How big is Poland's transmission network?

OverWatts maps 11,600 km of transmission line in Poland, across 2,599 segments, plus 60 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 Poland's grid?

Most of the mapped network is extra-high voltage (380–764 kV): 6,011 km of 11,600 km. The highest voltage tagged anywhere in the country is 450 kV.

How complete is the grid map for Poland?

Strong — 37.6 km of mapped line per 1,000 km² of land, ahead of 76% 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 Poland?

Polskie Sieci Elektroenergetyczne, Polskie Sieci Elektroenergetyczne S.A., PSE Operator and 5 others are tagged as operators on mapped segments. Operator tags are present on 36% of Poland's segments, so this ranks who is *recorded*, not market share.

What interconnectors connect Poland to its neighbours?

6,195 MW of cross-border transfer capacity to Slovakia, Czech Republic, Ukraine, Germany, Sweden, plus 3,900 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).

Poland · electricity network

Poland power grid

OverWatts maps 11,600 km of Poland's electricity transmission network across 2,599 line segments and 60 substations, the 32nd most-mapped grid of 153 countries. Its backbone is extra-high voltage (380–764 kV), carrying 6,011 km — 52% of the mapped length, with the highest tagged voltage at 450 kV. That works out to 37.6 km per 1,000 km² of land — strong OpenStreetMap coverage, ahead of 76% of mapped countries. It is connected to 5 neighbouring grids by 6,195 MW of existing cross-border transfer capacity, with a further 3,900 MW planned.

Open the grid lens →Poland profile →

11,600 km

Mapped transmission line

Substations

#32

of 153 mapped grids

6.2 GW

cross-border · 5 neighbours

450 kV

Highest voltage

OpenStreetMap coverage

Strong37.6 km / 1,000 km²ahead of 76% of 153 mapped countries

This grades how completely OpenStreetMap has drawn Poland'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. 42% of segments carry a real line name and 36% an operator tag.

Mapped line length by voltage

380–764 kV6,011 km 52%
220–379 kV5,619 km 48%

2,599 segments · a segment is credited to the country containing its midpoint, so a border-crossing line counts once, on one side.

6.2 GW existing · 3.9 GW planned · capacities from the Global Transmission Database v0.1 (CC BY 4.0), existing as of 2023

On the interactive map

Open the interactive map →

Load against the network

36.9 GW

Operating generation

Data centres mapped

194

km of line per substation

37.6

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.

Segment counts from OSM `operator` tags, merged across spellings. Present on 36% of segments — this ranks who is recorded, not market share.

How Poland compares · mapped grid by country

1. People's Republic of China624,300 km
30. Venezuela11,700 km
31. Morocco11,700 km
32. Poland11,600 km
33. Uzbekistan11,400 km
34. Libya11,200 km

Frequently asked

How big is Poland's transmission network?: OverWatts maps 11,600 km of transmission line in Poland, across 2,599 segments, plus 60 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 Poland's grid?: Most of the mapped network is extra-high voltage (380–764 kV): 6,011 km of 11,600 km. The highest voltage tagged anywhere in the country is 450 kV.
How complete is the grid map for Poland?: Strong — 37.6 km of mapped line per 1,000 km² of land, ahead of 76% 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 Poland?: Polskie Sieci Elektroenergetyczne, Polskie Sieci Elektroenergetyczne S.A., PSE Operator and 5 others are tagged as operators on mapped segments. Operator tags are present on 36% of Poland's segments, so this ranks who is *recorded*, not market share.
What interconnectors connect Poland to its neighbours?: 6,195 MW of cross-border transfer capacity to Slovakia, Czech Republic, Ukraine, Germany, Sweden, plus 3,900 MW planned. Capacities are from the Global Transmission Database (v1.0, 2023).

Elsewhere in Poland

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.