What is one of the primary disadvantages associated with underground power systems?

One of the primary disadvantages of underground power systems is the challenge associated with finding faults. When a fault occurs in an underground power system, it is not as easily detectable as it is in overhead systems. In overhead lines, faults can often be quickly identified visually, allowing for faster repairs. However, with buried cables, the location of faults must be determined through specialized testing and equipment, which can delay the repair process and increase downtime for customers. Therefore, the complexity and time required to locate faults in underground systems represent a significant disadvantage, making them less desirable in some scenarios.

In contrast, while other factors such as visibility and aesthetics are often cited, they do not directly impact the operational efficiency and responsiveness of the power system in the same way that fault detection does. Visibility, for example, is less of a concern with underground systems because they are hidden, and although reduced aesthetics can be a subjective disadvantage related to their above-ground counterparts, they do not affect the functionality of the energy distribution system itself.