Estonian electricity system

The Estonian electricity system connects the power stations in Estonia, the network operators and electricity consumers. The Estonian electricity system in turn belongs to the larger synchronised united system BRELL, which controls the AC power lines connecting Estonia to the neighbouring countries of Latvia and Russia, and in turn with their neighbours Lithuania and Belarus.

EstLink 1, a direct current undersea cable between Estonia and Finland, has also been in operation since the end of 2006, and bears great symbolic significance for the connection of the electricity systems of the Baltic and Nordic states. Construction work on the second interconnection between Estonia and Finland, the EstLink 2, started in early 2011. The EstLink 2 undersea cable is 170 km long, with around 140 km of the cable lying at the bottom of the Gulf of Finland. The new connection became operational in 2014.

The main grid of the Estonian electricity system consists of:

  • 1702 kilometres of 330 kV lines
  • 158 kilometres of 220 kV lines
  • 3479 kilometres of 110 kV lines
  • 61 kilometres of 35 kV lines
  • 139 kilometres of direct current lines
  • 146 substations

Three 330 kV lines connect Estonia with Russia, two running from Narva to St Petersburg and Kingissepp, and one linking Tartu and Pskov. We are connected to the Latvian system by two 330 kV lines, one between Tartu and Valmiera, and one between Tsirguliina and Valmiera. Estonia is connected to Finland by the Harku-Espoo 150 kV DC cable.

Elering works as the Transmission System Operator of the Estonian electricity system, with responsibility for planning the functioning of the system and managing it so that the safe and reliable operation of the network is always guaranteed. As well as enabling the transmission of electricity, Elering is also responsible for managing the balance of the system at all times.

ENTSO-E’s central collection and publication platform for electricity generation, transportation and consumption data and information for the pan-European market can be found here: transparency.entsoe.eu.

Additional information