Solar panel prices in Luxembourg
A residential solar installation in Luxembourg costs on average €2,100 to €2,500 per kWp, materials and installation included, before the Klimabonus is deducted.The total price mainly depends on installed power (kWp), roof type and site accessibility.
Indicative price by installed power
| Power | Price before grant |
|---|---|
| 3 kWp | €6,600 – €7,500 |
| 5 kWp | €10,750 – €11,500 |
| 6 kWp | €12,600 – €14,000 |
| 8 kWp | €16,800 – €18,000 |
| 10 kWp | €21,000 – €22,000 |
2026 market ranges cross-checked against several comparison sites and installers active in Luxembourg. For the exact Klimabonus grant by power tier, see ourdetailed Klimabonus 2026 scale — for example, roughly €4,950 for 5 kWp, bringing the net cost down to €5,800–6,550 before the reduced 3% VAT.
What makes the price vary
- Installed power (kWp) — scale effect on the price per kWp.
- Roof type and condition (pitch, material, accessibility, possible frame reinforcement).
- Panel and inverter brand and technology.
- Whether a storage battery is added — with its own grant scale.
- The municipality and distance to available installation teams — see our pages by municipality.
Payback period
For a well-sized self-consumption installation, the typical payback period observed in Luxembourg in 2026 is 7 to 11 years, after grants. Self-consumed electricity saves 20–30 cents/kWh, while surplus sold at the variable, market-indexed rate brings only 4–10 cents/kWh (the historical guaranteed rate of €0.1374/kWh is no longer compatible with the Klimabonus 2026, which requires self-consumption). See our guide onsurplus resale for details, or ourdetailed ROI calculation page for a full worked example.
Free simulation based on your roof and consumption.
Frequently asked questions about solar panel prices
What is the average price of a residential solar installation in Luxembourg?
Expect €2,100 to €2,500 per kWp, materials and installation included. For a standard 5 kWp system, total cost before the grant is usually €10,750 to €11,500. For 8 to 10 kWp, expect €17,000 to €22,000 before the Klimabonus is deducted.
Does the price per kWp drop as installed power increases?
Generally yes: part of the cost (labour, grid connection, inverter) is fixed regardless of power, so the price per kWp often falls on larger installations.
Does the price include a storage battery?
No, a storage battery is a separate and significant line item with its own Klimabonus grant scale. See our dedicated guide on storage for that.
How much is left to pay after deducting the Klimabonus?
For a 5 kWp system (≈€4,950 grant), the net cost drops to roughly €5,800–6,550 before the reduced 3% VAT. For 8 kWp (≈€7,128 grant), expect around €9,700–10,900 net. See the full grant scale on our Klimabonus page.
Does roof type affect the price?
Yes: a flat roof, an old roof needing reinforcement, or a complex roof (multiple sections, dormers) increase installation time and therefore the quote, compared with a simple, recent pitched roof.
How quickly does a solar installation pay for itself in Luxembourg?
For a well-sized self-consumption installation, the typical payback period observed in Luxembourg in 2026 is 7 to 11 years, after grants — self-consumed electricity saving 20–30 cents/kWh, versus 4–10 cents/kWh for surplus sold at the variable rate.