China Southern Power Grid invests in, constructs and operates power grids in Guangdong, Guangxi, Yunnan, Guizhou and Hainan, Hong Kong and Macao SARs and South-East Asian countries Its 1 million square kilometre power supply area serves 272 million people.. The company is a leader in UHVDC and VSC-HVDC. With a grid spanning nearly 2,000 kilometres from east to west, CSG is connected to hydro, coal, nuclear, gas, wind, solar, biomass, pumped storage and new energy storage power sources. In 2023, its international trade volume reached 70,712 GWh, electricity sales 1,348,300 GWh and an operating income of 842.6 billion yuan ($116.7 billion).