Generation stations, transmission lines and distributions

- Generation stations 11kV/220kV 

- Transmission lines  22kV/22kV    

- Distributions 22kV/220V                

Generation station generates step up transformer to transmission lines 765,500,345,230 and 138 kV and then substation step down transformer to subtransmission customers 24kV and 4kV , primary customer 13kV and 4kV and secondary customer 120 V and 240 V .