SNAM RETE GAS TRANSMISSION NETWORK

Snam Rete Gas is the major natural gas transmission and delivery operator across Italy, owning almost all the gas transmission infrastructure in Italy, with over 32,500 km of pipelines in operation at high and medium pressure (representing approximately 93% of the entire transmission system).

Snam Rete Gas manages the gas pipeline network through 8 district offices, 48 maintenance centers, 11 compressor stations (a total of 922 MW) and operates a Dispatching center which had its structure and technology renovated in 2012.

The table below shows the installed length of the pipeline network for each calendar year prior to 2016.

 

TABLE 18: SNAM RETE GAS TRANSPORT NETWORK LENGHT

Data expressed in km 2014 2015 2016 Var. ass.
2016 vs 2015
Var. %
2016 vs 2015
National Grid 9.559 9.630 9.590 -40 -0,4%
Regional Grid 22.780 22.904 22.918 14 0,1%
TOTAL 32.339 32.534 32.508 -26 -0,1%

 

The national transmission network owned by Snam Rete Gas comprises large diameter pipes that transport gas from the entry points of the system (import gas pipelines, LNG regasification plants and the major domestic production centers) to regional transmission network interconnection points and to gas storage facilities.

During 2016, the rationalisation of existing pipelines and the realisation of new pipelines have decreased the extent of the national network of 40 km. The Snam Rete Gas regional transmission network transports natural gas on an inter-regional, regional and local scale to industrial users, power stations and urban distribution networks.

Snam Rete Gas’s interconnections within the transmission network in Italy are guaranteed by 20 connection and switching points (the so called “nodes”) that connect the Snam Rete Gas transmission network with other Italian network operators, and by more than 500 pressure reduction and adjustment stations. These stations regulate the gas flow within the network and ensure continued supply to connected systems operating at different pressures.

 

 

FIGURE 6: SNAM RETE GAS - NETWORK INFRASTRUCTURE
Fig 6 eng

 

The transmission infrastructure includes four coastal terminals that connect the subsea pipelines to the onshore pipelines in Mazara del Vallo (Trapani), Messina, Favazzina (Reggio Calabria) and Palmi (Reggio Calabria).