The Environment Agency (Administration de l'Environnement – AEV) grants subsidies for energy efficiency renovation projects that are limited to a single construction element of the thermal envelope. The renovation works must be:
The Klimabonus scheme applies to sustainable energy efficiency renovations of residential buildings older than 10 years from the date of issue of the building permit.
For energy consultations carried out prior to 31 December 2021, the previous PRIMe House aid scheme still applies.
Financial aid for sustainable energy efficiency renovation projects may be received concurrently with aid available for the implementation of technical installations.
This Klimabonus aid can only be granted once and only for a residential building located in Luxembourg.
Any person who wishes to improve the energy performance of their residential building, that is, any:
You can submit your application in your capacity as:
Financial aid may be sought, in particular, for:
The residential building must be older than 10 years from the date of issue of the building permit when the financial aid application is submitted.
The energy efficiency enhancement works must be:
To be eligible for the subsidy:
From 1 January 2024, fossil-based insulation materials will be subsidised only if they are made from at least 50 % recycled materials;
|Performance standard III||
Performance standard II ***
|Performance standard I ***|
|Minimum thickness of insulation in cm*||Maximum value of U (W/m2K)||Maximum value of U (W/m2K)|
|External wall (external insulation)||18
|External wall (internal insulation) or insulation of the internal side combined with insulation of the external side*****||8*||10 cm*||12 cm*|
|Ground-supported wall or unheated zone||12||0.22||0.15|
|Pitched or flat roof ****||20||0.13||0.10|
|Ceiling slab against unheated zone||20||0.13||0.10|
|Floor slab against unheated zone or ground or exterior||12||0.22||0.15
|Windows and French windows (glass and frame)**||0.85 W/(m2K)||0.80||0.75|
The minimum thicknesses of the thermal insulation materials shown in the table above apply to a heat conductivity of 0.035 W/(mK) for the insulation material. For other heat conductivities, the minimum thicknesses should be converted based on the actual heat conductivity of the insulation material.
* The minimum thicknesses of the thermal insulation materials shown in the table above for external walls insulated on the internal side apply to a heat conductivity of 0.040 W/(mK) for the insulation material. For other heat conductivities, the minimum thicknesses should be converted based on the actual heat conductivity of the insulation material.
** The requirements correspond to triple glazed windows and apply to a standard-size windows (1.23 m x 1.48 m). Conditions:
*** The minimum thickness of the insulation material (performance standard III) must be complied with for all other performance standards.
**** If the loft space is heated, the renovation of the roof must include the replacement of the roof windows (if they are > 10 years old, and if UW > 1.4 W/m2K)
***** If both the internal and external sides are insulated, the insulation material applied on the external side must have a thermal resistance R of at least 2 (m2K)/W.
Some communes grant aid to supplement State aid for energy savings and renewable energies. Contact your communal administration or Klima-Agence for further information.
The minimum energy performance requirements also apply to residential buildings that are protected in the public interest, and are either fully or partially listed as national monuments.
Applications for financial aid must be filed with the Single point of contact for housing assistance (Guichet unique des aides au logement) after the end of the works and within 4 years from 31 December of the calendar year to which the invoice relates.
The invoices for the energy efficiency renovation works must be issued between 1 January 2022 and 31 December 2029 inclusive.
The first application for an agreement in principle must be submitted between 1 January 2022 and 31 December 2025 inclusive.
Applications for financial aid for liquidation must be submitted no later than 31 December 2031.
For renovation works where:
the financial aid awarded will be increased by a financial aid bonus of 25 %.
Applications for the grant must be filed with the Single point of contact for housing assistance (Guichet unique des aides au logement).
Prior to commencing the energy efficiency renovation works, you must obtain an agreement in principle from the Single point of contact for housing assistance.
To obtain an agreement in principle, you must submit your request:
The form must be accompanied by all the required supporting documents.
Once the agreement in principle has been obtained, you can begin the renovation works.
Note: If, based on the advice of the energy consultant or approved business, you change your renovation concept after obtaining the agreement in principle, you can file an application to obtain a new agreement in principle.
Once the energy renovation measure is completed, you can request payment of the financial aid for energy renovation using the same procedure as for the agreement in principle detailed above (via MyGuichet.lu or paper form). To do this, you must use the form titled 'Confirmation of energy efficiency renovation of an existing residential building' (Confirmation rénovation énergétique d’un logement existant – CONF-2022) that is specific to the refurbished element. This form is provided by the approved business or energy consultant. This form must be accompanied by the required supporting documents.
For the application for the agreement in principle, in addition to the DEPA-2022 financial aid application form (natural or legal person), you must also provide:
With respect to the application for the payment of aid, in addition to the form titled 'Confirmation of energy efficiency renovation of an existing residential building' (Confirmation rénovation énergétique d’un logement existant – CONF-2022), applicants must also provide:
The Single point of contact for housing assistance may ask you to provide any documents it deems necessary to process the file.
The amounts are calculated based on the surface areas of the renovated elements. The area of the renovated element is multiplied by the corresponding amount shown in the table below.
|Specific financial aid (euros/m2 refurbished)|
|Refurbished construction element of the thermal envelope||Category of insulation material||Performance standard III||Performance standard II||Performance standard I|
|Element in contact with the exterior: external wall (insulated on the external side, on the internal side in combination with insulation on the external side, or insulated solely on the internal side**), pitched or flat roof, floor slab in contact with the exterior||a. fossil-based and other materials*||25||30||40|
|Element in contact with an unheated zone or the ground: ceiling slab in contact with an unheated zone, wall or floor slab in contact with the ground or an unheated zone||a. fossil-based and other materials*||15||20||30|
|Windows and French windows||50||55||60|
* materials that do not fall under the definitions of categories (b) and (c)
** for insulating material placed only on the internal side, the specific financial aid [euros/m2 refurbished] shown in the table above is reduced by 25 %; the requirement that mineral insulation material (category (b)), and eco-friendly insulation material (category (c)) be installed mechanically does not apply for insulation material placed only on the interior side.
If mineral or fossil-based insulation materials made from at least 50 % recycled materials are used, a EUR 15 mark-up on the base subsidy is granted.
If eco-friendly insulation materials whose components are sourced from certified sustainable crops are used, a EUR 15 mark-up on the base subsidy is granted.
The aid is generally transferred directly to your bank account.
If you act in your capacity as a legal representative of a group of natural or legal persons, the aid is transferred directly to your bank account and you must immediately credit the bank accounts of the natural or legal persons concerned with their respective share of the aid.
A copy of these payments must be sent to the Single point of contact for housing assistance.
If you have already received the aid, you may be required to return it, if:
Demande d’une aide dans le cadre du Paquet banque climatique et logement durable - DEPA-2022 - Personne physique
Demande d’une aide dans le cadre du Paquet banque climatique et logement durable - DEPA-2022 - Personne morale