On April 29, Unit 1 of the world's first Datang Yuncheng 630°C ultra-supercritical double-reheat national power demonstration project achieved successful grid connection in one attempt, marking that the unit now has the capability to supply power externally and laying a solid foundation for its subsequent official commissioning.

As a benchmark national power demonstration project, the world's first Datang Yuncheng 630°C ultra-supercritical double-reheat national power demonstration project features core demonstrations including "turbine inlet reheat steam temperature reaching 630°C and unit net power generation efficiency exceeding 50%." It utilizes key technologies such as domestically independently developed martensitic heat-resistant steel G115 and austenitic steel C5, a generator dual-machine heat recovery system with power balancing, and deep utilization of flue gas waste heat. This breaks the long-standing passive situation of China relying on imports for key high-temperature and high-pressure component materials. It has not only driven the formation of a complete, independent industrial chain spanning material research, equipment manufacturing, and engineering applications, but also achieved a dual breakthrough: achieving independent controllability of core technologies and upgrading the iteration of equipment manufacturing. This establishes a solid foundation of engineering practice for the subsequent research and development, and application of even higher-grade ultra-supercritical power generation technologies.

After project commissioning, compared to conventional million- kilowatt units, it is expected to save 208,000 tons of standard coal annually and reduce carbon dioxide emissions by 540,000 tons. This not only realizes the deep integration of efficient power generation and environmental protection but also provides robust support and a strong demonstration for China's energy structure transition and the achievement of its "dual carbon" goals.