Norway/Norwegian Infrastructure networks

From OpenStreetMap Wiki
Jump to navigation Jump to search
Power transmission lines

This is a subproject of the Norway mapping project where information about the infrastructure network in Norway is collected. Please help by adding more information.


  • Map all electric power distribution (power lines and substations).
  • Map all electric power generators (power plants, wind parks...).
  • Map all major telecommunication cables, i.e. fiber optic cables connecting Norway to the world.*

Tagging conventions

Power lines

  • Power lines are mapped with one of two values. power=line is for all lines above 33kV and power=minor_line for 33kV and below.
  • Most lines in Norway are AC and will have three cables=*.
  • Some lines can have six or more cables=* and will therefore also have multiple circuits=*. There are exceptions where older double circuit lines have been combined to a single using 6 cables.
  • Never create overlapping ways for each line (circuit), but instead add circuits=* and cables=* values.
  • When adding multiple voltage=* values add the separate them with semicolon and order them highest to lowest (example: 100;50;25).


  • Norges vassdrags- og energidirektorat (NVE) data will display multiple circuits on same towers as individual lines.
  • Lines above 300kV often have multiple wires=* per cable. Most commonly two, but some have three. NVE and power companies often refer to them as "duplex" and "triplex". Some 300kV lines have been built with duplex or triplex and some lower voltage lines have been upgraded to be ready for future voltage increases. Finding this information may require surveying.
  • Because of the close proximity of the wires they are prone to collecting more ice and snow during winter. To preempt problems some mountain crossings use a thicker single cable for segments of the power line.

Voltage notes

  • The most common voltages used in Norway are 11kV, 22kV, 33kV, 45kV, 66kV, 132kV, 300kV and 420kV. This may differ between companies.
  • 300kV and 420kV are pretty much the same as 275kV and 380(400)kV in other countries. They are reported as such due to operating at around 295kV and 410kV.
  • NVE will have several different voltage values in their data. It depend on if the reported value is the nominal voltage or the isolation voltage.
  • Common isolation values you might see are 145kV for lines operating at 132kV, 72kV for lines at 66kV and 24kV for lines operating at 22kV.
  • To make things even more complicated some companies operate at odd voltages for parts of their grid:
    • Agder Energi have two regional grids, one 132kV in the east and a 110kV in the west. This is not a tagging mistake.
  • Some lines may be listed 60kV or 50kV. These are simply just 66kV and 45kV lines.

Example of a power line:

name=Frøyset - Mongstad
operator=BKK Nett

Example of extra tags when two lines share towers:


Power pole vs. power tower

Poles are used for power=minor_line (33kV and below). Anything above that will use power=tower
Exception can be done on long 22kV crossings like fjords or valleys where the poles/towers on each side often are as big as regular 66kV or even 132kV towers.

Power plants

Solbergfoss kraftverk

Outline the perimeter of the plant with a closed way. Add power=plant and add all additional relevant tags. Add landuse=industrial to the perimeter unless the plant is underground or limited to a single building. Buildings that are part of the plant are normally tagged building=industrial.

  • Many hydro plants in Norway are located inside mountains. Make sure you add location=underground to these.


name=Nore I kraftstasjon
plant:output:electricity=214 MW

Wind farms

Valsneset wind farm

Tag one node for each generator as in this example:

generator:output:electricity=2.5 MW

Then create a site relation with all generators as members and tag it with power=plant and additional information as in this example:

name=Midtfjellet vindpark
plant:output:electricity=110 MW

Common mistakes

  • Adding the total output of a hydro plant to the each individual turbine.
Each turbine will have its own value that is added to get the total output, so unless there is only one turbine this will be wrong. Finding each turbines specification can require a lot of research as it might not be mentioned on the relevant websites.
  • Assuming that all turbines in the plant have the same power output.
They may have been built at different times or been upgraded and can have different specifications.


Main focus so far has been on lines above 22kV. See here for a map of power in Norway:

Progress as of October 2018:

  • Trøndelag complete above 22kV
  • Sogn og Fjordane complete above 22kV. Except 300kV line from Sogndal to Aurland that has not been updated with improved data.
  • Møre og Romsdal complete above 22kV.
  • Hedmark complete above 22kV
  • Akershus is, except for Asker and Bærum municipalities, complete above 22kV
  • Østfold complete above 22kV
  • Oppland is completed above 22kV.
  • Buskerud completed above 22kV northwest of Hønefoss and Hokksund.
  • Telemark is, with the exception of Porsgunn municipality, complete above 22kV.
  • Aust-Agder completed above 22kV with the exception of a 132kV line between Bykle and Hovden.
  • Vest-Agder done for lines above 22kV east of Feda and Lyngdal substations.
  • Finnmark complete for 132kV and above.
  • Troms complete for 132kV and above.
  • Nordland complete for 132kV and above.

Some power plants >10MW have been added in the same areas. Exception for smaller plants is made if they are directly connected to the regional lines.

Note that power lines are constantly being built or dismantled so it will never be 100% complete.

Datasets and tools

Downloadable datasets:

Map services for reference:


The following operators are, in addition to local distribution lines, also responsible for regional lines between 33kV and 132kV in their area.

See also