When building and laying underground power cables, the transmission system operator TenneT tries to minimize the impact on people, agriculture, the environment and nature as much as possible. The strict soil and nature conservation regulations are observed. This film shows the laying of NordLink's high-voltage direct current cables (1,400 MW, 525 kV, mass-impregnated cable, bipolar, HVDC). NordLink, the "green link", is a power connection for the exchange of Norwegian hydropower with German wind energy. NordLink can supply 3.6 million households with renewable energy.