In compliance with the aim of ensuring maximum contribution to the national economy in the general energy policy of our country and carrying out its activities according to efficiency and profitability principles TEMSAN Electromechanical Industry Inc  was established  with the decree of the Council of Ministers numbered 7/10907 in 1975 and began its activities by organizing in 1977 

With the establishment of the General Directorate of State Hydraulic Works (DSI) in 1954, the installation of hydroelectric power plants started and the need for a specialized institution was  arisen for the construction, supply of equipment and installation services of these plants  which increased in time. TEMSAN  providing service to Public Institutions for many years added the private sector to its customer portfolio after the publication of the legislation on privatization of water  rights in 2001.