This thesis thoroughly explores electrical networks, covering generation, transmission, and distribution. It examines both traditional and eco-friendly energy sources, emphasizing their impact on the power system. The transmission system's critical role is highlighted, considering power lines and substations, while special techniques analyze electricity movement. Addressing the delivery system, the study clarifies how lower-power electricity reaches homes, marking the endpoint of the power grid. Overall, it offers a simplified yet insightful perspective on the intricate dynamics of electricity systems in the context of increasing renewable energy integration.