The Norwegian electricity network is made up of three main categories: transmission (central), regional and local distribution:
- the transmission network (400kV-132kV)
- the regional distribution network (132kV-33kV)
- the local distribution network (22kV-240V)
Statnett is the only Transmission System Operator (TSO) and responsible for the transmission tariffs.
There are 146 network companies that own and operate regional distribution and/or distribution networks. Some also own minor parts of the transmission network.