KIEV, Dec. 2 – Ukraine’s gas transport system (GTS) has deteriorated severely, with low levels of efficiency of operation of gas pumping units at compressor stations, and the estimated size of investment for its upgrade and reconstruction is $2.57 billion.

"At present, around 70% of the total pipelines and around 80% of the gas pumping units of compressor stations have worked for over 20 years. The technical state of underground gas storage facilities, which were used since the start of gas pumping them from 20 to 44 years, are not in line with requirements for their exploitation," reads a cabinet resolution published Tuesday.