The German industrial giant expects the new 320kV DC CS (direct current compact switchgear), which uses up to 95% less space compared to previous air-insulated units, to underpin a "new portfolio" of low-loss HVDC transmission technologies.

“With the 320kV DC CS switchgear’s market readiness, we have laid a cornerstone for the development of a completely new portfolio for efficient power transmission," says Denis Imamovic, Siemens' head of development for gas-insulated direct current transmission systems.