Core Points - The construction mobilization meeting for the ±800 kV UHVDC project from Southeast Tibet to the Guangdong-Hong Kong-Macao Greater Bay Area has been held, marking the start of the world's largest flexible DC transmission project in terms of transmission capacity, technology level, and investment scale [1] Group 1: Project Overview - The project involves a transmission line approximately 2,681 kilometers long, spanning four provinces: Tibet, Yunnan, Guangxi, and Guangdong [1] - The project has a transmission capacity of 10 million kilowatts [1] Group 2: Environmental Impact - Upon full operation in 2029, the project is expected to deliver over 43 billion kilowatt-hours of electricity annually to the Greater Bay Area, all sourced from clean energy [1] - The project will replace approximately 12 million tons of standard coal consumption and reduce carbon dioxide emissions by about 33 million tons [1] Group 3: Financial Aspects - The total investment for the project is approximately 53.2 billion yuan, with an additional investment of over 150 billion yuan for the supporting "water-wind-solar integrated" power base [1]