On April 14, the rotor of Unit 4 of Maldang Hydropower Station was successfully hoisted into place, marking that the unit entered the final sprint of the final assembly stage and laid a solid foundation for Unit 4 to be put into operation on schedule.

The rotor of Ma 'erdang Hydropower Station consists of a center body, main shaft, sector support, large vertical ribs, magnetic yokes, magnetic poles, current collecting devices, etc. The outer diameter is about 12.8 meters, the maximum height is about 3.08 meters, and the lifting weight is up to 1050 tons. It is the heaviest lifting part of the hydro-generator set and the most important rotating component of the hydro-generator set, which is used to generate magnetic fields, transform energy and transmit torque. As the core component of the entire hydro-generator unit, the generator rotor requires high precision and difficulty in hoisting, and is the most important process in the entire unit installation process.

Ma 'erdang Hydropower Station has a total installed capacity of 2.32 million kilowatts. It is the hydropower station with the highest altitude and the largest installed capacity under construction in the Yellow River Basin. It is also the backbone power source point for the country to implement "power transmission from west to east" and "Qingqing power to Henan". According to reports, the Maldang Hydropower Station consists of 4 hydro-generators with a single unit capacity of 550,000 kilowatts and 1 hydro-generator with a single unit capacity of 120,000 kilowatts. All units of the power station will be put into operation by the end of 2024. After being put into operation, the average annual power generation is expected to reach 7.304 billion kilowatt hours, which can meet the electricity demand of 1.825 million households with an annual electricity consumption of 4000 kWh. It can save about 2.2 million tons of standard coal every year and reduce carbon dioxide emissions by about 8.16 million tons., reducing sulfur dioxide emissions by about 30,400 tons.