The Viking Link, the longest land and subsea cable in the world, has now officially been launched by National Grid.

With it first being announced in 2018 and its installation commencing in 2020, the project will have enough capacity to power up to 2.5 million UK homes.

It is a 475-mile-long, 1.4GW-high voltage direct current (DC) electricity link between the British and Danish transmission systems connecting at Bicker Fen substation in Lincolnshire and Revsing substation in southern Jutland, Denmark.

The estimated £1.8bn project has involved the construction of converter sites and the installation of a land and subsea cable, which for the first time connects British and Danish energy grids.

According to National Grid, since the Viking Link commenced initial operations in December 2023 it has transported 1,733 gigawatt hours (GWh) of power between the two countries.

This amount of power is only set to increase, with the energy company claiming that in its first decade Viking Link will provide...