Investments and network development


In the period 2017-2021 Snam will invest 5 billion euro, of which 4.7 billion for plans in Italy, aimed to:

  • increased flexibility and security of the system
  • ongoing improvements to the quality of the service
  • increased interconnection between infrastructures and greater flexibility of gas flows in Europe


Of the 4.7 billion euros, 4.1 billion are destined for transport and CNG. In particular, around 1.4 billion are devoted to development initiatives:

  • the completion of reverse flow infrastructure
  • the completion of interconnection with TAP (55 km of pipeline to connect TAP from its landing point to existing Snam infrastructure)
  • the roll-out of 300 CNG filling stations

Over the period in question, the planned investments should allow the Company to extend the total length of the transportation network (32.508 km in 2016) by around 1% and to increase the installed power in the compression stations by around 5% (approximately 922 MW in 2016).

In addition, 1.7 billion euros are devoted to gas pipeline maintenance, 800 million to replacement and over 200 million for innovation and the adoption of new technologies to increase network efficiency (remote monitoring of pipelines, Real-time detection of dispersion, enhanced platform of technology that supports network maintenance and network maintenance activities).

According with this strategy, in October Snam has completed the acquisition of 100% of the issued share capital of Infrastrutture Trasporto Gas S.p.A. (ITG) and a 7.3% quota of the capital of Terminale GNL Adriatico S.r.l. (Adriatic LNG) from Edison, after verification of the conditions precedent for finalising the transaction. The total consideration of the transaction is equal to 225 mln euro.


Support to the North West market and bidirectional cross-border flows

Snam’s project, "Support to the North West market and bidirectional cross-border flows", will be concluded in 2018. The project consists of infrastructure projects that will extend the national transport network by approximately 450 km and will increase the installed power in compressor stations by over 90 MW. A project that is transforming Italy from a country of consumption to a country of gas transit, at the centre of European corridors: from 2018 bidirectional flow to the Italian border will make available 40 million cubic meters of gas per day in exports from the north, amounting to about 13 billion cubic meters of gas per year. The project has involved 190 suppliers and 2.800 people (Snam and suppliers).



  • Increase the flexibility of the national transport network in the Po Valley to support the market in the North West
  • Ensure continuity of supply in case of a continuous lack of imports from the north and emergency situations
  • Strengthen the interconnector infrastructure with Europe, creating a network that can handle the exchange and bi-directionality of flows and to support the policy of diversifying sources of supply


First phase (completed in 2015):

  • 372 km of networks
  • Upgrade of the plants of Istrana (Treviso) and Masera (Verbano-Cusio-Ossola)

Second phase (to be completed in 2018):

  • 80 km of networks
  • Strengthen the Poggio Renatico compressor station (Ferrara)
  • Construction of two new plants in Sergnano (Cremona) and Minerbio (Bologna).

Development scenarios and strategies: regional investment plans

In the context of the regional cooperation of transmission system operators established by Article 12 of the REGULATION (EC) 715/2009*, Snam Rete Gas publishes within this section the Gas Regional Investment Plans (GRIPs) to which contributed as co-author.

* “Transmission system operators shall establish regional cooperation within the ENTSO for Gas to contribute to the tasks referred to in Article 8(1), (2) and (3). In particular, they shall publish a regional investment plan every two years, and may take investment decisions based on that regional investment plan”.


South-North corridor

2017 ENTSOG Press Release
2017 GRIP SNC Report
2014-2023 ENTSOG Press Release
2014-2023 GRIP SNC Report
2012-2021 GRIP SNC Report
2012-2021 ENTSOG Press Release


Southern corridor

2017 Entsog Press Release
2017-2026 Main Report
2017-2026 Annex A (Country Profiles)
2017-2026 Annex B (Project information)
2017-2026 Annex C (Annex data)
2014-2023 Main Report
2014-2023 Annex A (Country/TSO Profiles)
2014-2023 Annex B (Infrastructure Projects)
2014-2023 Annex C (Demand Data)
2012-2021 Main Report
2012-2021 Annex A
2012-2021 Annex B

Gas storage

The investment plan of 0.6 billion euro for the 2017-2021 period is aimed at improve the overall flexibility and security of the system, will deliver an increase in available storage capacity (12.0 billion standard cubic metres in 2016) of about 7% over the period in question and an increase of around 8% in peak capacity (238 million standard cubic metres per day in 2016). It also provides to invest in maintenance and safety measures for safeguarding resources and improving quality.

The projects will focus on the further development of Fiume Treste storage site (Chieti) with the upgrade to a new pressure.

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08 March 2018 - 11:34 CET