Elecnor SA engages in engineering, development, and construction of infrastructure in the fields of energy, the environment, technology and information systems and space. It operates through the following segments: Infrastructure, Concessions, and Corporate. The Infrastructure segment execute engineering, construction, and services projects, most notably in the electricity, power generation, gas, telecommunications and systems, railways, maintenance, facilities, construction, water, environment, and space sectors. The Concessions segment focuses in the operation of services through investment in energy transportation, wind and solar thermal power, and other strategic assets. The company was established on June 6, 1958 and is headquartered in Madrid, Spain.