Solar Panels Luxembourg 2026 : Brand Comparison, Prices and Klimabonus
Table of contents (6)
Klimabonus Wunnen 2026 : Luxembourg's New Solar Grant Programme
Since 4 January 2026, the Klimabonus Wunnen has replaced the former PRIMe House programme. The key innovation: third-party pre-financing — the subsidy is deducted directly from the installer's invoice. You only pay the net amount.
| Klimabonus Grant 2026 | Maximum Amount |
|---|---|
| Photovoltaic installation | Up to €10,000 (cap of €1,250/kWp) |
| Storage battery (9 kWh) | Up to €2,250 |
| Cumulative maximum total | €12,250 |
| Reduced VAT | 3% instead of 17% |
| Enoprimes (Enovos/Creos) | ~€1,500 additional |
| Municipal subsidies | €500–2,000 depending on commune |
Eligibility requirements: minimum capacity 2 kWp, self-consumption mandatory, residential building in Luxembourg, registered installer. Feed-in tariff for surplus: ~€0.1374/kWh guaranteed for 15 years.
Solar Installation Prices in Luxembourg 2026
| Capacity | Gross cost (before grants) | After Klimabonus (estimate) |
|---|---|---|
| 3 kWp | €6,300 – €7,500 | €2,550 – €3,750 |
| 5 kWp | €10,750 – €11,500 | ~€4,000 – €5,000 |
| 6–8 kWp | €12,000 – €15,000 | ~€4,000 – €6,500 |
| 10–15 kWp | €20,000 – €30,000 | ~€10,000 – €20,000 |
Price per kWp: between €1,400 and €2,300/kWp depending on complexity. Return on investment: 6 to 12 years (under 5 years with all cumulated grants according to some installers).
Solar Panel Brand Comparison
| Brand | Technology | Efficiency | Warranty | Positioning |
|---|---|---|---|---|
| SunPower / Maxeon | Back Contact IBC | Up to 24.1% | 25 yr (perf. 40 yr) | Ultra-premium |
| JinkoSolar Tiger Neo | N-type TOPCon | Up to 24.8% | 25–30 years | Volume premium |
| LONGi Hi-MO X6 | N-type TOPCon/HPBC | Up to 24.5% | 25–30 years | Best kWh/€ ratio |
| Q Cells (Hanwha) | Q.ANTUM / N-type | Up to 22.5% | 25 years | European premium |
| Canadian Solar | TOPCon N-type | Up to 24% | 25–30 years | Best value for money |
| Solarcells.lu | Monocrystalline LU | >400 Wp/panel | IEC certified | Local Luxembourg manufacturer |
Inverter Comparison
| Inverter | Type | Efficiency | Best for | Indicative price |
|---|---|---|---|---|
| SolarEdge | String + power optimisers | Up to 99% | Shaded roofs, panel-level monitoring | €7,000–16,000 |
| Enphase IQ8 | Micro-inverters | 97%+ | Partial shading, maximum DC safety | €1,200–3,600 |
| SMA Sunny Tripower | String (central) | Up to 98% | Reliability, after-sales, budget | €600–2,600 |
| Fronius GEN24 | String + battery | Up to 97.9% | Premium quality, battery-compatible | €900–3,000 |
Which Technology to Choose in 2026?
In 2026, polycrystalline panels are virtually obsolete for residential use. The dominant standard is monocrystalline N-type TOPCon with 22–24.8% efficiency and only 0.4%/year degradation.
- Tight budget: Canadian Solar TOPHiKu6 or LONGi Hi-MO X6 + SMA inverter
- Best kWh/€: LONGi Hi-MO X6 (TOPCon) + Fronius
- Shaded roof: Enphase IQ8 (micro-inverters) + Q Cells
- Maximum performance: SunPower Maxeon 6 (24.1%) + SolarEdge
- Local argument: Solarcells.lu + SMA or Fronius
Get Free Quotes from Certified Installers
Compare up to 5 quotes from approved solar installers in Luxembourg. 100% free, no obligation. Our partners operate throughout the Grand Duchy: Luxembourg City, Esch-sur-Alzette, Differdange, Ettelbruck, Diekirch and all communes.
Frequently asked questions
The Klimabonus Wunnen 2026 offers up to €10,000 for PV installation (max €1,250/kWp) and up to €2,250 for a 9 kWh battery. The cumulative maximum is €12,250, plus Enoprimes (~€1,500) and municipal subsidies (€500–2,000). VAT is reduced to 3%.
Yes. PRIMe House was replaced by Klimabonus Wunnen on 4 January 2026. The key innovation is third-party pre-financing: the subsidy is deducted directly from the installer's invoice, so you only pay the net amount upfront.
In 2026, the gross cost is €1,400–2,300/kWp. A 5 kWp system costs €10,750–11,500 before grants, around €4,000–5,000 after Klimabonus. Return on investment is estimated at 6 to 12 years, sometimes under 5 years with all cumulated grants.
It depends on your needs: SunPower Maxeon offers the highest efficiency (24.1%) with a unique 40-year warranty. LONGi Hi-MO X6 provides the best kWh/€ ratio. For shaded roofs, Enphase IQ8 micro-inverters are the reference. N-type TOPCon technology has become the 2026 standard.
Yes. The feed-in tariff for surplus electricity injected into the grid is ~€0.1374/kWh, guaranteed for 15 years. The condition is that self-consumption takes priority; the surplus is automatically fed into the Creos/Enovos network.
Data verified in April 2026
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