Overhead power lines are a cornerstone of modern electrical grids due to several key advantages:

• Cost-Effectiveness: The most significant advantage is the lower initial capital expenditure. overhead lines are considerably cheaper to install than underground cables, primarily because they require less civil work (e.g., trenching, tunneling) and use less expensive materials for insulation.

• Ease of Maintenance and Repair: When a fault occurs, it is relatively straightforward to locate and access the damaged section of an overhead line. This allows for quick inspections, repairs, and restoration of service, minimizing downtime.

• Effective Heat Dissipation: Overhead lines are exposed to the open air, which allows them to efficiently dissipate heat generated by the electrical current. This enables them to carry higher loads without overheating, making them suitable for high-voltage, long-distance transmission.