The environmental control system (ECS) of an aircraft is a significant consumer of power among non-propulsive systems and is responsible for maintaining a safe environment for both the cabin crew and avionics. This study introduces an electric compressor-driven energy-efficient ECS (EECS) for an existing Airbus 330 (A330) conventional engine-bleed airdriven ECS. The ECS component model was constructed utilizing MATLAB, and its accuracy was validated through the use of data from the A330. A comparison was subsequently made between the predicted performance of the proposed system and the current cabin requirements. The proposed electric compressor-driven system has shown significant improvements in terms of fuel efficiency and performance. Compared to traditional systems, it can reduce the total fuel energy consumption rate by 51.21% and increase the coefficient of performance from 0.27 to 0.48 during cruising. This analysis showed that an electric compressor-driven system provides good fuel savings. The implementation of the water-spraying effect improves the efficiency of the ECS by lowering the temperature of the ram air inlet, resulting in enhanced performance of the secondary heat exchanger. This systemlevel design approach is effective in conserving energy for systems with multiple inputs and outputs, such as the ECS.