How big is Sierra Leone's transmission network?

OverWatts maps 467 km of transmission line in Sierra Leone, across 22 segments, plus 0 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 Sierra Leone's grid?

Most of the mapped network is high voltage (220–379 kV): 467 km of 467 km. The highest voltage tagged anywhere in the country is 225 kV.

How complete is the grid map for Sierra Leone?

Partial — 6.1 km of mapped line per 1,000 km² of land, ahead of 22% 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 Sierra Leone?

Transco CLSG are tagged as operators on mapped segments. Operator tags are present on 27% of Sierra Leone's segments, so this ranks who is *recorded*, not market share.

Sierra Leone · electricity network

Sierra Leone power grid

OverWatts maps 467 km of Sierra Leone's electricity transmission network across 22 line segments and 0 substations, the 131st most-mapped grid of 153 countries. Its backbone is high voltage (220–379 kV), carrying 467 km — 100% of the mapped length, with the highest tagged voltage at 225 kV. That works out to 6.1 km per 1,000 km² of land — partial OpenStreetMap coverage, ahead of 22% of mapped countries.

Open the grid lens →Sierra Leone profile →

467 km

Mapped transmission line

Substations

#131

of 153 mapped grids

225 kV

Highest voltage

OpenStreetMap coverage

Partial6.1 km / 1,000 km²ahead of 22% of 153 mapped countries

This grades how completely OpenStreetMap has drawn Sierra Leone'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. 0% of segments carry a real line name and 27% an operator tag.

Mapped line length by voltage

220–379 kV467 km 100%

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

Operators tagged on Sierra Leone's network

Transco CLSG6 100%

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

How Sierra Leone compares · mapped grid by country

1. People's Republic of China624,300 km
129. Equatorial Guinea525 km
130. Liberia478 km
131. Sierra Leone467 km
132. Rwanda458 km
133. Lebanon445 km

Frequently asked

How big is Sierra Leone's transmission network?: OverWatts maps 467 km of transmission line in Sierra Leone, across 22 segments, plus 0 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 Sierra Leone's grid?: Most of the mapped network is high voltage (220–379 kV): 467 km of 467 km. The highest voltage tagged anywhere in the country is 225 kV.
How complete is the grid map for Sierra Leone?: Partial — 6.1 km of mapped line per 1,000 km² of land, ahead of 22% 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 Sierra Leone?: Transco CLSG are tagged as operators on mapped segments. Operator tags are present on 27% of Sierra Leone's segments, so this ranks who is *recorded*, not market share.

Elsewhere in Sierra Leone

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.