Under French law, even in the event of exceptionally cold conditions, as may occur every 50 years, the transmission system must be able to meet peak consumer demand.

The law defines this concept of exceptionally cold conditions as follows: Currently, these temperatures, as calculated from previous winters, are around -1.5 °C on average across France, with a minimum of -18.1 °C and a maximum of -1 °C, depending on the location.

Gas pipelines are marked on the ground level by yellow panels and an easement strip of 5 to 20 m that must remain visible and unobstructed by surrounding vegetation or construction.

It makes it possible for the gas network to accept biomethane, which can be produced by anaerobic digestion using household waste, biomass or sewage from purification plants.

GRTgaz also invested in power to gas conversion, which makes it possible both to use surplus renewable electricity and recycle industrial CO2 emissions.