Trans Austria Gas Pipeline

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This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor.

Trans Austria Gas Pipeline (TAG) is an operating natural gas pipeline system that transports Russian natural gas from the Slovakia-Austria border to Italy, Slovenia, and Croatia as well as into and across Austria.[1]


The pipeline runs from the Baumgarten natural gas hub in northeastern Austria near Baumgarten an der March to the Austrian - Italian border near Arnoldstein.[2][3]

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Project Details

  • Operator: Trans Austria Gasleitung GmbH
  • Owner: Trans Austria Gasleitung GmbH
  • Parent companies: Snam S.p.A. (84.47%), Gas Connect Austria GmbH (15.53%)[4]
  • Current capacity: 44.3 billion cubic meters per year
  • Length: 383 kilometers
  • Status: Operating
  • Start Year: 1974

Reverse Flow Project

The "TAG Reverse Flow" was commissioned in 2020. The European Network of Transmission System Operators for Gas (ENTSOG) 2020 Ten Year Network Development Plan (TYNDP) refers to the project with the code TRA-F-954.[5]


Natural gas began flowing through the TAG pipeline in 1974, and the system has been continuously expanded since then. In 1988 TAG II was commissioned and the TAG Loop 2 was put into operation in order to increase transmission capacity.[4]


The 383-km TAG delivers Russian gas south from the Baumgarten gas hub to Arnoldstein on the border between Austria and Italy. The Trans Austrian gas pipeline supplies Austria, as well as Croatia, Italy and Slovenia. TAG is operated by Austrian transmission system operator Trans Austria Gasleitung GmbH. The pipeline maintains a capacity of 44.3bn cu m/year, and is the largest gas pipeline in Austria.[6]


The pipeline is owned by TAG GmbH (Trans Austria Gasleitung GmbH). In 2011, Italian multinational Eni S.p.A. sold its 89% stake in TAG GmbH to CDP (Cassa depositi e prestiti S.p.A.) following a ruling by the European Antitrust Commission.[7] CDP in turn sold its majority stake to Italian infrastructure company Snam S.p.A. in 2014.[8] Since 2015, Snam S.p.A. has owned 84.47% of TAG GmbH, with the Austrian company Gas Connect Austria GmbH (controlled 51% by OMV, 29.4% by Allianz, and 19.6% by Snam) holding the remaining 15.53%.[4][6][9] In March 2020, OMV announced its intention to sell its 51% stake in Gas Connect Austria GmbH.[10]


In December 2017, an explosion and fire that erupted at Austria’s main natural gas hub in Baumgarten near the Austria-Slovakia border killed one person and injured 21 others, prompting Italy to declare a state of emergency as flows from the strategic site were cut off for most of the day.[11]

Articles and resources


  1. Tag Pipeline System, TAG, accessed April, 2018
  2. "Our network in detail: Gas Connect". Retrieved 2020-09-23.
  3. European Network of Transmission System Operators for Gas (October 2020). "TYNDP 2020 - MAP – Transmission" (PDF). ENTSOG. Retrieved December 4, 2020.{{cite web}}: CS1 maint: url-status (link)
  4. 4.0 4.1 4.2 TAG GmbH, TAG GmbH, accessed April, 2018
  5. Ziegenhagen, Linus (2020-09-15). "Analysis of Promoters' ­Submissions — ENTSOG TYNDP 2020" (in Deutsch). Retrieved 2020-12-01. {{cite web}}: soft hyphen character in |title= at position 24 (help)
  6. 6.0 6.1 Fact Sheet, Gas Connect, October 5, 2020
  7. "Eni sells stake in TAG pipeline". World Pipelines. June 13, 2011.{{cite web}}: CS1 maint: url-status (link)
  8. "Snam acquista il gasdotto Tag da Cdp, porta in Italia il metano dalla Russia". La Repubblica. September 12, 2014.{{cite web}}: CS1 maint: url-status (link)
  9. "Trans-Austria gas pipeline, TAG to be in charge of the commercial dispatch". Snam. June 29, 2015. Retrieved 2020-10-05.{{cite web}}: CS1 maint: url-status (link)
  10. "OMV plans the sale of its shares in Gas Connect Austria". OMV. March 12, 2020.{{cite web}}: CS1 maint: url-status (link)
  11. Deadly blast at Austrian pipeline hub slashes gas flow to Italy, Reuters, April 2018

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External resources

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