Soler Celebrates 25 Years of Renewable Energy innovation

Luxembourg-based renewable energy company, Soler, celebrated 25 years of innovation and partnership in renewable energy development in Luxembourg on Thursday 17 September 2026, with an event at its headquarters in Luxembourg-Cents.

The evening event welcomed Grand Duke Guillaume, Luxembourg’s Prime Minister Luc Frieden, Minister of the Economy, SMEs, Energy and Tourism Lex Delles, Minister for the Environment, Climate and Biodiversity Serge Wilmes, and Mayor of the City of Luxembourg Lydie Polfer.

Since its creation in 2001, Soler (Société luxembourgeoise des énergies renouvelables) has contributed to the development of renewable energy in Luxembourg. On the occasion of its 25th anniversary, the company looks back on a quarter-century marked by the development of wind power, the integration of projects into local communities, and a constant commitment to innovation. 

Of the 77 wind turbines in the country today, 59 are operated by the company, across eighteen wind farms, three hydropower plants and one agrivoltaic installation. With an installed capacity of 220.38 MW and estimated annual production of 432 GWh, its facilities now generate the equivalent of the annual electricity consumption of 96,071 households, or 384,284 people, in Luxembourg. Since 2016, 26 first-generation wind turbines have been replaced by fewer but significantly more efficient installations.

“When Soler was founded in 2001, a wind turbine of that generation produced enough electricity to supply around 780 households. Today, a latest-generation turbine supplies nearly 4,800. The same production, with six times fewer installations. That is what technological progress means in concrete terms,” explained Guy Uhres, Head of Renewable Energies at Soler.

While wind power is the main pillar of its activities, Soler is also exploring new ways to develop renewable energy, systematically doing so through partnerships.

In Eschdorf, a 6 MW wind turbine developed as a joint venture with SEBES provides a concrete example of this model. SEBES treats half of the country’s drinking water, making continuity of this service a critical issue. The distinctive feature of this project lies in its dual security. Under normal operating conditions, the wind turbine supplies the SEBES site directly for water treatment. In the event of a nationwide total blackout, the supply remains guaranteed.

In Kehlen, the ECHO-WAVE project embodies Soler’s vision for energy innovation. Developed in partnership with GPSS and the first Luxembourg project to receive support from the European Innovation Fund, ECHO-WAVE benefits from €12.96 million in European funding, supplemented by national funding from the Ministry of the Economy under the national pilot tender for green hydrogen production. The electricity produced by these two sources will be fed directly, without passing through the public grid, into a 2.5 MW PEM electrolyser — the first of its kind in Luxembourg — which will produce green hydrogen on site. Any surplus electricity not used for electrolysis will be fed back into the grid and shared locally through an energy community.

“There is still a great deal to do. And we want to approach what lies ahead in the same way we have from the very beginning: together. As Camille Eilenbecker, then mayor of the former municipality of Hengischt, used to say: ‘Maacht et zesummen.’ With ambition. With courage. And with enthusiasm for what is to come,”concluded Paul Zeimet, Managing Director of Soler.