Ellaktor S.A. is a Greek-based international holding group specializing in construction, concessions, renewable energy, environment, and real estate development. It operates across five key business segments: Construction and Quarries, which form the core of its activities involving infrastructure projects like bridges, motorways, metro systems, tunnels, dams, airports, hospitals, and energy facilities; Concessions, focusing on participation in major public-private partnership projects; Renewable Energy Sources, primarily developing and operating wind farms; Environment, handling waste management, treatment plants, alternative fuel production, and biomass exploitation; and Real Estate Development & Services, encompassing retail parks, residential complexes, offices, entertainment centers, and consultancy services. The company constructs a diverse range of projects including biological treatment plants, natural gas pipelines, refineries, shopping centers, casinos, hotels, cultural centers, Olympic complexes, railways, ports, and electromechanical installations. Ellaktor S.A. serves markets in Greece, over 25 countries worldwide, including Europe, the Gulf region, the Americas, and Australia, positioning it as a significant player in the engineering and construction sector within industrials. Headquartered in Athens, Greece.