Klimabonus 2026 · Solar PV
Solar Panel Subsidies in Luxembourg
Up to €10,000 for the photovoltaic installation, combinable with €2,250 for a home battery, up to €12,250 total (€10,000 panels + €2,250 battery). Discover exact amounts, eligibility conditions, and application procedures.
Solar PV Subsidies Overview
The Luxembourg government's Klimabonus programme offers an investment premium for installing photovoltaic systems on residential and non-residential buildings. This subsidy can be combined with the reduced 3% VAT rate and the Klimaprêt interest subsidy.
- Maximum premium of €10,000 depending on installed capacity, reached at about 15 kWp
- Official formula: P × (1,155 − 1,155/35 × P) €
- Minimum capacity of 2 kWp, installation run for self-consumption
- 3% VAT for a home at least 10 years old, capped at €50,000, not automatic
- Combinable with the Klimaprêt interest subsidy (1.5%)
- Main residence in Luxembourg only
Klimabonus 2026 Premium Scale, Solar PV
| Installed Capacity | Indicative Subsidy | Notes |
|---|---|---|
| 2 kWp (minimum) | €2,180 | Minimum eligible capacity |
| 5 kWp | €4,950 | Calculated with the official formula |
| 10 kWp | €8,250 | Degressive subsidy by capacity |
| 15 kWp and above | €10,000 | Subsidy cap |
Eligibility Conditions
Existing building
The building must have been completed for at least 2 years at the time of application. New constructions are not eligible.
Certified installer
Installation must be carried out by a certified professional established in Luxembourg or the EU.
Technical standards
Panels must comply with IEC 61215 and IEC 61730 standards. Inverters must be VDE-AR-N 4105 certified.
Grid connection
The installation is connected to the public electricity grid and run for self-consumption: the applicant waives payment for the electricity fed into the grid.
Luxembourg residence
The applicant must be an owner or tenant (with owner's consent) of a property in Luxembourg.
No double subsidies
Installations already receiving investment aid under the modified law of 18 February 2010 cannot additionally benefit from Klimabonus.
Application Process
- 1
Get quotes
Compare at least 3 quotes from certified installers. Use our free comparison tool to save time.
- 2
Check eligibility
Ensure your building and project meet all conditions. Use the solar cadastre to assess your roof potential.
- 3
Order the installation
For photovoltaics, no prior application is needed: the order and invoice dates determine the applicable amount. With an installer listed in the register, the subsidy can be deducted directly from the invoice (pre-financing).
- 4
Complete installation
Have your panels installed by the chosen contractor. Installation must match the signed quote.
- 5
Request grid connection
Contact your grid operator (Creos, Sudstroum, etc.) for connection and commissioning.
- 6
Receive the premium
After commissioning, submit the application on MyGuichet.lu with the invoices, within 4 years from 31 December of the invoice year. The premium is paid once the file is approved.
Additional Benefits
3% VAT
Super-reduced rate on the complete installation (materials + labour) for a home at least 10 years old used as the main residence, tax benefit capped at €50,000 per home. Not automatic: the company applies it after prior approval from the administration, or you request a refund. Saving of 14% compared to the standard 17% rate.
Klimaprêt
1.5% interest subsidy on a climate loan, taken into account up to €100,000, to finance your energy renovation works, including solar PV.
Pre-financing
With an installer listed in the Ministry of the Economy register, the subsidy is deducted directly from the final invoice, without waiting for the State payment.
Tax deduction
Investments in renewable energy may be tax-deductible under certain conditions. Consult your tax advisor.
Frequently Asked Questions
Can I install solar panels on a flat roof?
How long does it take to get a return on investment?
Is the premium compatible with a home battery?
How long do solar panels last?
Do I need a building permit?
What happens if I move?
Do I need to apply before the works?
⚠️ Disclaimer: The information on this page is provided for guidance only and does not constitute a contractual commitment. Amounts, conditions, and procedures may change. We strongly recommend consulting official sources (Klima-Agence, MyGuichet.lu, Ministry of Environment) to verify the accuracy and currency of the data before taking any action. Amounts checked on 27 September 2026.
Klimabonus 2026 · Solar PV
€10,000