How big is Sweden's transmission network?

OverWatts maps 14,700 km of transmission line in Sweden, across 1,378 segments, plus 87 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 Sweden's grid?

Most of the mapped network is extra-high voltage (380–764 kV): 11,000 km of 14,700 km. The highest voltage tagged anywhere in the country is 500 kV.

How complete is the grid map for Sweden?

Moderate — 32.8 km of mapped line per 1,000 km² of land, ahead of 71% 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 Sweden?

Svenska kraftnät, Statnett, Fortum are tagged as operators on mapped segments. Operator tags are present on 27% of Sweden's segments, so this ranks who is *recorded*, not market share.

What interconnectors connect Sweden to its neighbours?

10,460 MW of cross-border transfer capacity to Norway, Denmark, Finland, Lithuania, Germany, Poland, plus 4,700 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).

Sweden · electricity network

Sweden power grid

OverWatts maps 14,700 km of Sweden's electricity transmission network across 1,378 line segments and 87 substations, the 24th most-mapped grid of 153 countries. Its backbone is extra-high voltage (380–764 kV), carrying 11,000 km — 75% of the mapped length, with the highest tagged voltage at 500 kV. That works out to 32.8 km per 1,000 km² of land — moderate OpenStreetMap coverage, ahead of 71% of mapped countries. It is connected to 6 neighbouring grids by 10,460 MW of existing cross-border transfer capacity, with a further 4,700 MW planned.

Open the grid lens →Sweden profile →

14,700 km

Mapped transmission line

Substations

#24

of 153 mapped grids

10.5 GW

cross-border · 6 neighbours

500 kV

Highest voltage

OpenStreetMap coverage

Moderate32.8 km / 1,000 km²ahead of 71% of 153 mapped countries

This grades how completely OpenStreetMap has drawn Sweden'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. 12% of segments carry a real line name and 27% an operator tag.

Mapped line length by voltage

380–764 kV11,000 km 75%
220–379 kV3,651 km 25%
Voltage untagged31 km 0%

1,378 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.

10.5 GW existing · 4.7 GW planned · capacities from the Global Transmission Database v0.1 (CC BY 4.0), existing as of 2023

On the interactive map

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Load against the network

29.7 GW

Operating generation

Data centres mapped

169

km of line per substation

32.8

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 Sweden's network

Segment counts from OSM `operator` tags, merged across spellings. Present on 27% of segments — this ranks who is recorded, not market share.

How Sweden compares · mapped grid by country

1. People's Republic of China624,300 km
22. Germany17,000 km
23. Egypt15,500 km
24. Sweden14,700 km
25. Pakistan14,600 km
26. Chile14,200 km

Frequently asked

How big is Sweden's transmission network?: OverWatts maps 14,700 km of transmission line in Sweden, across 1,378 segments, plus 87 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 Sweden's grid?: Most of the mapped network is extra-high voltage (380–764 kV): 11,000 km of 14,700 km. The highest voltage tagged anywhere in the country is 500 kV.
How complete is the grid map for Sweden?: Moderate — 32.8 km of mapped line per 1,000 km² of land, ahead of 71% 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 Sweden?: Svenska kraftnät, Statnett, Fortum are tagged as operators on mapped segments. Operator tags are present on 27% of Sweden's segments, so this ranks who is *recorded*, not market share.
What interconnectors connect Sweden to its neighbours?: 10,460 MW of cross-border transfer capacity to Norway, Denmark, Finland, Lithuania, Germany, Poland, plus 4,700 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).

Elsewhere in Sweden

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.