打造能源新支点，北部湾首个跨海联网工程海底电缆开始敷设

Group 1 - The Southern Power Grid's 220 kV undersea interconnection project for Weizhou Island has commenced cable laying, marking the first domestic use of insulated materials for this voltage level [1] - This project will end the "isolated network operation" of Weizhou Island, providing a strong impetus for the development of the marine economy in Guangxi [1] Group 2 - Upon operation, the project is expected to reduce carbon dioxide emissions by 4,318 tons based on gas-fired power generation calculations [4] - The cost of diesel power generation for local guesthouses, which can reach 300 yuan per hour during peak season, will be significantly reduced by the stable power supply from the grid, leading to lower operational burdens and notable energy-saving and carbon reduction effects [4] Group 3 - The project will also support the integration of offshore wind power near the island, providing a crucial transmission channel for future offshore wind energy in the Beibu Gulf [6] - This initiative aims to establish a new energy support point for the region's maritime development [6]