The rotor of the last hydroelectric unit No. 3 has been lowered at the Toktogul Hydroelectric Power Plant

One of the most significant and technically complex stages of the modernisation process has been completed at the Toktogul Hydroelectric Power Plant: the lowering of the rotor into the generator shaft of hydroelectric unit No. 3.

This is the last of four units to be reconstructed as part of a large-scale project to upgrade the country's largest hydroelectric power plant.

The rotor, weighing 768 tonnes, is the heaviest part of the unit and was installed using two bridge cranes with a lifting capacity of 400 tonnes each. A similar operation was carried out here only once before, half a century ago, during the construction of the hydroelectric power plant.

Today, it has been repeated using modern technology and marks a new page in the history of the Toktogul Hydroelectric Power Plant.

Currently, the reconstruction of the last hydroelectric unit is in its final stage.

The following main works have been completed as part of the reconstruction: turbine installation – 72.3%, generator installation – 75%, rotor assembly – 100%, stator assembly – 95%, auxiliary electrical part installation – 58%, auxiliary mechanical part installation – 75%.
Work on replacing the hydroelectric unit is 70.1% complete.

After the reconstruction of hydroelectric unit No. 3 is completed by November 2025, the installed capacity of the plant will increase by another 60 MW and reach 1,440 MW. 
Overall, the modernisation of the four units will add 240 MW to the plant's capacity, providing additional electricity to around 24,000 households.

The project is scheduled for completion in November 2025.