Siemens Energy is to supply key components for the two high-voltage direct-current transmission projects Nuozhadu-Guangdong and Xiluodu-Guangdong in southern China. Purchaser is China Southern Power Grid Company, Guangzhou. Nuozhadu-Guangdong will have a transmission capacity of 5000 megawatts (MW) at a DC voltage of ± 800 kilovolts (kV) and provide electricity to the megacities in the Guangdong region, Xiluodu-Guangdong an overall capacity of 6400 MW at ± 500 kV. The total order value for Siemens is approximately 250 million euros. Commissioning of the systems is scheduled for 2013.