Yes, Norway has high-voltage distribution systems that connect the transmission grid to regional and local networks, with voltages ranging from 33 kV up to 132 kV.

Overview of Norway's Electricity Grid

Norway's electricity grid is organized into three main levels: the transmission grid, the regional distribution grid, and the local distribution grid. The transmission grid, operated by Statnett, carries very high voltages, typically 300–420 kV, and in some areas 132 kV, connecting large producers to major consumers and interconnectors with neighboring countries like Sweden and Finland . The regional distribution grid serves as a bridge between the high-voltage transmission network and local distribution networks. It carries voltages from 33 kV to 132 kV and may include production and consumption radials that handle higher voltages for industrial or regional needs . This level of the grid includes high-voltage distribution boxes and substations that step down electricity from transmission levels to voltages suitable for local distribution.

Local Distribution and High-Voltage Segments

The local distribution grid supplies electricity to households, small businesses, and smaller industrial users. It carries voltages up to 22 kV, which is divided into high-voltage (above 1 kV) and low-voltage (below 1 kV) segments. High-voltage distribution boxes at this level manage the step-down process from regional voltages to the standard 400 V or 230 V used by ordinary consumers . The total length of Norway's high-voltage distribution network is approximately 101,000 km, highlighting the extensive infrastructure in place .

Function and Importance

High-voltage distribution boxes and substations in Norway are essential for:

• Stepping down voltage from transmission or regional levels to local distribution levels.
• Ensuring reliable power supply to industrial, commercial, and residential users.
• Integrating renewable energy sources and smaller-scale producers into the grid. Major industrial consumers, such as petroleum facilities or large manufacturing plants, are typically connected to the transmission or regional distribution grid, while households and small businesses rely on the local distribution network . In summary, Norway not only has high-voltage transmission lines but also a well-developed high-voltage distribution system with substations and distribution boxes that manage electricity flow from regional grids to local consumers.