The transmission network is generally operated at 380 or 220 kV and serves three main tasks:

• It is the backbone of the electricity supply nationwide
• Transmission of electricity over greater distances
• Energy exchange with neighboring cross-border regions

Axpo AG owns almost 25% of the transmission network in Switzerland, which means that it possesses the following (construction status as at 30 September 2009):

• 1998 km of dedicated lines
• rights to third-party lines

Furthermore, two dedicated and five party substations serve as nodal points in the transmission network.