Técnicas Reunidas, S.A., an engineering and construction company, designs and manages industrial plant projects worldwide.

It operates through Oil and Gas, Power, and Other Industries segments.

The Oil and Gas segment offers engineering, procurement, and construction services in oil processing operations, and chemical production and processing operations; services related to the natural gas production and extraction value chain, such as production, processing, storage, and transportation; constructs, revamps, and expands refining plants; designs and builds auxiliary services and other refining units; and designs and constructs monomers, polymers and plastics, chemical, and fertilizer producing and processing plants.

The Power segment provides consulting, engineering, procurement, and construction services for a range of electricity generating plants comprising conventional thermal plants, combined cycle power plants, gasification integrated plants with combined cycle, nuclear plants, co-generators, solar plants, fuel cells, solid waste plants, and biomass technology plants, as well as plant operation and maintenance services; and supplies turnkey plants.

The Other Industries segment undertakes projects in various areas that include airports, industrial facilities, and desalination and water treatment plants, as well as projects for public authorities and other organizations, including management of car parks and sports centers.

Técnicas Reunidas, S.A. is also involved in the real estate development, commercial development, and machinery wholesale business; and technical assistance, construction supervision, project management, technical management, and start-up and training activities.

The company was formerly known as Lummus Española, S.A. and changed its name to Técnicas Reunidas, S.A. in 1972.

Técnicas Reunidas, S.A. was incorporated in 1960 and is based in Madrid, Spain.