Abstarct: Due to population growth, electrical energy is consumed more and more in the industry and households. This energy is mostly generated by using fossil fuels which creates greenhouse gases and other pollutions. To reduce the environment pollution, it is necessary to use other techniques including more efficient system, combined power cycle, renewable energy or a combination of these techniques. In the current study, a hybrid Organic Rankine Cycle (ORC) and Closed Brayton Cycle (CBC) is proposed to convert medium temperature heat into electrical energy. The proposed cycle includes the CBC with Helium as the working fluid, the ORC with operating fluid R123 and the Absorption Refrigeration Cycle (ARC) to recover the waste CBC heat. The proposed hybrid cycle is examined from the perspective of the first and second laws of thermodynamics. The results showed that the ARC has a high impact on the exergy efficiency of the system. Also, the exergy efficiency of the power cycle has been found about 60% while the exergy efficiency of the overall power plant was about 25%. The proposed cycle performed better than previous studied cycles such as system which has two Rankine cycles with a similar condition. By analyzing the exergy economic of the power plant, we find that the total exergy economic factor and the average cost per unit of exergy of the total product for the power plant at 850 w⁄m^2 radiation intensity and 3 pressure ratio are 83.8% and 48.33 ($⁄GJ), respectively.