Preparation work is underway in Danish waters to replace an outdated submarine cable that connects Denmark and Sweden, passing across Øresund.

Swedish and Danish transmission system operators (TSOs) Kraftnät and Energinet own and operate four Øresund links that connect Zealand and southern Sweden via two 400 kV connections and two 132 kV connections. The first 400 kV system, owned by Svenska Kraftnät, was renewed in 2020, with the second, owned by Energinet, close to having exhausted its technical life as the cables were laid 40 years ago.