THE DISTRIBUTED GENERATIONS (DG'S) HAVE BEEN DEVELOPED FOR MANY REASONS SUCH AS: POWER SYSTEM RESTRUCTURING, LOAD GROWTH INCREASING AND NEW TECHNOLOGIES OF GENERATION. MICRO TURBINE IS ONE OF THE MOST DISTRIBUTED GENERATIONS THAT ARE ENCOURAGED BECAUSE OF DIVERSITY OF FUELS, LOW DENSITY AND LOW NOISY. IN THIS PAPER, THE ECONOMIC EVALUATION OF MICRO TURBINES HAS BEEN CONSIDERED FOR SOME KIND OF CUSTOMER SIDE APPLICATION SUCH AS RESIDENTIAL, INDUSTRIAL, COMMERCIAL AND AGRICULTURAL. THIS ECONOMIC EVALUATION HAS BEEN IMPLEMENTED BY INTERSECTION OF TWO COSTS. FIRST AVOIDED COST OF POWER AND ENERGY PURCHASED FROM EACH CUSTOMERS AND SECOND LEVELIZED ENERGY COST OF MICRO-TURBINE ARE USED FOR THIS EVALUATION. AT THE END OF PAPER, THE RESULTS OF ECONOMIC CAPACITY OF MICRO-TURBINE FOR EACH TYPE OF CUSTOMERS HAVE BEEN SHOWN.