Bulgaria – Serbia intersystem gas connection

Contracting Authority:

Bulgartransgaz EAD



Gas pipeline with a starting point in the area of ​​the town of Novi Iskar and an end point at the Bulgarian-Serbian border.

The route of the transmission gas pipeline passes through the following regions and municipalities:

  1. Sofia district city:

– Sofia Municipality – the town of Novi Iskar, Sofia – Trebich, Mirovyane, Mramor, Dobroslavtsi and Zhiten;

2. Sofia district:

– Municipality of Kostinbrod – Golyanovtsi, Dragovishtitsa, Kostinbrod and Petarch;

– Municipality of Bozhurishte – Hrabarsko;

– Slivnitsa municipality – Slivnitsa , Galabovtsi, Aldomirovtsi, Bratushkovo and Burlozhnitsa;

– Dragoman Municipality – Dragoman, Chukovezer, Dragoil, Chorul, Vladislavtsi, Novo Burdo and the village of Kalotina;


Period of implementation:
2022 – 2023


Glavbolgarstroy’s role in the project:
Prime contractor


Nature of works:

Construction and commissioning of the Bulgaria-Serbia Intersystem Gas Connection (IBS) on Bulgarian territory, including: supplies of materials and equipment, execution of construction and installation activities and commissioning of gas pipeline with a length of 62 km., “Slivnitsa” gas measuring station, “Dragoman” gas measuring station, treatment facility and “Kalotina” gas measuring station, “Novi Iskar” treatment facility .