Solar panels for businesses in Luxembourg: grants, self-consumption and ROI 2026
Your warehouse roofs, car parks and workshops are idle surfaces. Covering them with photovoltaic panels turns that space into a power plant, cuts your daytime electricity bill — when your business consumes most — and decarbonises your operations. A business is not eligible for the residential Klimabonus but for dedicated schemes: the environmental protection aid regime (up to 65% for a small firm), the guaranteed feed-in tariff up to 30 kWp, tenders above that, plus recoverable VAT and the 18% investment tax credit.
Turn your roofs into a source of income and savings. Compare quotes from certified installers for free.
Business solar quote →Run the simulator →Why solar for your business?
Photovoltaics is especially profitable for a business because its consumption profile matches solar production:
You consume when the sun produces
Offices, workshops, shops, cold stores: most of your activity happens in daytime, exactly when your panels produce. A business’s self-consumption ratio is therefore often far higher than a household’s, maximising ROI — every self-consumed kWh replaces a kWh bought from the grid.
Surfaces already available
Warehouse roofs, sheds, car parks, carports: these cost nothing extra and are monetised without additional land. A large flat roof is ideal for tens to hundreds of kWp.
Independence from electricity prices
On-site production shields part of your bill from market volatility — a strategic advantage for energy-intensive activities.
Decarbonisation and image
Solar cuts your indirect (scope 2) emissions, supports your carbon footprint and meets growing client and EPBD requirements on tertiary building performance.
Commercial solar uses business aid, not the residential Klimabonus. For technical aspects, see our full solar panels guide.
Self-invest or use a third-party investor?
A business has two main routes to equip its roofs. The choice depends on your investment capacity and willingness to manage the system.
💼 Self-investment Maximum ROI
- You finance the install (own funds or loan)
- You capture 100% of savings and grants
- Depreciation + 18% investment tax credit
- You own the asset
- Ideal with cash flow and a high self-consumption ratio
🤝 Third-party investor (PPA / roof lease)
- A developer finances, installs and operates the system
- Roof lease: they pay you annual rent (20–30 years)
- PPA: you buy the on-site power at a contractual rate
- Zero investment, zero maintenance for you
- Common for installations from 100 kW
With cash flow and high daytime demand, self-investment gives the best return. To monetise a large roof without capital, a third-party investor unlocks the space risk-free. An installer can cost both scenarios.
Grants and remuneration in 2026
The support mechanism depends directly on your system’s power. Three logics coexist:
| Power | Mechanism | Remuneration / aid |
|---|---|---|
| ≤ 30 kWp | Guaranteed feed-in tariff | ≈ €0.125–0.133/kWh, guaranteed 15 years (degressive) |
| 30 – 200 kWp | Tender — investment aid | Awarded competitively |
| > 200 kW | Tender — market premium | Premium over 15 years, awarded competitively |
| OR environmental protection aid regime (renewable-energy production): small firm up to 65%, medium up to 55%, large up to 45% of eligible costs | ||
Sources: Klima-Agence (feed-in tariff), Guichet.lu (environmental regime, renewed by the law of 8 December 2025). Indicative rates by company size and EU framework.
Running a broader efficiency project (solar + insulation, heating, ventilation)? It can be co-funded up to 70%: see the SME Packages grants for SMEs.
In 2026, self-consumption is clearly the most profitable model for a business consuming during the day: a kWh produced and used on site avoids purchased electricity (≈ €0.20–0.30/kWh), clearly more than an injected kWh (≈ €0.10–0.13/kWh). The guaranteed feed-in tariff for ≤ 30 kWp still exists (15 years) but is now degressive — indicatively ≈ €0.125–0.133/kWh in 2026, degressive, to confirm with Klima-Agence/Creos. National policy has also shifted decisively toward self-consumption (on the residential side, the Klimabonus has since 4 January 2026 even been reserved for self-consumption installations and is incompatible with the guaranteed injection tariff — a purely residential rule that shows the direction of travel but does not apply to businesses). So you size primarily to cover daytime load, with surplus valued via injection. See our solar self-consumption guide.
State subsidies and tenders cannot be combined on the same project. As with all business aid, apply before starting. A tender for >30 kWp systems is opened periodically by the Ministry of the Economy (e.g. a €3M call for 30–200 kWp including solar carports).
Tax: VAT, depreciation and the 18% credit
Recoverable VAT
The 3% rate is for dwellings. Your business is invoiced at 17% but, if registered, recovers that VAT. Always think in amounts excl. VAT.
Depreciation of the system
A PV system depreciates linearly over ~20 years (~5%/yr) as a deductible expense. Financing costs (interest) are also deductible.
Investment tax credit — 18%
Reformed in 2024 (art. 152bis LIR), the ecological/energy-transition credit reaches 18% for eligible assets, and can include a PV system with storage for self-consumption. A Ministry of the Economy eligibility certificate is required.
Taxable injection income
Unlike the private ≤30 kWp « amateur » regime, injection income earned by a business is taxable operating income. Your accountant records production and resale.
Sizing, prices and connection
At commercial scale, cost per kWp drops markedly thanks to economies of scale. Size first to cover daytime load, then value the surplus.
| Installation size | Indicative area | Indicative price/kWp | Typical profile |
|---|---|---|---|
| 10 – 30 kWp | 60 – 180 m² | ~€1,500 – €2,000/kWp | Shop, SME, offices |
| 30 – 100 kWp | 180 – 600 m² | often < €1,260/kWp | Workshop, hotel, mid-size |
| 100 – 500 kWp+ | 600 – 3,000 m²+ | falls with scale | Warehouse, industry, logistics |
Indicative 2026 ranges, before grants, to confirm by quote. Price depends on the roof, inverter and any storage.
Commercial systems connect in three-phase. Above a certain power, Creos runs a connection study and possible reinforcement. Anticipate this — it drives the project schedule. A municipal permit and, depending on the site, a nature-protection authorisation may be needed.
Solar carports and winning combinations
Beyond roofs, two levers boost a business solar project’s return:
Solar carports
Covering a staff or customer car park with PV carports produces electricity while providing shelter (summer shade, weather protection). This category is explicitly supported in national tenders and pairs ideally with charging stations.
Solar + EV charging
Powering your EV charging stations with your solar output cuts fleet and staff charging cost to near zero.
Solar + heat pump
Pairing solar with a commercial heat pump maximises daytime self-consumption and decarbonises both electricity and heating.
Your project step by step
Roof and consumption study
Analysis of solar potential (area, orientation, shading, structure) and your daytime consumption profile to size the system.
Choose the financing model
Self-investment, third-party investor, roof lease or PPA — costed by your installer.
Aid regime and Creos connection
By power: feed-in tariff, tender or environmental regime. Launch the Creos connection request in parallel.
Apply for aid before works
File the application and wait for approval before starting.
Installation and commissioning
Panels, inverters, cabling and bidirectional meter, then commissioning and grid connection.
Operation and payout
Production monitoring, self-consumption and surplus value, aid paid after proofs.
Ready to monetise your roofs?
Our partner installers handle the potential study, financing-model choice and a quote compliant with business aid schemes.
Mistakes to avoid
Expecting the Klimabonus for a business
The PV Klimabonus is residential. A professional install uses other regimes.
Oversizing relative to self-consumption
A system too large for your daytime load injects a lot of surplus at a rate below the purchase price, hurting ROI. Size on your consumption profile first.
Starting works before aid approval
As with every business regime, the application precedes the install.
Neglecting the Creos connection study
At high power, connection may require a study and lead time. Anticipate from the start.
Forgetting the roof structure
A warehouse roof must bear the panel load. A structural study is essential before installation.
FAQ
Is a business eligible for the PV Klimabonus?
No. The PV Klimabonus is for dwellings. A business funds via the environmental regime (up to 65% for a small firm), the feed-in tariff (≤30 kWp) or tenders (above 30 kWp).
What is the feed-in tariff for a business?
For ≤ 30 kWp, the guaranteed feed-in tariff still exists over 15 years but is now degressive: indicatively ≈ €0.125–0.133/kWh in 2026 (about €0.1333/kWh for 0–10 kWp and €0.1252/kWh for 10–30 kWp), to confirm with Klima-Agence/Creos. Above 30 kWp, remuneration is awarded via competitive tenders (investment aid 30–200 kWp, market premium ≥ 400 kW), not a fixed tariff.
Is VAT recoverable?
Yes. Invoiced at 17%, recovered by a VAT-registered business, plus depreciation and the 18% investment tax credit.
Can you install without self-investing?
Yes, via a third-party investor: roof lease (annual rent) or PPA (buying on-site power). Common from 100 kW.
Is a permit needed on a business building?
A declaration or permit may be needed depending on the commune and project (overlay, carports, protected zone). Your installer checks and handles it.
Self-consumption or resale — which pays more?
For a daytime-consuming business, self-consumption is almost always more profitable: a self-consumed kWh replaces a ≈ €0.20–0.30/kWh purchase, versus ≈ €0.10–0.13/kWh for injected surplus (degressive guaranteed feed-in tariff for ≤ 30 kWp, to confirm with Klima-Agence/Creos).