The main transmission pipeline with total length 512km and design pressure 70 barg extends from the Greek-Bulgarian border at Promachonas to Attica.
Transmission branches with total length 947 km extend from the main transmission pipeline and supply natural gas to the regions of Eastern Macedonia, Thrace, Thessaloniki, Platy, Volos, Trikala, Oinofyta, Antikyra, Aliveri, Korinthos, Megalopoli, Thisvi and Attica.
The project includes also the construction of the necessary high pressure stations along the route of the pipeline.