This map represents a schematic of the interconnected transmission grid of Bulgaria. The information is derived from publications of UCTE/entso-e and other public data. The relative concentration of transmission capacity in the center and west can be seen on the map. This is juxtaposed to the concentration of the wind energy capacity that has been installed (mainly in the North-Eastern part of Bulgaria along the sea coast). For a more detailed view, click on the map.
The owner of the electricity transmission grid in Bulgaria is the National Electricity Company EAD (NEK). You can find out more about NEK here. The activities of NEK are to be divided in the near future, so that the company focuses only on production of electricity. The operation of the transmission grid is to be transfered to the Electricity System Operator EAD (ESO). You can find out more about ESO here.
By 2011 the total length of the electricity transmission grid in Bulgaria is 15 213 km with the following structure:
Overhead transmission lines
- 400 kV with total length of 2451 km
- 220 kV with total length of 2805 km
- 110 kV with total length of 9957 km
- 32 HV/HV substations with total transformer capacity of 15 888 MVA
- 257 HV/MV substations with total transformer capacity of 15 243 MVA
- One 400 kV switching station
- One 110 kV switching station
Optic fibre network with total length of 3020 km.