6 kWp on a house
- Capacity
- 6 kWp
- Investment
- €9,000 – €12,000
- Yield
- approx. 5,400 – 6,300 kWh/yr
- Grant
- up to €8,200
Klimabonus (example)up to €8,200
Klimabonus 2026
Solar PV in Luxembourg: grants, cost and authorised installers
House, apartment block or commercial roof: get quotes from authorised installers and know in advance which grants apply.
191 authorised energy and solar companies listed
Your quote in 3 clicks
Free estimate · No commitment
Step 1 of 4 RGPD
You are… ?
191
Authorised solar companies
10.000 €
Maximum PV grant (residential)
2.250 €
Maximum battery bonus
102
Localities covered
Company count from our directory; PV and battery grant rates per guichet.public.lu. Price and yield ranges are market observations. — Sources: guichet.public.lu
Calculation examplesCalculation example Calculation example Calculation example
Cost and yield by capacity
The values below are calculation examples based on prices and yields observed in Luxembourg. They are not customer projects.
10 kWp with battery
- Capacity
- 10 kWp
- Investment
- €16,000 – €22,000
- Yield
- approx. 9,000 – 10,500 kWh/yr
- Battery
- 10 kWh
Klimabonus (example)up to €11,500
30 kWp on a commercial roof
- Capacity
- 30 kWp
- Investment
- €35,000 – €48,000
- Yield
- approx. 27,000 kWh/yr
- Rate
- tapering to 30 kWp
Grant per scalesee guichet.public.lu
Our promise
Installers authorised in Luxembourg
We only work with companies holding a Luxembourg business permit that genuinely install and maintain systems in your region.
- Detailed quotes within 48 working hours
- Insured companies with statutory guarantees
- Support with the Klimabonus application and grid registration
- A Luxembourg-only network
How it works
Three steps to your own system
You provide the basics, we bring in the right installers.
1
Describe the building
Property type, address, contact details. Two minutes are enough.
2
Receive quotes
Authorised installers propose a design and a price.
3
Compare and decide
Expected yield, warranties and servicing side by side.
What solar grants exist in Luxembourg?
Klimabonus applies a tapering scale: €1,400 per kWp for the first 5 kWp, €1,200 up to 10 kWp, then decreasing rates to 30 kWp. Residential support is capped at €10,000.
A coupled battery receives €150 per installed kilowatt-hour, capped at €2,250.
Official rates are published on guichet.public.lu; we link them so you work with verifiable numbers.
What is the cost per kWp?
Market prices are generally €1,400 to €2,000 per kWp turnkey, including scaffolding and registration. Small systems cost proportionally more.
Roof shape and covering matter: slate, metal or flat roofs need different mounting systems.
Compare module count, module power, inverter type and warranty length, not just the total.
What yield can you expect?
Expect 900 to 1,050 kWh per kWp per year. A 6 kWp system therefore typically produces 5,400 to 6,300 kWh annually.
Financial benefit depends mostly on self-consumption. A heat pump, EV charger or hot water production increases it notably.
Always ask for the forecast assumptions: orientation, tilt, shading and self-consumption.
Also worth reading
Frequently asked questions
Solar PV in Luxembourg: your questions
How much is the solar grant in Luxembourg?
€1,400 per kWp for the first 5 kWp, then a tapering scale, with a €10,000 residential cap. Official rates on guichet.public.lu.
Is a battery subsidised?
Yes: €150 per installed kilowatt-hour, capped at €2,250, when coupled to the PV system.
What is the cost per kWp?
Usually €1,400 to €2,000 turnkey, depending on the roof and components.
What annual yield is realistic?
900 to 1,050 kWh per kWp per year with good orientation.
How long does installation take?
Mounting often takes one to three days, plus grid registration and meter change.
Is the request free?
Yes, free and with no obligation.
Ready to go solar?
Two minutes to describe your project, quotes from authorised installers, no obligation.
- Authorised installers
- Reply within 48h
- All of Luxembourg
- Free and no obligation