Ellaktor S.A. is a diversified conglomerate operating through its various subsidiaries, with a significant presence in Greece, across numerous European nations, in the Gulf region, the Americas, and Australia. Its multifaceted activities are structured into five primary segments: Construction, Concessions, Renewable Energy Sources (RES), Environmental Services, and Real Estate Development. In its construction capacity, Ellaktor undertakes a broad spectrum of large-scale infrastructure and building projects. This includes the development of vital transportation networks such as bridges, highways, metro systems, railways, tunnels, and port facilities. The company also constructs critical public utilities like biological treatment plants, natural gas pipelines, dams, and energy generation facilities. Furthermore, it is proficient in erecting various commercial and institutional structures, including refineries, shopping malls, casinos, hotels, cultural venues, hospitals, airports, Olympic and athletic complexes, alongside logistics hubs, office spaces, residential complexes, industrial facilities, and educational institutions. Within its environmental segment, Ellaktor provides comprehensive solutions for waste management and the generation of energy from waste. This encompasses the design, construction, and ongoing operation of advanced waste treatment facilities, as well as initiatives for producing alternative fuels and harnessing biomass resources. The firm actively participates in the renewable energy sector by developing, building, and managing wind power installations. Its real estate division focuses on developing diverse properties, including retail parks, entertainment venues, residential communities, exhibition centers, and various office and mixed-use complexes. This division also extends consultancy and other related services to external clients. Previously known as ELLINIKI TECHNODOMIKI TEB SA, the company adopted the name Ellaktor S.A. in 2008. Its corporate headquarters are located in Athens, Greece.