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Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Iceland · electricity network
Iceland power grid
OverWatts maps 1,075 km of Iceland's electricity transmission network across 50 line segments and 0 substations, the 108th most-mapped grid of 153 countries. Its backbone is high voltage (220–379 kV), carrying 1,075 km — 100% of the mapped length, with the highest tagged voltage at 220 kV. That works out to 10 km per 1,000 km² of land — partial OpenStreetMap coverage, ahead of 37% of mapped countries.
OpenStreetMap coverage
This grades how completely OpenStreetMap has drawn Iceland'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. 76% of segments carry a real line name and 52% an operator tag.
Mapped line length by voltage
- 220–379 kV1,075 km 100%
50 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.
On the interactive map
Load against the network
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 Iceland's network
- Landsnet26 100%
Segment counts from OSM `operator` tags, merged across spellings. Present on 52% of segments — this ranks who is recorded, not market share.
How Iceland compares · mapped grid by country
- 1. People's Republic of China624,300 km
- 106. Denmark1,149 km
- 107. Belgium1,090 km
- 108. Iceland1,075 km
- 109. Nepal1,041 km
- 110. Cameroon1,011 km
Frequently asked
- How big is Iceland's transmission network?
- OverWatts maps 1,075 km of transmission line in Iceland, across 50 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 Iceland's grid?
- Most of the mapped network is high voltage (220–379 kV): 1,075 km of 1,075 km. The highest voltage tagged anywhere in the country is 220 kV.
- How complete is the grid map for Iceland?
- Partial — 10 km of mapped line per 1,000 km² of land, ahead of 37% 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 Iceland?
- Landsnet are tagged as operators on mapped segments. Operator tags are present on 52% of Iceland's segments, so this ranks who is *recorded*, not market share.
Elsewhere in Iceland
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.