Given the ever-increasing demand for energy, in particular electricity, on the one hand, and the environmental challenges on the other, the need for moving energy investments to produce clean and environmentally friendly energy becomes more pronounced. So, the Clean Energy production is one of the most strategic investment areas in the present and future. According to the policy of the Teachers Investment Fund Company (TIFCO) on the optimal combination of the portfolio of the fund, it has been stipulated that the share of the power industry in this portfolio to be about 10%. This amount of investment requires the development of a comprehensive and strategic plan to achieve the optimal mix of power plants including gas-fired Distributed Generations (DGs), solar, wind and combined cycle power plants in the period of 5-years.