Installation of a rainwater collection tank

This grant application can only be submitted for homes (single-family or two-family homes or flats) in Luxembourg City.

This grant will not be awarded for:

  • Installations using second-hand equipment
  • Work and investments which have not been subsidised by the State
  • Work and investments subsidised by the State, but for which the ministerial decision on the amount of the subsidy pre-dates the entry into force of this regulation (1 December 2022).

Amount granted

The City of Luxembourg grants 50% of the amount of the State subsidy, and grants the subsidy only once per home.

Conditions for awarding grants

The grant application must be submitted, along with the relevant supporting documents, within no more than 6 months of receiving the ministerial decision on the amount of the State subsidy.

Documents to be submitted with the application:

  • the ministerial decision itemising the amount of the State grant;
  • the applicant's bank account details.

Contact

Email: subsidesclimat@vdl.lu

Installation of a green roof

This grant application can only be submitted for homes (single-family or two-family homes or flats) in Luxembourg City.

The green roof must be installed by professionals in accordance with best industry practices, and must comprise the following:

  • A water-proofing layer
  • A membrane that is resistant to root growth, if the water-proofing layer is not
  • A drainage bed
  • A water-retention layer
  • A filtering layer
  • A substrate layer at least 8 cm thick
  • A retaining net, if necessary
  • Vegetation

If the green roof is installed above a heated space, a thermal insulation layer at least 18 cm thick, with a maximum thermal conductivity of 0.035W/(mK), will be required.

This grant will not be awarded for:

  • Installations using second-hand equipment
  • Purchases and work evidenced by an invoice issued before the introduction of this regulation (1 December 2022).

Amount granted

The City of Luxembourg will grant a subsidy in the amount of €40/m2, capped at €8,000 per home and per 10-year period.

Conditions for awarding grants

The grant application must be submitted, together with all required supporting documents, after the works have been completed but no later than 6 months after the date appearing on the relevant invoice.

Documents to be submitted with the application

  • the duly receipted invoice(s), specifying the type of works (surface area of green roof), and the customer's full name and the date of execution, plus proof of payment of said invoice(s);
  • where applicable, a plan, or any other document, attesting to the type of green roof (extensive or intensive), the height of the system, and the type of vegetation;
  • the applicant's bank account details.

Contact

Email: subsidesclimat@vdl.lu

Why choose a green roof?

Green roofs offer a range of benefits when it comes to protecting the environment and natural resources. In terms of energy savings, they help insulate a building against external heat and cold. What's more, green roofs retain rainwater, improve air quality, mitigate the urban heat island effect and support biodiversity in the city by creating a home for a wide array of animal and plant species.

Building inspection regulations

Green-roof map

With the green roof map, which displays the roofs of buildings using a colour-coding system, you can determine at a glance whether your building's roof is suitable for the installation of a green roof.

User guide

Simulateur des aides

Simulez les montants des aides dont vous pouvez bénéficier pour réussir votre projet et contribuer ainsi à la protection du climat.