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Subsidies

Photovoltaic subsidies 2026 in Luxembourg

Klimabonus 523 and 524, prefinancing, communal subsidies, 3 % VAT, feed-in tariff: everything that lowers the price of your solar system, commune by commune.

Klimabonus 2026 – the national subsidy

up to 10,000 €

for the photovoltaic installation (Klimabonus 523), reached from 15 kWp

up to 2,250 €

for a home battery (Klimabonus 524), reached from 9 kWh

0 €

to advance: with prefinancing the Klimabonus is deducted directly from our invoice

Main conditions

  • Self-consumption system, minimum 2 kWp, maximum 30 kWp, installed by a qualified professional
  • Invoices dated 4 January 2026 to 31 December 2029, application on MyGuichet.lu until 31 December 2031
  • Battery coupled to the system, minimum 2 kWh
  • Not combinable with the guaranteed feed-in tariff

Prefinancing: you only pay the net amount

Handelux is listed in the Ministry of the Economy's register of installers admitted to the prefinancing procedure. With your mandate we file the request, the aid is deducted from the final invoice and the State pays it to us. The deposit is capped at 30 % of the price incl. VAT. From 1 January 2027 this procedure is folded into the Klimabonus 2026 regime.

Additional aid

  • Communal subsidy: depending on your commune, 20 to 50 % of the Klimabonus, a fixed amount or a bonus per kWp – see the list below
  • Social top-up from the Ministry of Housing: can raise the aid up to 100 % depending on household income
  • Klimaprêt: the State covers 1.5 % interest on a loan up to €100,000 for homes older than 10 years
  • 3 % VAT on supply and installation of the panels (battery 17 %)

Klimabonus by system size (2026 formula, self-consumption)

System sizeKlimabonusIndicative costCoverage
2 kWp2,178 €4,000 €54 %
3 kWp3,168 €6,000 €53 %
4 kWp4,092 €8,000 €51 %
5 kWp4,950 €10,000 €50 %
6 kWp5,742 €12,000 €48 %
7 kWp6,468 €14,000 €46 %
8 kWp7,128 €16,000 €45 %
9 kWp7,722 €18,000 €43 %
10 kWp8,250 €20,000 €41 %
11 kWp8,712 €22,000 €40 %
12 kWp9,108 €24,000 €38 %
13 kWp9,438 €26,000 €36 %
14 kWp9,702 €28,000 €35 %
15 kWp10,000 €30,000 €33 %

Source: guichet.lu, Klimabonus 2026 – aid = P × (1 155 − 33 × P) €, maximum 10 000 € from 15 kWp; battery Q × (500 − 500/18 × Q) €, maximum 2 250 € from 9 kWh. Indicative cost at 2,000 €/kWp.

Estimate your savings in 30 seconds

Indicative simulation based on typical Luxembourg yields and the current Klimabonus scheme. Your personalised offer will be based on a real roof study.

Recommended system–
Annual production–
Estimated cost–
Klimabonus (PV + battery), deducted from your invoice–
Net investment–
Yearly savings & revenue–
Payback–

Indicative: 2026 Klimabonus formula, ~950 kWh/kWp, reference prices. Commune subsidies come on top – see your commune page.

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Communal subsidies

Many communes add their own subsidy on top of the Klimabonus: a percentage of the national aid, a fixed amount or a bonus per kWp. Select your commune to see the details and the total you can expect.

Questions about subsidies

How much Klimabonus can I get in 2026?

The aid for the PV installation follows the formula P × (1,155 − 33 × P) €: €2,178 for 2 kWp, €4,950 for 5 kWp, €8,250 for 10 kWp and €10,000 maximum from 15 kWp. A battery adds up to €2,250 (from 9 kWh). Communes often top up 20 to 50 % of the State aid.

What is prefinancing? Do I have to advance the money?

No. Handelux is listed in the Ministry of the Economy's register of installers admitted to the prefinancing procedure. We file the request in your name, the Klimabonus is deducted directly from our final invoice and the State pays it to us. The deposit at signature is capped at 30 % of the price incl. VAT.

How does the communal subsidy work?

Each commune has its own rule: a percentage of the Klimabonus (often 25 to 50 %), a fixed amount or a bonus per kWp, sometimes capped. The owner applies after the Klimabonus decision and it is paid directly to your account. See your commune page for the details and the total.

Self-consumption or guaranteed feed-in tariff?

The Klimabonus 2026 requires self-consumption and a waiver of the guaranteed feed-in tariff; the surplus is sold at market price to your supplier. The alternative is the 15-year guaranteed tariff (0.1333 €/kWh up to 10 kWp in 2026) without Klimabonus. For an occupied home, self-consumption with Klimabonus is almost always more profitable.

Which VAT rate applies?

Supply and installation of photovoltaic panels on a private home benefit from the super-reduced rate of 3 % since 2023. The battery, the wallbox and material delivered without installation are at 17 %. Our offers show the rate line by line.

Do I have to declare the income from my system?

For systems of 1 to 30 kWp the tax administration tolerates treating production as a non-taxable hobby (circular L.I.R. no. 14/2). Self-consumption is not a commercial activity. Above 30 kWp or with full sale, the income is commercial.

Request your free quote

Tell us a little about your home. We will study your roof on the Geoportail, prepare a first simulation of production and subsidies, and call you back within one working day.

  • Free and without obligation
  • Site visit by an engineer
  • Subsidy application handled for you
  • We answer in Luxembourgish, French, German or English

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