Investment aid for the construction and operation of solar photovoltaic power plants following a call for tenders
Last update
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 3 million; and
- is open from 16 February to 17 April 2026 (12.00 CET).
Applications for investment aid must be submitted via the MyGuichet.lu platform. The specifications can be found here (French, Pdf, 451 Kb). An FAQ (French, Pdf, 350 Kb) is also available.
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.
All applicant companies are requested to contact either Luxinnovation (aides@luxinnovation.lu), the Chamber of Skilled Trades and Crafts (ehandwierk@cdm.lu) or the House of Sustainability (sustainability@cc.lu) in order to receive assistance with the administrative procedures before submitting their aid application.
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 3 million, divided into 3 lots, is open from 16 February to 17 April 2026 (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);
- purchase of the storage device and related installation costs.
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 reference aid amount Ar (provided in the application form);
- 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.
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:
- You are a new user of MyGuichet.lu. You must:
- first register on MyGuichet.lu; and
- then create a business eSpace.
- 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 description of the project (Excel template provided)
- quote for the construction of the power plant/cost estimate.
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).
The minister 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
| 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 |
| 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 |
| 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 |
No group (single economic entity) may receive aid for one or more projects in an amount exceeding 40% of the budget per lot.
Indicative multi-annual timetable
Without prejudice to other specific calls for tenders that may be launched, the Ministry of the Economy hereby publishes an indicative multi-year schedule for the two calls for tenders relating to investment aid and operating aid (market premium contract):
| Project allocation year | Total volume required (in MW) | Call for tenders using operating aid: volumes to be tendered (in MW) | Tenders using investment aid: expected volumes (in MW) |
|---|---|---|---|
| 2026 | min. 70 | 40-50 | 30-40* |
| 2027 | min. 70 | 40-50 | 30-40* |
| 2028 | min. 70 | 40-50 | 30-40* |
* depending on the available budget. Depending on the successive results of the calls for tenders, this breakdown could be adjusted.
Online services and forms
Online services
Downloadable forms
Who to contact
Luxinnovation Aid
- Address:
- 5, avenue des Hauts-Fourneaux L-4362 Esch-sur-Alzette
- Phone:
- (+352) 43 62 63 1
- Website:
- http://www.luxinnovation.lu
Chamber of Skilled Trades and Crafts eHandwierk services
- Address:
-
2, circuit de la foire internationale
L-1347
Luxembourg-Kirchberg
Luxembourg
B.P. 1604, L-1016
- Phone:
- (+352) 42 67 67 505
- Email address:
- ehandwierk@cdm.lu
- Website:
- https://www.cdm.lu/
Chamber of Commerce House of Sustainability
- Address:
- 14, rue Erasme L-1468 Luxembourg
- Phone:
- (+352) 42 39 39 450
- Email address:
- sustainability@cc.lu
Klima-Agence
- Address:
- 2, circuit de la Foire Internationale L-1347 Luxembourg Luxembourg
- Phone:
- (+352) 80 02 11 90
- Email address:
- info@klima-agence.lu
- Website:
- http://www.klima-agence.lu
Related procedures and links
Links
Further information
-
Foire aux questions - Aide à l'investissement
Pdf • 350 Kb
-
Cahier des charges du 5e appel d'offres
Pdf • 451 Kb
-
Résultat du premier appel d’offres Photovoltaïque 2023
Pdf • 566 Kb
-
Résultat du 2e appel d’offres Photovoltaïque du 15 juillet 2023
Pdf • 233 Kb
-
Résultat du 3e appel d’offres Photovoltaïque du 19 juillet 2024
Pdf • 252 Kb
-
Résultat du 4e appel d'offres spécifique autoconsommation (aide à l'investissement)
Pdf • 289 Kb
Legal references
ayant pour objet le renouvellement du régime d’aides à la protection de l’environnement et du climat
