The gas interconnector between Bulgaria and Romania is expected to be completed and go into operation by the end of March, Bulgartransgaz said.
Once the underwater section is completed, the gas interconnector can go into operation, the company said.
Construction works of the underwater section of the gas interconnector have been delayed due to technical problems related to the geological characteristics of the area under the Danube river, Bulgartransgaz, which, in partnership with Romanian gas transmission company Transgaz, is implementing the project, said.
The pipeline on the Bulgarian territory was also delayed due to unexpected circumstances and was completed in August last year, the company added.
The 25-kilometre pipeline links under the Danube river the southern Romanian village of Comasca with Marten, in northern Bulgaria. The project includes the construction of a 15 kilometre pipeline in Bulgaria, another 7.5 kilometres in Romania and a 2.5 underwater section.
The maximum design capacity of the pipeline is 1.5 billion cubic metres a year, Bulgartransgaz noted.