24/7 emergency number in case of problems: (+352) 55 66 55 66 or (+352) 24 66 16 11

Sustainability at SUDenergie

SUDenergie is continuing its development – guided by a sense of reason and responsibility towards customers and the public, shareholders and partners, as well as towards the environment.
As a responsible player in the energy market, SUDenergie has been increasingly committed to actively promoting the energy transition since 2015.

The three pillars of sustainability


Environmental factor

In addition to investments in renewable energy projects, we support energy-saving projects – both to reduce our company’s consumption as well as to motivate our customers to save energy at home via bonus programmes and to raise awareness of the issue.

Since launching in 2015, we have already supported more than 4,500 projects. The combined impact of all these measures is equivalent to the amount of electricity that 23,000 households consume in one year.

However, we are convinced that our commitment to the environment and climate change has to start with ourselves. That is why we run our company entirely on electricity produced from renewable sources. Furthermore, we have been awarded the SuperDrecksKëscht® label for the sustainable use of resources since 2008.

More information

Learn more about the sustainability methodology we apply in our report entitled “Contribution towards the UN Sustainability Development Goals (UN SDGs)”.

100% renewable electricity

All the electricity SUDenergie consumes is produced from renewable sources according to the official electricity label.


Social responsibility

As a traditional company in Luxembourg and because the people of Luxembourg are important to us, we want to give back to society. We support regional cultural and sports associations and events, are actively involved in protecting the environment, offer training opportunities and have created student flats.


Corporate management and structure

At SUDenergie, our greatest asset is people, whether they are our employees, our customers or our partners. Working and communicating on an equal footing, treating people equally and putting the interests of the many above those of the few come second nature for us. Transparency, honesty and accountability – both inside and outside our company – have won us the trust of nearly 38,000 customers and 81 employees for more than 120 years.

We promote renewable energies

Local sustainable energy projects

As a conscientious energy supplier in Luxembourg, our investments in local renewable solar and wind power are the reflection of our commitment to greater sustainability.

Let’s make progress together!

In close cooperation with our 14 shareholder municipalities, we invest in a more sustainable future. Our partner municipalities are Esch-sur-Alzette, Differdange, Pétange, Schifflange, Sanem, Käerjeng, Bettembourg, Kayl, Rumelange, Mondercange, Roeser, Reckange, Dippach and Garnich.

Furthermore, SUDenergie is always open to new partnerships with additional municipalities. With its many years of experience as an energy supplier and now as a developer of renewable energy projects, SUDenergie is a reliable partner for your projects.

Advancing the energy transition in Luxembourg

Photovoltaic projects

Development of photovoltaic projects

In recent years, SUDenergie has installed numerous small to medium-sized photovoltaic systems as well as implemented several industry projects. Doing so has allowed us to gain experience over the past few years, which SUDenergie is happy to share. SUDenergie offers you several support options so that you, too, can have a photovoltaic project that contributes to clean energy.


As the owner, you can rent your roof to SUDenergie (min. required surface: 200 m2). This business model includes the investment and management of the PV system by SUDenergie. You will receive annual rental payments. In addition to the rent, you can take over the PV system at the end of the contract period, becoming the owner of the installation.


SUDenergie also offers PV citizen participation programmes. This is a way for you to invest in a PV installation by becoming a shareholder in the citizen participation company. Even if you cannot install PV panels on your own roof, you can still invest in solar energy. Both the environmental benefit and the economic return are guaranteed in this business model.


We look forward to hearing from you if you would like to learn more about photovoltaics:
Email: ps@sudenergie.lu
Tel: (+352) 55 66 55 302

Wind power projects

Regional wind energy

In 2018, SUDenergie founded SUDWAND S.A., in which it holds a 60% share. SUDWAND is responsible for developing wind power projects in SUDenergie’s shareholder municipalities. The construction of two wind turbine installations with an estimated annual energy production of 15.3 million kWh is planned for 2021. This is equivalent to an average annual consumption of about 4,800 households (about 14,400 people).


Some simple tips with great effect
How to reduce your gas consumption…
Adjustment of gas tariffs
Adjustment of our “Classic” gas tariff…
Doing good with waste
SUDenergie donates € 2,000 euros each to…