How big is Norway's transmission network?

OverWatts maps 8,900 km of transmission line in Norway, across 2,315 segments, plus 151 substations. This is mapped length from OpenStreetMap, not an operator-reported total — where OSM is incomplete the figure is a floor, never a ceiling.

What voltage is Norway's grid?

Most of the mapped network is extra-high voltage (380–764 kV): 4,841 km of 8,900 km. The highest voltage tagged anywhere in the country is 825 kV.

How complete is the grid map for Norway?

Moderate — 22.6 km of mapped line per 1,000 km² of land, ahead of 61% of the 153 countries with any mapped grid. Coverage grades how completely OpenStreetMap has drawn the network, not how much network exists; large, sparsely-populated countries score low for geographic reasons alone.

Who operates the grid in Norway?

Statnett, Statkraft, Hafslund E-CO Vannkraft and 5 others are tagged as operators on mapped segments. Operator tags are present on 77% of Norway's segments, so this ranks who is *recorded*, not market share.

What interconnectors connect Norway to its neighbours?

8,835 MW of cross-border transfer capacity to Sweden, Denmark, Germany, United Kingdom, Netherlands, plus 1,400 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023); flow over the GB cables is published live every five minutes by Elexon.

Norway · electricity network

Norway power grid

OverWatts maps 8,900 km of Norway's electricity transmission network across 2,315 line segments and 151 substations, the 37th most-mapped grid of 153 countries. Its backbone is extra-high voltage (380–764 kV), carrying 4,841 km — 54% of the mapped length, with the highest tagged voltage at 825 kV. That works out to 22.6 km per 1,000 km² of land — moderate OpenStreetMap coverage, ahead of 61% of mapped countries. It is connected to 5 neighbouring grids by 8,835 MW of existing cross-border transfer capacity, with a further 1,400 MW planned.

Open the grid lens →Norway profile →

8,900 km

Mapped transmission line

151

Substations

#37

of 153 mapped grids

8.8 GW

cross-border · 5 neighbours

825 kV

Highest voltage

OpenStreetMap coverage

Moderate22.6 km / 1,000 km²ahead of 61% of 153 mapped countries

This grades how completely OpenStreetMap has drawn Norway's network — not how much network exists. Large, sparsely-populated countries score low for geographic reasons alone, and every kilometre here is mapped length, so the totals are a floor rather than an operator-reported figure. 32% of segments carry a real line name and 77% an operator tag.

Mapped line length by voltage

380–764 kV4,841 km 54%
220–379 kV4,059 km 46%

2,315 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.

Cross-border links from Norway

Sweden3.7 GW
Denmark1.6 GW
Germany1.4 GW
United Kingdom · North Sea Link1.4 GW · live flow
Netherlands700 MW
United Kingdom1.4 GW · planned

8.8 GW existing · 1.4 GW planned · capacities from the Global Transmission Database v0.1 (CC BY 4.0), existing as of 2023 · GB cable flow every five minutes · Contains BMRS data © Elexon Limited copyright and database right 2026

On the interactive map

Open the interactive map →

Load against the network

25.6 GW

Operating generation

Data centres mapped

km of line per substation

22.6

km per 1,000 km²

Where there is room to connect a new load depends on published hosting capacity, which most operators release only as their own map. OverWatts does not yet ingest those feeds, so these are the density measures the open data supports — generation and mapped demand against mapped network — not a headroom figure.

Operators tagged on Norway's network

Segment counts from OSM `operator` tags, merged across spellings. Present on 77% of segments — this ranks who is recorded, not market share.

How Norway compares · mapped grid by country

1. People's Republic of China624,300 km
35. Ethiopia9,988 km
36. United Kingdom9,612 km
37. Norway8,900 km
38. Romania7,845 km
39. Indonesia7,547 km

Frequently asked

How big is Norway's transmission network?: OverWatts maps 8,900 km of transmission line in Norway, across 2,315 segments, plus 151 substations. This is mapped length from OpenStreetMap, not an operator-reported total — where OSM is incomplete the figure is a floor, never a ceiling.
What voltage is Norway's grid?: Most of the mapped network is extra-high voltage (380–764 kV): 4,841 km of 8,900 km. The highest voltage tagged anywhere in the country is 825 kV.
How complete is the grid map for Norway?: Moderate — 22.6 km of mapped line per 1,000 km² of land, ahead of 61% of the 153 countries with any mapped grid. Coverage grades how completely OpenStreetMap has drawn the network, not how much network exists; large, sparsely-populated countries score low for geographic reasons alone.
Who operates the grid in Norway?: Statnett, Statkraft, Hafslund E-CO Vannkraft and 5 others are tagged as operators on mapped segments. Operator tags are present on 77% of Norway's segments, so this ranks who is *recorded*, not market share.
What interconnectors connect Norway to its neighbours?: 8,835 MW of cross-border transfer capacity to Sweden, Denmark, Germany, United Kingdom, Netherlands, plus 1,400 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023); flow over the GB cables is published live every five minutes by Elexon.

Elsewhere in Norway

Transmission lines Substations Power plants Data centres

Network geometry: OpenStreetMap (ODbL) © OpenStreetMap contributors, ingested and measured by OverWatts · derived 2026-07-26. Counts every mapped line of 220 kV and above; the map layer draws the ≥380 kV backbone only, so it shows less than is measured here.