Infrastructure specifications vary due to topography and network voltage. The approximate specifications are:
Dimension of tower base: 16m x 16m for 220kV; 20m x 20m for 500kV
Tower heights: 40m to 60m for 220kV; 60m to 80m for 500kV
Span length: 450m to 550m for both 220kV and 500kV
Pile foundation: diameter ranging from 1.5m to 3m and depth 5m to 20m.
Tower hardstand: 40m x 40m for 220kV; 50m x 50m for 500kV. These areas include the tower base.
Stringing sites:  40m x 40m for both 220kV and 500kV.
Access tracks: 6m wide.
Easement widths:  40m to 60m for 220kV; 70m to 100m for 500kV.