In the present study, we investigated the thermal Tabriz power plant with capacity of 368 MW then analyze energy and exergy and thermodynamic models, components that have higher or lower efficiency loss in cycle identified and their need for the optimization of the most introduced. The energy analysis reveals that the condenser and boiler cycles 420.440MW and 146.268MW, respectively, are the highest energy losses. Thorough exergy analysis results indicate that the boiler with 473.861MW, a turbine with 34.534MW and condenser with 16.178MW, the maximum amount allocated to a thorough exergy destruction. Calculation results, the efficiency of the first and second cycles at rated load, respectively, 37.62% and 37.62% shows.