Self-consumption: using the energy you produce

Become a prosumer

The energy transition involves us all. To make your contribution, you can produce your own solar energy and use it directly! Find out how to become a prosumer by opting for self-consumption when installing your photovoltaic installation.

The development of technology in recent years has made it possible for you to install photovoltaic panels at home and produce some of the electricity you need on a daily basis. This environmentally friendly solution – known as self-consumption – is also economical, as it allows you to reduce your electricity invoice, while selling the exceeding electricity to your supplier.

Self-consumption mode (installation < 30 kWp)

Self-consumption mode (installation < 30 kWp)

How it works

  • You consume part of the energy produced yourself.
  • You feed the remaining production into the grid.

You have two options. Make sure you make your choice before connecting the installation to the grid.

Option 1 guaranteed feed-in tariff*

  • Subsidy: 20% of the investment cost (max. 500€ per kWp)
  • Guaranteed feed-in tariff* by Grand-Ducal regulation of 12 April 2019
  • Fixed tariff for 15 years from the day the installation is operational

What you need to do

  • Submit your application to the grid operator
  • Sign a contract for the guaranteed feed-in tariff with the grid operator

Option 2 guaranteed feed-in tariff*

  • Subsidy: 62.5% of the investment cost (max. 1,562.50€ per kWp)
  • Flexible feed-in tariff** by an energy supplier
  • Flexible tariff with variable contract duration

What you need to do

  • Submit your application to the grid operator
  • Sign a contract for the guaranteed feed-in tariff with an energy provider

Caution: once you have opted for the variable feed-in tariff, you cannot change to the guaranteed feed-in tariff.

Option 1 guaranteed feed-in tariff*

  • Subsidy: 20% of the investment cost (max. 500€ per kWp)
  • Guaranteed feed-in tariff* by Grand-Ducal regulation of 12 April 2019
  • Fixed tariff for 15 years from the day the installation is operational

What you need to do

  • Submit your application to the grid operator
  • Sign a contract for the guaranteed feed-in tariff with the grid operator

Option 2 guaranteed feed-in tariff*

  • Subsidy: 62.5% of the investment cost (max. 1,562.50€ per kWp)
  • Flexible feed-in tariff** by an energy supplier
  • Flexible tariff with variable contract duration

What you need to do

  • Submit your application to the grid operator
  • Sign a contract for the guaranteed feed-in tariff with an energy provider

Caution: once you have opted for the variable feed-in tariff, you cannot change to the guaranteed feed-in tariff.

* State-guaranteed feed-in tariff: This feed-in tariff (for the residual or total electricity production fed into the grid) is a tariff regulated by the Grand-Ducal regulation of 12 April 2019 in the framework of the Compensation Mechanism. This tariff is fixed and guaranteed for a period of 15 years and depends on the date of activation of the electricity production installation.

** Flexible feed-in tariff with a selected supplier: This feed-in tariff (for the residual or total electricity production fed into the grid) is a flexible tariff offered by a supplier of your choice, often based on variable wholesale energy market prices. The duration of the contract depends on the agreement with your selected supplier.

Self-consumption, total or partial

If you decide to opt for self-consumption, the first thing to do is to inform your grid operator.

You will also have to decide whether you want to use all of the electricity you produce, without feeding the surplus back into the grid, or whether you want to consume only part of the energy produced, feeding the surplus back into the grid. The answer to this question will have tax implications, as the income from the resale of the electricity produced will be taxed (for installations with a capacity of more than 10 KWp).

Between 15 and 30% of the energy produced is self-consumed

If self-consumption is a solution for the future, which allows you to gain independence from the variations in energy market prices, you should know that it is estimated that between 15 and 30% of the energy produced is actually used in your home. The rest of this energy generally has to be fed back into the grid.

This is simply because the time of energy production does not always correspond to the times when the family is at home and consumes the most energy.

Variable “Klimabonus” support depending on the choice of tariff model

Producing your own electricity is made even easier by the fact that the Klimabonus programme provides a range of investment grants for this type of project.

If you want to install photovoltaic panels at your home with the aim of consuming the energy produced yourself, you can benefit from “Klimabonus” financial aid

This can cover 20% or 62.5% of the cost of the installation, depending on whether you decide to opt for the guaranteed feed-in tariff for the resale of your electricity to the grid:

  • Option 1: 20% of the investment, if you opt for the state-guaranteed feed-in tariff for 15 years (upper limit of €500/KWp);
  • Option 2: 62.5% of the investment, if you opt for a variable feed-in tariff based on wholesale market prices from a supplier instead of the guaranteed feed-in tariff. (upper limit of €1,562.50/kWp).

This applies to installations for which the invoice is issued by 31 December 2025 at the latest.

If you choose option 2, the maximum amount of aid is 62.5% of the actual costs for investments in solar photovoltaic installations operated in self-consumption mode or as part of an energy community, provided that the order is placed in 2023 and the invoice is drawn up before 31 December 2025.

The application forms for the financial aid will be available on guichet.lu. The aid can be applied for after the installation has been completed.

Good to know

To benefit from this investment aid, the peak electrical power of the installation must not exceed 30 kWp.

If your installation is larger than 30 kWp, you will be taxed on the income from the sale of your electricity.

Good to know

To benefit from this investment aid, the peak electrical power of the installation must not exceed 30 kWp.

If your installation is larger than 30 kWp, you will be taxed on the income from the sale of your electricity.

Choix de votre modèle de tarif pour la rémunération de l’énergie excédentaire injectée dans le réseau

Au-delà de ces éléments pratiques, vous serez aussi amené à opter pour un modèle de tarif d’injection garanti ou variable, que vous choisissiez l’autoconsommation partielle ou l’injection totale.

Option 1

En optant pour le modèle de tarif d’injection garanti, vous profitez d’un tarif d’injection garanti par l’État sur une période de 15 ans. Vous devez conclure un contrat de rachat de l’électricité excédentaire auprès votre gestionnaire de réseau.

Découvrez ci-dessous les tarifs d’injection garantis par l’Etat à venir pour les installations de 0 kWc à 30 kWc.

Tarif d’injection garanti pour une centrale solaire 30-200 kWc (sans la création d’une coopérative)

Puissance (kWc)Tarif 2024 (ct/kWh)Tarif 2025 (ct/kWh)
30-100kWc11,0110,57
100-200 kWc10,6010,18

Option 2

Si vous optez pour le modèle de tarif d’injection variable, vous renoncez au tarif d’injection garanti pour toute la durée de vie de l’installation. Vous devez conclure un contrat de rachat de l’électricité excédentaire avec votre fournisseur. La rémunération correspond à un pourcentage du prix de marché de gros qui varie de façon mensuelle.

NordEnergie vous propose le prix du marché (MW Solar) multiplié par le facteur de correction de 0,8 qui prend en compte les risques liés à la prévision et aux prix de l’énergie d’équilibre.

If you are interested in a tailor-made offer based on market prices, waiving the state-guaranteed injection tariffs, please contact us at centrale.production@nordenergie.lu, specifying and adding the following documents to your request

  • Connection contract for the production facility from the grid operator
  • Grid usage contract from the grid operator

Table of historical values for the variable feed-in tariff (0.8 x MW Solar)

Caution: by opting for the flexible tariff, your remuneration can fluctuate significantly. Market prices are particularly volatile and are not the responsibility of the supplier. As an example, you will find below the average tariffs of the last few years, which are often lower than the guaranteed injection tariffs.

Please note that a photovoltaic installation also entails certain grid-related costs, as you will need a dedicated meter, for example. To see the tariffs of the different grid operators, click here (ILR).

Don’t forget your tax obligations

When you become an electricity producer, you can choose to be subject to VAT (and therefore be able to deduct it for certain operating expenses) or, on the contrary, benefit from the exemption system, if your turnover does not exceed 35,000 per year.

In both cases, you must register for VAT and file an annual VAT return, via MyGuichet for example.

Profits from the production of photovoltaic energy can also be taxed. However, this depends on your installation and the use made of the energy produced (self-consumption or total injection).

  • There is no taxation:
    • if you inject 100% of the electricity produced and you have an installation of less than 30 kWp;
    • if you are self-consuming without injecting the excess energy produced into the grid.
  • A tax is applied :
    • if you inject 100% of the electricity produced or if you have an installation of more than 30 kWp;
    • if you are self-consuming and inject the excess energy, a tax deduction is provided for depending on the level of self-consumption.

As a producer-seller of electricity, you can choose whether or not to be subject to VAT. Please note that according to L.I.R. circular no. 14/2 of June 2023, from January 2023, income from the sale of electricity generated by a photovoltaic installation with a capacity of 30 kWp or less, either individually or collectively, will not be subject to taxation. Above this limit, the operator is required to file an income tax return, and will be subject to taxation.

Photovoltaic installations > 30 kWp

For photovoltaic installations >30kWp, you can opt for one of the following two tariff options:

Option 1: State-guaranteed feed-in tariff

For your information, please find attached the current state-guaranteed feed-in tariffs for 15 years:

Option 2: Flexible feed-in tariff by a supplier (based on market prices)

If you are interested in a tailor-made offer based on market prices, waiving the state-guaranteed injection tariffs, please contact us at centrale.production@nordenergie.lu, specifying and adding the following documents to your request

  • Connection contract for the production facility from the grid operator
  • Grid usage contract from the grid operator

New customer?

You are not yet an NordEnergie customer but you would like to take out a contract? Follow this link.

Already a customer?

Are you already an NordEnergie customer? Take all the necessary steps in your customer area.

New customer?

You are not yet an NordEnergie customer but you would like to take out a contract? Follow this link.

Already a customer?

Are you already an NordEnergie customer? Take all the necessary steps in your customer area.

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How can I find out about my consumption?

If you have a my.enovos.lu account, you can consult the evolution and details of your consumption at any time by going to the “Consumption” tab of the customer portal.

If you do not have an account and you receive your bills in paper format, you will find information on your consumption on the second page, and on the third page the historical evolution of your consumption. This trend is also shown on the statement of account that you receive in paper format once a year.