Innovation and Networks Executive Agency


Feasibility Study for the Eastring project
CEF Energy
Call year:
Location of the Action:
Implementation schedule: 
November 2016 to September 2018
Maximum EU contribution: 

eustream, a.s. (Slovakia)

Energy corridor:
Energy sector:
Project(s) of Common Interest:
Executive summary: 

Executive Summary available here.

Additional information: 

European Commission, DG ENER

Agency for the Cooperation of Energy Regulators (ACER)

European Network of Transmission System Operators for Gas (ENTSOG)

Last modified: 
January 2021


This Action was the first step in the implementation of the Project of Common Interest (PCI) 6.25.1 Pipeline system from Bulgaria to Slovakia (currently known as EASTRING), which aims to develop a new bi-directional transmission pipeline system that will interconnect the natural gas transmission networks of Bulgaria, Hungary, Romania and Slovakia.

The objective of the Action was to conduct a Feasibility Study. The study activities covered defining the main technical aspects of the planned interconnections, including the possible routing options, identifying the viability of the project under various scenarios at several implementation stages. Overall, nine routing options were defined and analysed, out of which three final routes were selected and further assessed with a focus on the costs (CAPEX and OPEX), hydraulics and on the potential environmental and social impacts and benefits of the project.

The completion of this Action contributes to the implementation of the PCI 6.25.1 by bringing relevant information on the legal, technical and economic feasibility of the project. The outcome of the Feasibility Study forms the grounds for further basic and detailed engineering works and will contribute to the further decision making process for the PCI 6.25.1.

Action Website: