The Viking Link, the world's longest land and submarine power interconnector, is operational and carries electricity between the UK and Denmark. The $2.15 billion project, a joint venture between National Grid and Danish system operator Energinet, will connect Bicker Fen substation in Lincolnshire to Revsing substation in southern Jutland. The line will be able to carry enough electricity for up to 2.5 million British homes, saving British consumers more than £632 million ($500 million) cumulatively over the next decade thanks to cheaper power imported from Denmark. Construction began in 2019 and took more than 4 million man-hours.