Chief holding outside Germany
Société Electrique de l'Our S.A. (SEO), Luxembourg (Luxembourg)
Société Électrique de l'Our, SEO for short, operates the Vianden pumped-storage power plant to generate peak electricity. SEO also operates run-of-river power plants and wind farms. The State of Luxembourg and RWE Power are the biggest shareholders in Société Électrique de l'Our, holding 40.3% each.