Fig. 10 shows the site on Izmir map.
The total cost, for this scenario, changes according to the length
of the transmission line. This cost is sum of operation cost and investment cost [32]. Operation costs of the grid system are the electricity consumption fee and the maintenance costs. Sum of
the transformer and transformer pile, power panel, separator, project
development costs are considered as the fixed cost whereas
the pile, conductive wire, insulator, grounding, and labor costs
are considered as the variable cost in the initial investment cost.
The fixed cost is calculated for 50 kV A power demand in the case
study. The cost values are obtained from the Turkish Chamber of
Electrical Engineers and Turkish State of Electric Distribution. Grid
line components and their costs are given in Table 7.
Total cost of the extension of transmission line case is yielded as