 6.0 kWp · 15 panels
- Estimated output
- 5 723 kWh/year
- Turnkey price (3% VAT)
- ~11 780 €
The government covers ~49% of your system
Your remaining cost
~6 038 €
That's ~801 €/year in savings — paid back in ~8 years.
Over 25 years, you gain
~13 992 €
Cumulative savings minus your remaining cost · 2 289 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
- Very suitable (PV class 2)
- Solar thermal suitability
- Very suitable (ST class 2)
- Ground footprint
- 101 m²
- Estimated usable area
- 45 m²
- Installable power
- 8.9 kWp (~22 panels)
- Estimated output
- 8 489 kWh/year
- Estimated savings (self-consumption ~40 %)
- 1 188 €/year
- Indicative gross investment
- 16 271 €
- Estimated Klimabonus grant
- −7 666 €
- Net investment after grant
- 8 605 €
- Estimated payback (on net)
- ~7 years
- CO₂ avoided
- 3 395 kg/year
- Postal code
- 7360
- Municipality
- Lorentzweiler
- Coordinates (WGS84)
- 49.691562, 6.143922
- Cadastre identifier (HID)
- 190439
Estimate · official solar cadastre (Klima-Agence)