Our transmission network

The Enagás gas pipeline network comprises more than 11,000 km that ensure the correct transmission and supply of natural gas. There are 16 gas pipelines, with a total of 103 sections, distributed throughout the country. 

International connections are the set of infrastructure that connects neighbouring countries with each other in order to exchange energy. Enagás has six international gas supply connection points: two with Africa, two with Portugal and two with France.

The role of this infrastructure is essential to ensure the proper flow of natural gas through our pipelines. From the 19 compressor stations that we manage at Enagás, gas is pumped at the pressure and flow rate necessary for it to properly reach its destination.

Transmission centres are a key part of the Gas System. At Enagás, we have 45 of them, from which we coordinate the maintenance, operation and control of the gas pipeline network.

There are three types of connection points to the Enagás transmission trunk network: transmission pipelines, distribution networks and direct lines.

At Enagás we are responsible for the overall management of these connection points and adhere to the strictest standards. Our goal is to ensure security of supply, compliance with delivery requirements and the correct metering of transported gas flows.

Regulation stations are located at the connections of the gas pipeline trunk network with other operators or end consumers. This infrastructure is the starting point for adapting natural gas to the pressure at which it is used by companies and individuals, which can be as low as 20 millibars.

The purpose of this infrastructure is therefore to reduce and measure the pressure of the gas according to the intended recipient. Enagás currently operates 416 regulation and/or metering stations.