In the transportation of hydrocarbons sector, Eni owns the company Oléoduc du Rhone SA, which operates a gas pipeline that from Ferrera Erbognone in Italy, crossing Piedmont and Valle d'Aosta, enters the Valais region of Switzerland through the Great St Bernard Tunnel. It is 257 km long and has a capacity of 1.1 million barrels a year.

Eni Suisse SA was founded in Lugano in 1959 and currently has 79 employees. Its activities developed initially in the Ticino area and then spread progressively throughout Switzerland. The registered office has been in Lausanne since1962. The company has 79 employees.

The presence of Eni Suisse is of significant strategic importance for the country since it offers an alternative supply, thanks to the refineries in Northern Italy and Germany. Eni Suisse has importation structures in Basel and Geneva, the latter in particular being supplied by the Eni refineries in the Mediterranean by means of the SPRM and SAPPRO gas pipelines, of which it is a shareholder. Besides this, Eni Suisse owns two storage depots in Stabio (TI) and Sennwald (SG), and also has a share in TAR (ZH). This integrated system of supplies and logistics has enabled Eni Suisse to develop its own competitive sales channels. The strength of the network is due to its 280 service stations, 99 of which are directly owned. In more than 100 service stations there are large shops where the customer is projected into the atmosphere of the "Eni shop" and its characteristic "Italian style". The market share is over 8%, but reaches around 30% in the Ticino area. Eni Suisse has two cards “AgipPLUS” (for private customers) and “Multicard-Routex”, as a payment card. The wholesale activity supplies fuel, heating oil, bitumen and LPG with total sales of 450 ktonnes. Its location near the airports of Zurich and Geneva is of vital importance.