Installing photovoltaic panels on company roofs

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

• Self-assessment of solar potential

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)

• Qualified craftsmen (certified electrician)
• List of large-scale photovoltaic project planners

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

• Qualified craftsmen (certified electrician)
• Possibility of including plant maintenance in the offer

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.

• Verification of company eligibility and costs: Ministry of the Economy (Department for Support to SMEs)
• Application deadline: 30 June 2025
• For any questions
  • Chambre of Commerce
  • Chambre des Métiers 

Call for projects

There are currently no calls for projects open. We will inform you as soon as the next call for projects is launched.

For your information, the last investment support call for projects ended on 31 October 2024, and the last operational support call for projects ended on 30 November 2024.

In the attached practical details, you can find a multi-year indicative schedule referencing the planned volumes and budgets for future calls for tenders by year. You will also find a history of past calls for projects, along with the relevant tender specifications and results.

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

Applying for permits

• Municipal permits depending on the municipality where the project is located.
• Permit and conditions for the installation of the grid operator.
• “Nature protection” permit if the facility is located in a protected area.

After the installation of photovoltaic panels

• 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