Tecnimont is a leading engineering, procurement and construction (EPC) company operating worldwide in the areas of chemicals, petrochemicals, oil and gas, power and other sectors of the process plant industry. It is part of the Montedison Group, which was established in 1966 and a result of the merger of Montecatini (existing since 1888) and Edison (existing since 1884), two major names in the Italian chemicals, fertilisers, petrochemicals and energy industries. In 1973,Tecnimont was established as a spin-off of the Engineering division of Montedison. Over these few years, it had inherited extensive experience and capabilities from its founders, Montedison, and earlier Montecatini and Edison.

The Maire Group acquired Tecnimont in October 2005.The newly formed Group, named Maire Tecnimont S.p.A., has marked a substantial step in the development of the Italian engineering and contracting industry.The acquisition had a synergetic effect as it brought together formidable assets of engineering and management expertise of international level, thus enlarging its range of activities and business sectors.

Today the company has more than 2,100 employees, 28 subsidiaries, branch offices and representative offices, spread all over the most strategic countries. Engineering activities are carried out mainly from its Milan Headquarters. Other important companies belonging to it are the Paris-based Sofregaz, which specialises in natural gas, the Indian engineering and construction company Tecnimont ICB, and two centres at Brindisi (Italy) and Salzgitter (Germany), which are involved in the polymers sector.