3- Repowering of Thermal Power Plants
Using renewable energies is becoming more and more popular, but fossil fuels are expected to remain
as the main sources of heat and power generation in some countries [34].
Despite the fact that Iran has 9% of the petroleum as well as above 15% of natural gas resources of the
world, the government tends to increase the efficiency and reduce CO2 emissions in fossil fuel power
plants. Thus, the efficiency of many fossil fuel power plants is to be improved over the next few years
[35]. One of the effective ways to do so is to repower the current cycle. Since it is impossible to get
legal permission to establish new plants from the environment conservation organizations in many
countries and some particular urban areas, repowering the previous power plants can be a more
effective choice