In a process plant where there is a simultaneous demand for power and process heat, cogeneration or combined heat and power (CHP) is an attractive means of meeting the energy needs of industry, and it can contribute significantly to the efficient use of energy. The objective of this paper is to investigate many aspects of the present implementation of CHP systems in Turkey, giving private energy investment models. Cogeneration has played, or will play, a significant and increasing role in dictating the energy strategies for Turkey, with plans to satisfy a considerable portion of Turkey's requirements for electricity from cogeneration.