Subsea Cables Tie European Electric Grids More Closely
Running between Kvinesdal, Norway, and Eemshaven in the Netherlands, the $860-million NorNed line is roughly twice as long as the former record holder, completed between Australia and Tasmania in 2006.
NorNed’s 450-kV direct-current line includes two 310-kilometer single runs of mass-impregnated-paper-insulated cable from Norway, in up to 410 meters of water. A two-core section completes the shallower southern 270 km.