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Renov.lu · Luxembourg

Simulateur Photovoltaïque Luxembourg

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Renov.lu Guide · Luxembourg Updated — July 2026

Solar panels in Luxembourg: price, grants and payback in 2026

The Renov.lu solar simulator estimates the optimal kWp, annual output, 2026 Klimabonus grants and payback from your real roof address (Google Solar). Here are the reference figures used in Luxembourg.

Price of a solar installation

Price and specifications of a PV installation (Luxembourg, 2026)
Item2026 reference
Installed cost≈ €2,250/kWp
Power of one panel400 Wp
Expected output in Luxembourg≈ 950–1,050 kWh/kWp/yr
Lifespan / warranty25 years
Grid electricity price≈ €0.31/kWh
Guaranteed feed-in tariff (≤ 30 kWp)≈ €0.13/kWh
Home battery≈ €710/kWh

Solar grants 2026 (Klimabonus + municipal)

Grants for a solar installation in Luxembourg, 2026
SchemeAmountCap
Self-consumption + pre-financing (private ≤ 30 kWp)kWp × (1,155 − 33 × kWp)€10,000
Home-battery grantkWh × (500 − 27.8 × kWh)€2,250
Variable tariff (business > 30 kWp)€1,250/kWp€37,500
Complementary municipal grantsup to +25% of State aiddepends on municipality
Example: for a 6 kWp system (≈ €13,500 before grants) the self-consumption grant reaches ≈ €5,700; for 9 kWp ≈ €7,700 (capped at €10,000). A 6 kWp system produces about 6,000 kWh/yr in Luxembourg.

How the simulator works

  1. Enter the address of the installation: the roof solar potential is analysed via Google Solar.
  2. Enter your annual electricity use to size the optimal kWp.
  3. Get your estimate: output, 2026 grants, payback and a free PDF report.

Frequently asked questions

How much does a solar PV installation cost in Luxembourg in 2026?

Around €2,250 per kWp installed. A 6 kWp residential system therefore costs about €13,500 before grants.

What solar grants are available in Luxembourg in 2026?

For a private household up to 30 kWp: a self-consumption grant with pre-financing of up to €10,000, a home-battery grant of up to €2,250, and complementary municipal grants of up to +25% of the State aid depending on the municipality.

Are solar panels worth it in Luxembourg?

Yes. Self-consumption is valued at the grid price (about €0.31/kWh) and exported surplus at about €0.13/kWh guaranteed. Payback is typically 8 to 12 years for a 25-year lifespan.

How many kWp does my house need?

On average about 1 kWp per 1,000 kWh consumed per year. The simulator computes the optimal power from your roof area and irradiation (Google Solar).

What annual output can I expect in Luxembourg?

About 950 to 1,050 kWh per installed kWp per year. A 6 kWp system therefore produces around 6,000 kWh/yr.

What is the feed-in tariff?

For a system up to 30 kWp, exported surplus is bought back at about €0.13/kWh guaranteed.

Do I need a home battery?

A battery raises your self-consumption rate. Expect about €710/kWh, with a grant of up to €2,250.

Learn more: solar panels guide · solar grants · payback · self-consumption

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