This study presents an energy-efficient cloud data center architecture concept for Bangladesh’s National Data Center. To reduce energy consumption and operational expenses, the model employs virtualization and load-balancing techniques, as well as renewable energy sources. The simulation results demon- strate that the model may drastically cut energy usage while maintaining high levels of performance and dependability. This research contributes to the worldwide challenge of climate change by offering a long-term solution for reducing the environmental effect of cloud data centers while maintaining the quality of cloud computing services.