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- Transmission Line80,968
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Chokepoints
Estonia · electricity network
Estonia power grid
OverWatts maps 1,322 km of Estonia's electricity transmission network across 167 line segments and 15 substations, the 101st most-mapped grid of 153 countries. Its backbone is high voltage (220–379 kV), carrying 1,322 km — 100% of the mapped length, with the highest tagged voltage at 330 kV. That works out to 29.7 km per 1,000 km² of land — moderate OpenStreetMap coverage, ahead of 69% of mapped countries. It is connected to 1 neighbouring grid by 1,016 MW of existing cross-border transfer capacity, with a further 2,800 MW planned.
OpenStreetMap coverage
This grades how completely OpenStreetMap has drawn Estonia'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. 36% of segments carry a real line name and 40% an operator tag.
Mapped line length by voltage
- 220–379 kV1,322 km 100%
167 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 Estonia
1.0 GW existing · 2.8 GW planned · capacities from the Global Transmission Database v0.1 (CC BY 4.0), existing as of 2023
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 Estonia's network
- Elering67 100%
Segment counts from OSM `operator` tags, merged across spellings. Present on 40% of segments — this ranks who is recorded, not market share.
How Estonia compares · mapped grid by country
- 1. People's Republic of China624,300 km
- 99. Kuwait1,430 km
- 100. Uruguay1,323 km
- 101. Estonia1,322 km
- 102. Latvia1,306 km
- 103. Mali1,194 km
Frequently asked
- How big is Estonia's transmission network?
- OverWatts maps 1,322 km of transmission line in Estonia, across 167 segments, plus 15 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 Estonia's grid?
- Most of the mapped network is high voltage (220–379 kV): 1,322 km of 1,322 km. The highest voltage tagged anywhere in the country is 330 kV.
- How complete is the grid map for Estonia?
- Moderate — 29.7 km of mapped line per 1,000 km² of land, ahead of 69% 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 Estonia?
- Elering are tagged as operators on mapped segments. Operator tags are present on 40% of Estonia's segments, so this ranks who is *recorded*, not market share.
- What interconnectors connect Estonia to its neighbours?
- 1,016 MW of cross-border transfer capacity to Finland, plus 2,800 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).
Elsewhere in Estonia
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.