5 kWp without battery
- Capacity
- 5 kWp
- Rate
- €1,400/kWp
- Grant
- up to €7,000
- Battery
- none
Klimabonus (example)up to €7,000
Klimabonus 2026
Solar PV calculator for Luxembourg: estimate your Klimabonus grant
Answer four short questions to see which grants apply to your installation, then receive quotes from authorised installers.
191 authorised energy and solar companies listed
Your quote in 3 clicks
Free estimate · No commitment
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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. — Sources: guichet.public.lu
Calculation examplesCalculation example Calculation example Calculation example
Grants by installed capacity
The figures below are calculation examples based on the official Klimabonus rates. They replace neither a quote nor an administrative decision.
10 kWp with 10 kWh battery
- Capacity
- 10 kWp
- PV grant
- up to €10,000
- Battery
- 10 kWh
- Battery bonus
- €150/kWh
Klimabonus (example)up to €11,500
15 kWp with EV charger
- Capacity
- 15 kWp
- Rate above 10 kWp
- €800/kWp
- Charger
- separate grant
- Battery
- optional
Klimabonus (example)up to €10,000 PV
Our promise
Authorised installers, not anonymous lead brokering
Your request only goes to companies holding a Luxembourg business permit and actually working 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
Calculate, compare, decide
No paperwork upfront: you only provide what the estimate needs.
1
Describe your project
Ownership, installation type, address. Two minutes are enough.
2
Get an estimate
We show which grant items are relevant to your case.
3
Compare quotes
Authorised installers reply with priced offers.
How the Luxembourg solar calculator works
The calculator uses the official Klimabonus rates: €1,400 per kWp for the first 5 kWp, then a tapering scale. Residential PV support is capped at €10,000.
Batteries receive a separate grant of €150 per installed kilowatt-hour, capped at €2,250, provided the battery is coupled to a PV system.
We deliberately work in ranges. The final amount depends on the audited invoice, the chosen configuration and the administrative decision.
What does a solar installation cost in Luxembourg?
For a single-family house, expect €1,400 to €2,000 per kWp turnkey. Small systems cost proportionally more than large ones.
A battery adds roughly €700 to €1,100 per kilowatt-hour. Its value depends mostly on your consumption profile.
Comparing several quotes is the only reliable way to gauge a price: two installers often size the same roof differently.
What yield is realistic in Luxembourg?
A well-oriented system typically produces 900 to 1,050 kWh per kWp per year. South-facing at 30 degrees reaches the top of the range.
Shading is the main reason results fall short of forecasts; a serious installer factors it in.
Always ask for the assumptions used: orientation, tilt, shading and self-consumption rate.
Frequently asked questions
Solar PV in Luxembourg: your questions
How much grant is available per kWp in Luxembourg?
€1,400 per kWp for the first 5 kWp, then a tapering scale, with residential PV capped at €10,000. Official rates are published on guichet.public.lu.
Is a battery subsidised?
Yes: €150 per installed kilowatt-hour, capped at €2,250, if the battery is coupled to a PV system.
What is the price for a house installation?
Usually €1,400 to €2,000 per kWp turnkey. Only a quote after a roof survey is binding.
What annual yield can I expect?
Typically 900 to 1,050 kWh per kWp per year with good orientation. Shading reduces this noticeably.
Is the calculator binding?
No. It gives an estimate based on official rates. Only the company quote and the administrative decision are binding.
Is the request free?
Yes, free and with no obligation. You remain free to accept or decline any quote.
Ready to estimate your solar grant?
Four questions, one estimate, up to three quotes from authorised installers.
- Authorised installers
- Reply within 48h
- All of Luxembourg
- Free and no obligation