Guide · Process
Good news: for a residential installation, your installer handles most of the technical steps. From quote to commissioning usually takes a few weeks to a few months, depending on administrative and connection timelines.
Here is the typical journey, based on official Luxembourg sources. Details (municipal authorization, grid operator depending on your location) should be confirmed case by case.
The installation itself often takes just one to two days. It is the administrative steps (any authorization, grant application, connection request) that set the schedule.
For a system ≤ 30 kW — almost every home — connection is made on a simple request to the grid operator.
An installer established in Luxembourg (holding the electrician's business permit) checks the roof's suitability, sizes the system and prepares the quote.
The Klimabonus 2026 grant (up to €10,000) is handled via Klima-Agence / guichet.public.lu. With pre-financing, a registered installer deducts the grant directly from your invoice. The order must be placed by 31/12/2029 for pre-financing, and the grant application filed by 31/12/2031.
Check with your municipal administration whether a building permit is required — it depends on the municipality and the building. On an existing roof it is often simplified, but confirm it.
For ≤ 30 kW, a simple request to the grid operator (Creos in most municipalities) suffices, via the myCreos platform — preferably made by your electrician. The operator has one month to respond; beyond that, silence counts as approval.
Mounting the panels and inverter by the installer usually takes 1-2 days, followed by preparatory works and a grid-side check.
The grid operator carries out the connection works (within ~30 days) and fits the appropriate smart meter. After a check, the system is commissioned.
The grid operator depends on your municipality: Creos covers most of the country, but some municipalities have their own operator. Check yours before the connection request.
Estimate your roof's output, savings and grant for free — then get a quote from an installer who handles the formalities.
General information based on official Luxembourg sources (guichet.public.lu, Klima-Agence, Creos). Procedures, timelines and conditions may change and vary by municipality — to be confirmed with the competent authorities and your grid operator.