SGI (Società Gasdotti Italia) offers the service of transportation of natural gas through a pipeline network of high pressure for a length of about 1,600 km.

SGI was born December 27, 2004 from the merger of the Company Edison T & S SpA and its subsidiary SGM S.p.A. .

From 15 September 2016 the company is owned by Sole Holdings Sarl in Luxembourg, which is ultimately owned by Macquarie European Infrastructure Fund 4 and Swiss Life GIO II EUR Holding.