The story of ENKA power generation began when InterGen-ENKA, a 40%-60% partnership between ENKA and InterGen established in 1997, was contracted by the General Directorate of Turkish Electricity (TEAŞ) and the Ministry of Energy and Natural Resources to carry out the turnkey construction and operation of three natural gas combined cycle power plants in Gebze, Adapazarı and Izmir with a total installed capacity of 4,000 MW. The plants were constructed in accordance with the Build-Own-Operate (BOO) model.
The turnkey construction of the Gebze, Adapazarı and Izmir natural gas combined cycle power plants was awarded to the Bechtel-ENKA Joint Venture (BEJV), in which ENKA had a 50% share. The projects were launched in 2000. The Gebze and Adapazarı plants were commissioned in 2002 and the Izmir plant in 2003. Thus ENKA, became the largest private sector electricity producer in Turkey.