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Installing photovoltaic panels on company roofs

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[ Detailed version of the measure ]
Last update: 20/02/2025
  • Available tools
  • Possibility of assistance
  • Subsidies available

To make this measure more effective and tailored to the specific context of your company, we recommend that you first perform an overall analysis of your energy situation.

Photovoltaics: an environmentally and financially interesting alternative for your company’s electricity production

A photovoltaic installation enables you to produce renewable electricity and to decouple part of your electricity costs from market price fluctuations. Beyond self-consumption, there are other support mechanisms that can represent an interesting economic model, such as the guaranteed feed-in tariff or the market premium resulting from a call for tenders. The installation can be financed from your own funds or by a third-party investor, who can also take care of its planning and completion.

Definition of the requirements

Analysis of plant location and solar potential – solar cadastre

To go further:

  • Analysis of load curve and estimation of degree of self-consumption
    Request consumption data from the grid operator or supplier (possibility of requesting through the supplier’s online portal) and compare with the photovoltaic system’s forecast production to estimate the degree of self-consumption.
  • Project implementation by a project developer / third-party investor
    For installations of 100 kW or more, it is possible to commission a photovoltaic project developer who can take care of the development, financing, construction, operation and maintenance of the installation.

Identify solution and check feasibility of photovoltaic panel installation project

General planning of the installation (depending on the scope of the project, in collaboration with a qualified craftsman or design office)

Feasibility study of the solar panel installation project

  • Technical and constructive feasibility (static calculations, roof condition, etc.): design office
  • Connection feasibility: network operator
  • Fire protection requirements: CGDIS

Request for quotation

Subsidy application

Government subsidies

Please note: any application for government or non-government subsidies must comply with the “incentive effect”, subject to compliance with the subsidy conditions.
In order to respect the “incentive effect”, no binding commitment (signing a quotation; paying a deposit) may be made BEFORE having received the agreement in principle from the State or the electricity and natural gas supplier following an application for subsidy.

Klimabonus (PV < 30kWp)

  • Either the investment subsidy of 50% for the installation of photovoltaic modules operated in “self-consumption mode” without a guaranteed feed-in tariff. Power storage systems are subsidised if the building is not used for residential purposes and the storage capacity is ≤ 1 kWh/kWp.
    In this case, the feed-in tariff is not guaranteed and it is necessary to sign a contract with a provider to buy the surplus electricity.
  • Or an investment subsidy of 20% for the installation of photovoltaic systems operated in “feed-in mode” and a guaranteed feed-in tariff for a period of 15 years with a cap of 500€ per kWp. Self-consumption is possible under this option.
  • For further information: Klima-Agence.

Temporary environmental impact aid scheme (PV ≤ 60 kWp).

The extended aid scheme “SME Packages Sustainability” provides more incentives for companies to invest in measures that significantly improve their environmental impact. Photovoltaic installations are subsidised at 70% for small, 60% for medium and 50% for large enterprises for projects costing more than €7,500, with a maximum amount of €100,000.

Call for projects

Call for tenders for operating aid for Agri-PV projects in Luxembourg. (until 1 September 2025).

Projects benefit from a market premium contract for the injection of the electricity produced for 15 years. Note that buildings and non-eligible areas are excluded.

Here are the different lots included in this second call for tenders:

  • Lot 1: Vertical bifacial panel power plant or Tracker (power > 100 kWp and ≤ 5 MWp).
    • Category 1: Grassland used for fodder or grass production.
    • Category 2: Grassland used for livestock farming (including poultry farming).
    • Category 3: Arable land for all crops (including special crops).
  • Lot 2: Photovoltaic canopies (power > 100 kWp and ≤ 5 MWp)
    • Category 4: Special crops.
  • Lot 3: Ground-mounted power plants (output > 100 kWp and ≤ 5 MWp)
    • Category 5: Grassland (forage and livestock) and arable land.

Consult the practical details on guichet.lu.
The specifications can be requested by e-mail from: PV@energie.etat.lu.

N.B. Government subsidies and calls for projects cannot be combined for the same project.

Applying for permits

After the installation of photovoltaic panels

  • In the case of a system < 30 kWp , apply for the government Klimabonus subsidy
    • In the case of an application for Klimabonus subsidies, the application must be made after the installation has been completed, unlike other subsidies where the subsidy must be applied for in advance of the project.
    • For further information: Klima-Agence
  • In the case of self-consumption: submitting the application for self-consumption to the grid operator
  • Application for a return on the electricity produced by the photovoltaic installation, according to the circumstances of each case
    • Guaranteed feed-in tariff under the Klimabonus subsidy scheme (< 30 kWp) or without subsidy for installations < 200 kWp or < 500 kWp with cooperative agreement with the grid operator
    • Market premium based on a call for tenders for photovoltaic installations ranging from 200 kWp to 10 MWp from the grid operator
    • Market feed-in contract for self-consumption with a supplier
  • Scheduled maintenance of the installation

Implementation aid

Contact us

I would like more information on:

  • Fit 4 Sustainability
  • Government subsidies
  • Support
  • Identifying partners

I would like more information on:

  • Klimabonus subsidies or photovoltaic and electromobility subsidy programmes
  • A technical aspect of the measure
  • A specific tool
  • A technical aspect of the site (404 link, etc.)

Contact Klima-Agence