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Power circuit length of transmission system operators in Europe in 2025, by country (in kilometers)

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Source

Release date

September 2025

Region

Europe

Survey time period

2005 to 2025

Supplementary notes

Circuit length: TSO functions shared between BELENERGO, ODI and Oblenergos.

Date of access used as release date.

*Includes TransnetBW, Tennet, Amprion, and 50Hertz circuit length.

**Figures for circuit lengths of the following countries are from the following years:

  • Bulgaria from 2005
  • Belarus from 2009
  • Northern Ireland from 2010
  • Hungary from 2011
  • Greece and the Netherlands from 2012
  • Slovenia from 2013
  • Bosnia and Herzegovina, Scotland and England, and Spain from 2014

The exact dates for the figures that correspond to the countries not specified here have not been provided by the source.

The Ukraine figure includes Crimea.

Citation formats

Power circuit length of transmission system operators in Europe 2025, by country

Published by ÌÇÐÄÆƽâ°æ Research Department, Sep 24, 2025

Russia's Federal Grid recorded the longest national electricity circuit length of any transmission service operator (TSO) in Europe as of 2025, amounting to almost ** kilometers. France recorded the next largest circuit length, at ** kilometers.

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