Société Electrique de l'Our

About Société Electrique de l'Our

The Société Electrique de l’Our (SEO) stands for sustainable energy and innovative solutions in Luxembourg and Europe. In Vianden, we operate one of the most powerful pumped-storage power plants in Europe – a key for grid stability and security of supply in the European high-voltage grid. With our own and co-owned run-of-river power plants in Luxembourg, Germany, and France, we rely on efficient and environmentally friendly electricity generation from hydropower. Through solar, we promote wind power production and shape an independent, sustainable energy supply for future generations. TOGETHER CONNECTED In close partnership with other players in the energy industry, we shape a stable and sustainable supply network – reliable, efficient, and future-proof. FLEXIBLE FOR THE FUTURE Storing energy when it is abundant. Providing it when it is needed. The pumped-storage power plant actively supports the energy transition.