Techno-economic Analysis of Rehabilitating and Repowering of Thermal Power Plants in Iran

Making targeted subsidies and the process of releasing energy market and specified criteria for the quality of energy delivered to consumers shows the necessity for the explanation of energy production in Iran. In the meantime, thermal power plants produce about 85% of electricity in Iran. Steam and gas turbine power plants have created the vast capacity of power generation in thermal plants, but the significant portion of this generated power is not in the sense of new energy policy. Therefore, the reconstructing and improvement of thermal power plants has undeniable importance. In this paper, considering two major methods in reconstructing thermal power plants, eligible power plants are presented. Results are discussed according to important economic parameters like electricity generation costs, capital return rate, cost benefit, annual interest, etc. Further, estimation of changes in target plants in terms of technical and economic characteristics has an effective role in our decisions, i.e. changes are affected by the features of current plants and their potentials. The efficacy of reconstructing average efficiency, capacity, and electricity generation costs can be the effective parameters in future management decisions.