With the growth in onboard electrification referred to the movement of the More Electric Aircraft, or MEA, and constant improvement in ECO standards, aircraft electricity load has continued to soar.The airline and authors have discussed the nature of future aircraft systems in the next two decades, which envisages the further More Electric Aircraft or the All-Electric Aircraft, or AEA, concept helping provide some effective aviation improvements. The operators, pilots and maintenance crews anticipate improved operability, ease of maintenance and fuel saving, while meetings depends for high reliability and safety by electrification. As part of initial progress, the authors approach the methodology of energy management for aircraft systems.This study proposes some system options from three elements involving improvements to total energy management of several onboard systems, namely the environment control system, flight-control system, engine control system, landing gear system and electric power system. These elements comprise the fuel-saving potential of subsystems, power management and electrical supply reliability. We must obtain significant benefits due to our full efforts to optimize the weight of units as well as making them cost-effective. Accordingly, the More Electric Architecture for Aircraft and Propulsion (MEAAP) must emerge as a viable solution for improved performance and eco-friendly aircraft operations.