DESFA

DESFA, formally the National Natural Gas System Operator S.A., is the company responsible for operating, maintaining, and developing Greece's national natural-gas transmission system. Its infrastructure includes high-pressure transmission pipelines, compressor stations, metering and regulation facilities, and the Revithoussa liquefied natural gas terminal. DESFA also operates gas distribution networks in Greece, giving it a role that extends beyond long-distance transportation to the wider management of the country's gas infrastructure. The company was established on 30 March 2007 as a subsidiary of DEPA, Greece's public gas utility. Its creation reflected the separation of transmission-system operations from other parts of the gas business and the development of a more independent infrastructure operator within the Greek and European energy markets. DESFA's operational role is closely connected to security of supply: it receives gas from domestic and international sources, transports it through the national system, manages the entry and exit of gas, and supports the integration of LNG and cross-border pipeline flows. DESFA became a major target of Greece's privatisation programme. In June 2013, Azerbaijan's SOCAR won a tender to acquire a 66% stake for €400 million. The proposed transaction encountered changing ownership conditions after the 2015 Greek legislative election, when the stake offered was reduced to 49%. The transaction was not completed, and in November 2016 SOCAR's final offer was rejected. The Hellenic Republic Asset Development Fund subsequently launched a new tender in March 2017 under revised eligibility conditions. The restructuring process concluded in December 2018, when Senfluga S.A. completed the acquisition of 66% of DESFA for €535 million. Senfluga was initially formed by Snam, Enagás, and Fluxys. Later shareholder information identified the consortium as including Snam, Enagás, Fluxys, and the Greek energy company DAMCO, while the Hellenic Republic retained 33%. Snam is the largest participant in the consortium and provides the company with a link to one of Europe's major gas-infrastructure groups. DESFA's development agenda has increasingly emphasized regional interconnection, capacity expansion, LNG infrastructure, and compatibility with the potential future transport of hydrogen. Its Ten-Year Development Plan for 2023–2032 described approximately €1.27 billion in planned investments. Among the projects identified was a 215-kilometre duplication of the YP Karperi–Komotini pipeline branch, designed with hydrogen compatibility in mind, as well as measures to increase transmission capacity and facilitate gas flows toward Southeast and Central Europe. In April 2025, DESFA and North Macedonia's state-owned NOMAGAS signed a memorandum of understanding concerning the Greece–North Macedonia Interconnector. The proposed 123-kilometre high-pressure pipeline would include 55 kilometres in Greece and 68 kilometres in North Macedonia. It is intended to create an additional regional supply route and to allow future hydrogen transport. The project was reported as being targeted for commissioning in the first half of 2026. DESFA therefore occupies a strategic position in Greece's energy system while also participating in the broader effort to connect Southeast European gas markets and prepare infrastructure for lower-carbon gases.

DESFA was established on 30 March 2007 as a subsidiary of DEPA to serve as Greece's natural-gas transmission-system operator. Its formation was part of the institutional separation of gas-network operations from other activities in the gas sector. DESFA assumed responsibility for the national high-pressure transmission system, related network assets, and the operation of the Revithoussa LNG terminal. It also became involved in the operation of Greece's gas distribution networks. The company later became central to Greece's privatisation programme. In June 2013, Azerbaijan's SOCAR won a tender for a 66% stake, with the proposed purchase price reported at €400 million. The transaction was affected by political and regulatory developments after the January 2015 Greek legislative election. The stake under offer was reduced to 49%, and the deal, which had been expected to close during 2015, remained unresolved. In November 2016, SOCAR's last offer was rejected. The Hellenic Republic Asset Development Fund then issued a new tender on 1 March 2017 with revised eligibility requirements, formally ending the earlier process. A replacement transaction was completed on 20 December 2018. Senfluga S.A., a consortium initially consisting of Snam, Enagás, and Fluxys, acquired 66% of DESFA for €535 million. Subsequent shareholder information identified the consortium as including DAMCO, a Greek energy company, alongside the three original international infrastructure groups. The Greek state retained 33%. Through this ownership structure, DESFA became linked to Snam's wider European gas-transmission network while continuing to perform its regulated national-system role in Greece. DESFA's more recent development priorities have focused on increasing capacity, improving resilience, expanding regional connections, and integrating different sources of gas supply. In February 2023, the company published a Ten-Year Development Plan covering 2023–2032 and identifying approximately €1.27 billion in investment. The plan included a 215-kilometre duplication of the YP Karperi–Komotini pipeline branch, designed to be compatible with future hydrogen transportation, together with projects intended to support gas movements toward Southeast and Central Europe. Regional cooperation expanded in April 2025, when DESFA and North Macedonia's state-owned NOMAGAS signed a memorandum of understanding for the Greece–North Macedonia Interconnector. The proposed project comprises 123 kilometres of high-pressure pipeline, divided between 55 kilometres in Greece and 68 kilometres in North Macedonia. It is intended to create an additional supply route for natural gas and to accommodate hydrogen transport in the future. The project was reported as scheduled for commissioning in the first half of 2026. DESFA's history thus combines the creation of a national transmission operator, a prolonged and ultimately completed privatisation process, and a continuing shift toward regional interconnection and infrastructure that can support the energy transition.

• 2025

  Greece–North Macedonia interconnector cooperation begins

  [1]DESFAen.wikipedia.org

  DESFA and NOMAGAS signed an MoU for the proposed Greece–North Macedonia Interconnector.

• 2023

  Ten-Year Development Plan is published

  [1]DESFAen.wikipedia.org

  DESFA published its 2023–2032 development plan, describing approximately €1.27 billion in planned investment.

• 2018

  Senfluga completes the majority acquisition

  [1]DESFAen.wikipedia.org

  Senfluga S.A. completed the purchase of 66% of DESFA for €535 million on 20 December 2018.

• 2017

  New privatisation tender is launched

  [1]DESFAen.wikipedia.org

  The Hellenic Republic Asset Development Fund launched a new tender on 1 March 2017 under updated eligibility conditions.

• 2016

  Original SOCAR transaction ends

  [1]DESFAen.wikipedia.org

  SOCAR's final offer was rejected in November 2016 after the proposed stake had been reduced to 49%.

• 2013

  SOCAR wins the privatisation tender

  [1]DESFAen.wikipedia.org

  Azerbaijani company SOCAR was selected to acquire a 66% stake in DESFA for €400 million.

• 2007

  DESFA is established

  [1]DESFAen.wikipedia.org

  DESFA was established on 30 March 2007 as a subsidiary of DEPA to operate Greece's natural-gas transmission system.

National energy-infrastructure operator focused on gas transmission, supply security, LNG access, regional interconnection, and the gradual adaptation of gas infrastructure for hydrogen transport.

• Natural-gas transmission infrastructure · 2007

  Greek National Natural Gas Transmission System

  DESFA operates and maintains Greece's high-pressure natural-gas transmission network. The system includes pipelines, compressor stations, metering and regulation facilities, and other assets used to receive, transport, balance, and deliver gas to connected users and networks. Its operation supports national supply security and provides the physical platform for domestic and cross-border gas flows.

• LNG infrastructure

  Revithoussa LNG Terminal

  The Revithoussa LNG terminal is part of DESFA's infrastructure portfolio. It enables liquefied natural gas to enter the Greek gas system after regasification, diversifying supply sources and complementing pipeline imports. The terminal contributes to the flexibility and resilience of the national transmission system.

• Energy network services · 2007

  Gas network access and transmission services

  DESFA provides access and transmission services associated with Greece's gas system, including the management of flows through the national network. These services support shippers, gas suppliers, distribution networks, and large consumers that use the regulated transmission infrastructure.

• Cross-border gas infrastructure · 2025

  Greece–North Macedonia Interconnector

  The proposed interconnector is a 123-kilometre high-pressure pipeline project being developed through cooperation between DESFA and North Macedonia's NOMAGAS. The route is planned to include 55 kilometres in Greece and 68 kilometres in North Macedonia. It is intended to add a regional natural-gas supply route and to be suitable for future hydrogen transport.

• 2025

  Memorandum for the Greece–North Macedonia InterconnectorStrategy

  Background

  DESFA and NOMAGAS sought to improve regional gas connectivity and create infrastructure that could accommodate future hydrogen transport.

  Action taken

  The companies signed an MoU covering a proposed 123-kilometre high-pressure pipeline, with sections in both Greece and North Macedonia.

  Aftermath

  The project was reported as targeting commissioning in the first half of 2026, subject to development and implementation.

  Source

• 2023

  Approval and publication of the 2023–2032 development programmeStrategy

  Background

  DESFA assessed the need to expand transmission capacity, strengthen regional gas connectivity, and prepare selected infrastructure for potential hydrogen transport.

  Action taken

  The company published a Ten-Year Development Plan covering infrastructure investment of approximately €1.27 billion, including pipeline duplication and capacity-enhancement projects.

  Aftermath

  The plan established a long-term framework for network expansion and stronger gas flows toward Southeast and Central Europe.

  Planned infrastructure investment. Approximately €1.27 billion (2023–2032 plan)

  Source

• 2018

  Sale of a 66% stake to SenflugaM&A

  Background

  Following the failed SOCAR process, Greece conducted a replacement tender for majority ownership of DESFA.

  Action taken

  Senfluga S.A., initially composed of Snam, Enagás, and Fluxys, completed the acquisition of 66% of DESFA on 20 December 2018.

  Aftermath

  The consortium became the controlling shareholder, while the Hellenic Republic retained a 33% stake.

  Acquisition price. €535 million (20 December 2018)

  Source

• 2017

  Launch of a replacement privatisation tenderM&A

  Background

  The earlier SOCAR transaction had not been completed, and the Hellenic Republic Asset Development Fund revised the conditions for a new sale process.

  Action taken

  A new tender for the DESFA stake was issued on 1 March 2017.

  Aftermath

  The process resulted in the later selection of Senfluga S.A. as the successful consortium.

  Source

• 2013

  Selection of SOCAR as preferred buyerM&A

  Background

  Greece pursued the privatisation of a majority stake in DESFA, and SOCAR won the tender in June 2013.

  Action taken

  The proposed transaction covered 66% of DESFA for €400 million.

  Aftermath

  The stake offered was later reduced to 49%, and SOCAR's final offer was rejected in November 2016.

  Proposed acquisition price. €400 million (2013 tender)

  Source

1. 1DESFAen.wikipedia.org
2. 2DESFA official websitedesfa.gr