Techno-Economic Comparisons of HVAC and Simultaneous AC-DC Transmission

Table 3

400 kV double circuit HVAC investment cost

Item	Total cost (USD)
Transmission line cost from Tana Beles to Sululta	255,065,116.51
Tana Beles switchyard upgrading	6,238,633.51
Sululta substation upgrading	13,439,557.28
Total cost	274,743,307.30
Engineering and administration (5% of the total cost)	13,737,165.37
Total project cost	288,480,472.67
Physical contingency (5% of the total cost)	14,424,023.63
Price contingency (10% of the total project cost)	28,848,047.27
Grand total	331,752,543.56