The world's first 630-degree Celsius thermal power unit was successfully tested on Tuesday, marking a breakthrough China has made in more efficient and cleaner coal-fired power generation.

This unit is part of a thermal power demonstration project in east China's Shandong Province, representing the country's cutting-edge advancement in high-efficiency and clean coal power generation technology.

It has achieved a thermal efficiency of over 50 percent in power generation and successfully overcome the technical challenges associated with welding the new-generation China-made G115 steel, enabling the large-scale application of the metallic material in domestic power engineering.

The commissioning tests on Tuesday has laid the foundation for the subsequent smooth startup and grid-connected operation of the whole units as scheduled.

Once operational, the project is expected to generate 9.6 billion kWh of electricity annually, saving approximately 217,900 tons of standard coal and reducing carbon dioxide emissions by about 588,300 tons a year.

This milestone marks not only a deep integration of high-efficiency power generation and environmental protection, but also provides robust support and a replicable model for China's energy transition and the attainment of its dual carbon goals.