The Chinese government loves big projects that allow officials to kill two birds with one stone: satisfy the needs of the country's huge population and get the opportunity to show off their technical achievements. The height at which Chinese installers work is equivalent to a 90-story building. But the workers who are creating the country's new power grid seem to have no time to worry about such trifles, because they are busy building the tallest pylons in the world. In eastern China, in the province of Zhejiang, the unprecedented construction of the world's highest power line, Zhoushan, has been completed. Take a deep breath, because this report is not for the faint of heart or the impressionable. The line, which will connect the Zhoushan archipelago with the mainland, includes a unique passage over the sea between the islands of Jintang and Cetzi, the basis of which are two 380-meter pylons of Chinese design - the tallest in the world. The design of this power line allows for the connection of the banks without intermediate supports. This line is only part of the global project to electrify all of China. The total length of this line will be 3,324 km. The voltage on the ultra-high-voltage power line is 1,100 kilovolts - that is why the system is suspended. The construction of the power line support structures is part of a large project to create an ultra-high-voltage power transmission line between two urban districts of China - Zhoushan and Ningbo. In China, an ultra-high-voltage direct current power line has recently begun to operate, which has broken the world record for voltage, power and length. The operating voltage of the new line of the Chinese State Grid Corporation is 1.1 megawatts. It can transmit up to 12 Gigawatts of energy, which is enough to power 50 million homes. Although the transformers installed at the substations are considered mobile, they can hardly be called mobile, since the weight of each is 800 tons. Engineers working on the project call the line the "Power Silk Road", since it follows the ancient trade route of the same name. The line absorbs alternating current from the grid at a converter station near the capital of Xinjiang and sends direct current power to a second converter station in Anhui province in eastern China. It will transmit power equivalent to the 25,000 coal trains needed by the power plant. The designers aimed to install fewer large transformers to achieve maximum cost efficiency, but for a 1.2 MW converter station, they cannot be shipped from factories. The project has been in the works for more than 10 years, involving major contractors such as Sweden’s ABB, which plans to build a fully automated factory of the future in China, and Germany’s Siemens, which recently launched the world’s first 10 MW wind turbine with a 193-metre propeller. China is currently busy developing similar projects. The fact is that the country's main energy resources are located far from the outskirts of the state, which entails a number of serious problems, one of which is the difficulty in organizing a reliable power grid, consisting of significant energy losses during transmission over long distances. Carbon-free power transmission lines will also help Chinese energy companies achieve two main goals: • Increase the consumption of "green" energy. • Reduce downtime of alternative power generating stations. The widespread use of ultra-high voltage lines will attract about $ 30 billion in investment and will create over 10 thousand additional jobs in the field of renewable energy and related areas. Long-distance energy mains are also part of the strategy to stimulate the Chinese economy, which has shown negative dynamics against the backdrop of the coronavirus pandemic. The construction of the line will help expand the understanding of what an ultra-high voltage power line of such a long length is. The power line will play a key role in integrating sources of renewable energy remote from consumers into the national power grid. China has major load centers in the eastern region of the country, while significant energy resources are located in the west and northwest. Increasing demand for electricity over the past decade has prompted the development of ultra-high-voltage transmission lines to transmit power over long distances with minimal losses.