国家电网：蒙西—京津冀±800千伏特高压直流输电工程开工

Core Viewpoint - The commencement of the Mengxi-Beijing-Tianjin-Hebei ±800 kV UHVDC project marks a significant step in promoting energy transition and green development in China, aligning with national strategies for energy security and economic growth [1][2][3]. Group 1: Project Overview - The Mengxi-Beijing-Tianjin-Hebei project will connect the Ordos Datong converter station in Inner Mongolia to the Xiong'an converter station in Hebei, spanning approximately 700 kilometers with a rated voltage of ±800 kV and a capacity of 8 million kW, with a total investment of about 17.2 billion yuan, expected to be operational by 2027 [2][3]. - This project is the first to utilize "dual 800" UHV mixed DC transmission technology, enhancing the ability to transmit and consume energy from large renewable energy bases [2]. Group 2: Energy Transition and Regional Development - The project serves as a crucial channel for the "Shage Desert" renewable energy base, capable of transmitting 12 million kW of installed renewable energy capacity to North China's load centers, contributing to a larger external transmission capacity exceeding 50 million kW [3]. - It will facilitate the construction of a comprehensive power supply system in Hebei, delivering over 36 billion kWh of electricity annually, replacing 6.3 million tons of standard coal, and reducing carbon dioxide emissions by 16.6 million tons [3]. Group 3: Economic Impact - The project is expected to stimulate over 39 billion yuan in upstream and downstream investments and create more than 12,000 jobs across various sectors, including equipment manufacturing, surveying, design, and construction [4]. - By the end of 2025, the State Grid Corporation's cross-regional and cross-provincial transmission capacity is projected to reach 370 million kW, laying a solid foundation for high-quality development during the 14th Five-Year Plan [4].