- Compressor station
Compresses gas to the desired pressure and injects it back into the network.
Can be coupled with an interconnection station.
- Delivery station
Performs a relief role to lower the pressure of gas delivered to industrial facilities and local distribution networks; also regulates flow and performs metering.
- Gas pipeline
Transports natural gas over long distances under high pressure.
- Interface with LNG terminals
Injects pressurised regasified natural gas into the transmission network; performs flow regulation and metering roles.
- Interface with underground storage facilities
Manages and meters inputs and outputs of natural gas between the transmission network and underground storage facilities.
- Interconnection station
Connects several gas pipelines and allows gas to be sent in different directions.
- North Zone, South Zone
These are defined geographical areas. In each of these, the shippers must balance the natural gas input and output flows every day.
- Title transfer point (PEG)
These are virtual points for gas trading between shippers on the transmission network. GRTgaz has two: one in each North and South balancing zone.