High Voltage Director Current (HVDC) has been attracting attention as a solution that helps turn renewable energies into the main source of power and contributes to the realization of a decarbonized society through the grid interconnection with offshore wind power generation, the long-distance transmission of power to large demand areas, and so on. The Swedish Ludvika Plant, located in the central region of Sweden around 220 km from its capital Stockholm, is the core site of Hitachi Energy, which possesses world-class technologies related to HVDC and boasts a track record of deliveries for projects around the world.