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Whole world is suffering from the problem of the energy crisis. This is happening because of the enormous growth of population and industries across the globe. Therefore the whole world is looking to adopt the concepts of green communication technologies and power/energy efficient devices. This work is just towards these technologies. In this work, a power-efficient Control Unit (CU) is designed and implemented on Kintex-7 Ultrascale FPGA. The simulation and power analysis of the control unit is done on VIVADO HLx Design Suite. The power analysis of control unit is observed for different frequency values and it is observed that as the frequency increases the total power consumption also increases. Hence the control unit is more suitable to operate at low frequency values in order to minimize the power consumption. Also, there is a 36% saving in total power consumption when we scale down the device operating frequency of the control unit from 5 GHz to 100 MHz.