Why doesn’t Great River Energy bury transmission lines?
Long-distance underground transmission lines are not practical because they are less reliable and because of the high costs involved. These costs are substantially higher than overhead lines because of the differences in the necessary equipment and materials. In addition, failures in underground lines require more time to locate and repair. Although special circumstances, such as airports, may require underground lines for short distances, transmission lines will continue to be built above ground until a more practical and economical method of underground construction and maintenance is developed.
