Investment aid for the construction and operation of solar photovoltaic power plants following a call for tenders

Last update

Summary:

A new call for tenders for investment aid is open to companies wishing to build and operate solar photovoltaic power plants.

Financial aid application for companies

In order to develop the construction and operation of solar photovoltaic power plants in Luxembourg, a new call for tenders for investment aid is now available to companies.

This aid applies to the installation of power plants for the production of electricity from solar photovoltaic energy and which are to be installed:

  • on the external envelopes of buildings;
  • in economic activity areas (ZAE sites); or
  • as shade structures.

With regard to the external envelopes of buildings, a specific lot has been made available to photovoltaic power plants using 'light' modules on rooftops or modules installed on facades. A distinction is made with regard to 'conventional' rooftop power plants. All lots are divided into 2 sublots: power plants equipped with or without a storage system.

The aid is awarded following a call for projects. The call for tenders is a competitive procedure: projects requesting the least amount of aid in relation to the installed capacity will be selected, within the limits of the available budget.

The call for projects:

  • has a maximum budget of EUR 17 million; and
  • is open from 19 July to 17 October 2025 (12.00 CET).

Applications for investment aid must be submitted via the MyGuichet.lu platform. The specifications can be found here (French, Pdf, 639 Kb). An FAQ (French, Pdf, 410 Kb) is also available.

Please note: this call for projects should not be confused with the current call for tenders aimed at awarding operating aid by means of a market premium contract. The same project cannot be tendered simultaneously in the 2 calls for tenders.

Who is concerned

All legal persons (SA, SARL, cooperatives) who:

  • are established in Luxembourg;
  • are engaged in an economic activity as their main occupation;
  • invest in solar photovoltaic power plants; and
  • meet the general conditions that apply in this matter.

Businesses in difficulty are not eligible.

Luxinnovation is the preferred contact point for businesses, and assists them in their administrative procedures. Luxinnovation can be contacted at the following email address: aides@luxinnovation.lu.

Deadlines

The first consumption of electricity produced by the plant must take place within 18 months after the aid is granted. If this time limit cannot be met for duly justified reasons beyond the company's control, more time may be granted upon written request to the ministers.

The call for projects with a maximum budget of EUR 17 million, divided into 3 lots, in open from 19 July to 17 October 2025 (12.00 CET).

How to proceed

Allowable costs

Investments related to the installation of the plant.

Operating costs and costs involved in complying with legal, regulatory or administrative requirements in force are not eligible.

The allowable costs do not include taxes or other deductions. The list of allowable costs is as follows:

  • purchase and installation of electrical equipment (photovoltaic modules, inverters, junction boxes, cabling, etc.);
  • purchase of the structural elements supporting the modules;
  • engineering and development costs;
  • setting up the connection (connection costs, transformer, civil engineering works);
  • acquisition of the storage system and related installation costs (the useful storage capacity, expressed in relation to the power of the photovoltaic power plant, is greater than or equal to 1 kWh per kWp).

Competition and project selection

For each sublot, tenders received within the deadline and not eliminated under the provisions set out in the tender specifications are ranked:

  • by increasing weighted reference aid amount Ar (specified in the application form - the lowest amount of aid per installed capacity (EUR/kWp);
  • in case of equal weighted reference aid amount, by ascending power output;
  • in case of equal weighted reference aid amount and power output, by a lottery between the ex-aequo application files.

The weighted reference aid amount (in €/kWp) is obtained by multiplying the reference aid amount Ar by a weighting factor that takes into account the size of the photovoltaic installation.

For each sublot, tenders are selected in ascending order of the ranking established by the method described above, until the last tender chosen allows to exactly reach the maximum amount of aid for the sublot under consideration. If the maximum amount of aid is exceeded for the sublot concerned, the last eligible tender that led to the maximum amount being exceeded is removed and the award process is stopped.

In case of under-subscription of sublot(s), a competitiveness clause is provided for, as well as a transfer of unallocated amounts. The competitiveness clause implies that no more than 90% of the admissible projects presented in the context of the call for projects may be selected. If the number of projects submitted is less than 10, at least 1 project will be rejected.

Submitting the application

The application for aid is to be submitted using the online assistant available on MyGuichet.lu.

You or your agent will need to have a LuxTrust product or an electronic identity card (eID).

The application must be filed before the commencement of the work.

How to create a business eSpace on MyGuichet.lu

There are 2 possible scenarios:

  1. You are a new user of MyGuichet.lu. You must:
    • first register on MyGuichet.lu; and
    • then create a business eSpace.
  2. You already have a private eSpace on MyGuichet.lu. You can directly create a business eSpace without having to register again.

Further information as well as tutorials in relation with the business eSpace are available in our dedicated help page.

Supporting documents

Applications for aid must include the following information and documents:

  • an organisation chart allowing for the identification of the company and the group (single economic entity) to which the company belongs, forms providing information on the size of the company and possibly the company's statutes;
  • the official annual accounts of the applicant company and related companies (or consolidated group accounts);
  • a bank account identification document;
  • a CCSS certificate stating the number of employees;
  • a certificate of right of use of the installation site;
  • a project description and simplified business plan (excel template provided) ;
  • a quote.

Additional documents may be required in particular:

  • if the site where the power plant is installed is a 'ZAE site' (article 2.2. of the specifications);
  • if the plant is a roof-mounted plant with 'light' modules (article 2.2.1. of the specifications).

As of now, beneficiaries of selected projects with a capacity of more than 500 kW will be required to provide a financial performance guarantee (see articles 6.2. and 7.3. of the specifications).

The ministries can request information on the contractual relations between the parties involved in order to ascertain the need for the aid.

Maximum amount of financial aid

Maximum amounts of aid (lot 1)
Lot 1 (building rooftops; economic activity areas (ZAE sites)) Maximum amounts of aid in €/kWp  
Power category Sublot 1a (without storage) Sublot 1b (with storage)
> 30 kWp and ≤ 200 kWp 610 790
> 200 kWp and ≤ 500 kWp 490 640
> 500 kWp and ≤ 3 MWp 395 515
Maximum amounts of aid (lot 2)
Lot 2 (innovative: modules placed on facades, light modules on building rooftops) Maximum amounts of aid in €/kWp  
Power category Sublot 2a (without storage) Sublot 2b (with storage)
> 30 kWp and ≤ 200 kWp 845 1025
> 200 kWp and ≤ 500 kWp 685 835
> 500 kWp and ≤ 2 MWp 550 670
Maximum amounts of aid (lot 3)
Lot 3 (shade structures) Maximum amounts of aid in €/kWp  
Power category Sublot 3a (without storage) Sublot 3b (with storage)
> 30 kWp and ≤ 200 kWp 1100 1280
> 200 kWp and ≤ 500 kWp 1030 1180
> 500 kWp and ≤ 1 MWp 915 1035
> 1 MWp and ≤ 3 MWp 825 945

No group (single economic entity) may receive aid for one or more projects in an amount exceeding 40% of the budget per lot.

Calendrier pluriannuel indicatif

Sans préjudice d’autres appels d’offres spécifiques à lancer éventuellement, le ministère de l’Économie publie par la présente un calendrier pluriannuel indicatif des futurs appels d’offres en relation avec l’aide à l’investissement et l'aide au fonctionnement  :

Volumes par période de candidature
Période de candidature Aide à l’investissement :
Volumes escomptés		   Aide au fonctionnement :
Volumes à soumissionner		 Volume total nécessaire
2026       min. 70MW
16.2. - 17.4. Puissance
30-200 kW		      
1.7. - 30.9.

Toutes catégories de puissance

 30-40 MW*    
1.7. – 30.10.     40-50 MW  
2027       min. 70MW
4.1. – 31.3. 30-200 kW      
1.7. - 30.9. Toutes catégories 30-40 MW*    
1.7. – 29.10.     40-50 MW  
2028       min. 70MW
3.1. – 31.3. 30-200 kW      
3.7. - 29.9. Toutes catégories 30-40 MW*    
3.7. – 31.10.     40-50 MW  

*selon budget disponible. Volume escompté = volume produit à l'aide d'une puissance 30-200 kW + volume produit à l'aide de toutes les catégories de puissance. Selon les résultats successifs des appels d’offres, cette répartition pourrait être adaptée.

Online services and forms

Online services

Financial aid application for companies

Other language(s)

Downloadable forms

Description du projet modèles Excel

Last update 27.09.2024

ZIP2.25 Mb

Who to contact

Related procedures and links

Links

Further information

Legal references

Loi modifiée du 15 décembre 2017

relative à un régime d’aides à la protection de l’environnement

Your opinion matters to us

Tell us what you think of this page. You can leave us your feedback on how to improve this page. You will not receive a reply to your feedback. Please use the contact form for any specific questions you might have.

Fields marked with an asterisk (*) are mandatory.

Did you find what you were looking for?*
How would you rate this page?*
Very poor
Very good

Leave a comment to help us improve this page. Do not provide any personal information such as your email address, name, telephone number, etc.

0/1000

Please rate this page

Your opinion has been submitted successfully!

Thank you for your contribution. If you need help or have any questions, please use the contact form.

Would you like to help us make digital public services more user-friendly by submitting your suggestions for improvement?

Then visit Zesumme Vereinfachen, the online participation platform dedicated to administrative simplification in Luxembourg.

Let's simplify things together

An error occurred

Oops, an error has occurred.