Electrotransport EAD is a joint-stock company managed by its Board of Directors, through its Executive Director. The following units are included in the structures of  Electrotransport EAD: Central Department, three tram depots, two trolley depots and the "Transenergo" Department.

In 1998, "Tram Transport", "Trolley Transport" and "Transenergo" merged in a joint-stock company. The composition of Electrotransport EAD includes three tram depots: "Banishora", "Krasna Polyana" and "Iskar", two trolley depots: "Iskar" and "Nadezhda" including the "Levski" station. 

“Transenergo and Railway Track” is a separate department under SKGT “Electrotransport” AD. It is responsible for the power supply: Converting substations, as well as the Catenary System and the Cable networks.

Daily Electrotransport EAD carries more than 506 000 passengers and it is a basic transport operator in the center of the city of Sofia.

As of January 2007, daily 176 trams and 102 trolley-buses, distributed in 17 tram and 9 trolley lines run around 48 165 km., linking the various regions of the capital.

The power supply of the electric transport in Sofia is delivered by 24 converting substations, with a total installed capacity of 125950 kW, with more than 73 rectifying aggregates and more than 440 terminal fields. 

The overhead network exceeds 263 km - tram and 257 trolley, and the cable network is more than 740 km.