Société Electrique de l'Our SA is a Luxembourg-based renewable electricity generation and energy storage utility company that develops, owns, and operates hydroelectric, wind, and solar power facilities. Founded in 1951 and headquartered in Luxembourg City, Luxembourg, the company specializes in peak-load energy generation, large-scale energy storage, and grid stabilization services for the Central European power market. Société Electrique de l'Our operates through three core business segments: Hydroelectric Power Generation and Energy Storage, Wind Energy, and Solar Photovoltaic Generation. The company's flagship asset is the Vianden Pumped-Storage Power Plant located on the Our River in northeastern Luxembourg, which represents one of the largest pumped-storage hydroelectric facilities in Western Europe with an installed capacity of approximately 1,300 megawatts across 11 turbine units. The company's core product and service offerings comprise pumped-storage hydroelectric power generation; run-of-river hydroelectric electricity production along the Moselle River; onshore wind energy generation developed and operated through its Soler S.A. joint venture; utility-scale ground-mounted and floating solar photovoltaic power generation; fast-reacting grid balancing and ancillary services, including primary, secondary, and tertiary frequency regulation; peak-load power supply; and black-start and reactive power grid support for transmission system operators across Luxembourg, Germany, and neighboring European power markets. In recent operational and strategic developments, Société Electrique de l'Our has advanced comprehensive modernization, digitization, and turbine overhaul programs at the Vianden pumped-storage facility to enhance operational flexibility, optimize cycle efficiency, and support the integration of intermittent renewable energy sources into the European transmission network. Through Soler S.A., its joint venture with Enovos Luxembourg, the company has expanded its onshore wind portfolio via repowering initiatives and the commissioning of new high-capacity wind turbine installations across Luxembourg. Additionally, the company has accelerated the rollout of utility-scale floating photovoltaic systems on its reservoir surfaces and hybrid solar installations to enhance clean power output and advance regional decarbonization initiatives.