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Hungary · electricity network

Hungary power grid

OverWatts maps 3,786 km of Hungary's electricity transmission network across 717 line segments and 27 substations, the 67th most-mapped grid of 153 countries. Its backbone is extra-high voltage (380–764 kV), carrying 2,706 km — 71% of the mapped length, with the highest tagged voltage at 750 kV. That works out to 41 km per 1,000 km² of land — strong OpenStreetMap coverage, ahead of 81% of mapped countries. It is connected to 6 neighbouring grids by 6,800 MW of existing cross-border transfer capacity, with a further 5,351 MW planned.

Open the grid lens →Hungary profile →
3,786 km
Mapped transmission line
27
Substations
#67
of 153 mapped grids
6.8 GW
cross-border · 6 neighbours
750 kV
Highest voltage

OpenStreetMap coverage

Strong41 km / 1,000 km²ahead of 81% of 153 mapped countries

This grades how completely OpenStreetMap has drawn Hungary'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. 17% of segments carry a real line name and 45% an operator tag.

Mapped line length by voltage

717 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 Hungary

6.8 GW existing · 5.4 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

6.2 GW
Operating generation
140
km of line per substation
41
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 Hungary's network

Segment counts from OSM `operator` tags, merged across spellings. Present on 45% of segments — this ranks who is recorded, not market share.

How Hungary compares · mapped grid by country

Frequently asked

How big is Hungary's transmission network?
OverWatts maps 3,786 km of transmission line in Hungary, across 717 segments, plus 27 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 Hungary's grid?
Most of the mapped network is extra-high voltage (380–764 kV): 2,706 km of 3,786 km. The highest voltage tagged anywhere in the country is 750 kV.
How complete is the grid map for Hungary?
Strong — 41 km of mapped line per 1,000 km² of land, ahead of 81% 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 Hungary?
MAVIR, MVM PA, Austrian Power Grid AG and 4 others are tagged as operators on mapped segments. Operator tags are present on 45% of Hungary's segments, so this ranks who is *recorded*, not market share.
What interconnectors connect Hungary to its neighbours?
6,800 MW of cross-border transfer capacity to Slovakia, Croatia, Romania, Austria, Serbia, Ukraine, plus 5,351 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).

Elsewhere in Hungary

Transmission linesSubstationsPower plantsData 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.