EstLink 2
The second Estonian-Finnish direct current connection, EstLink 2, was completed in 2014. The launch of the new connection increased the electricity transmission capacity between the two countries from the previous 350 MW to 1,000 MW.
EstLink 2 is owned by the system operators Fingrid Oyj and Elering AS.
The total length of EstLink 2 is approximately 170 km, of which 14 km is an overhead line in Finland, 145 km is a submarine cable in the north of the Gulf of Finland, and 11 km is an underground cable in Estonia. At both ends of the connection there are converter stations that convert direct current to alternating current and vice versa. The submarine cable is connected to the Finnish transmission system at the Anttila 400 kV substation in Porvoo. In Estonia, the underground cable is connected to the electricity network at the Püssi 330 kV substation in Ida-Viru County.
The total cost of the project was approximately 320 million euros, which was divided between Elering and the Finnish electricity transmission system operator Fingrid. The European Union supported the project with 100 million euros.
