Very long cables

An electricity substation in Lincolnshire, eastern England, marks the

landing point for the world’s longest two-way electricity cable. The Viking
interconnector stretches across 765km of land and sea to connect Britain
and Denmark’s electricity markets. The joint project between the UK’s
National Grid and the Danish grid operator Energinet started commercial
operations at the end of 2023, allowing traders to make the most of
differing weathering patterns across the North Sea, importing electricity
into the UK when it lacks wind and exporting when it has too much. It may
not be the world’s longest cable for long. Developers are eyeing giant
cable projects around the world as the growth of renewable energy creates
huge value in trading electricity across different time zones and weather