TGC-1 has put into operation the modernized hydroelectric unit No. 1, the second of four being updated at the Verkhne-Tulomskaya HPP. The first stage of modernization of the most powerful hydroelectric power plant in the North-West of the country has been successfully completed.

The ceremonial event at the station was attended by the governor Andrey Chibis and the General Director of Gazprom Energoholding LLC Denis Fedorov.

The modernized hydroelectric unit gained a new nominal load of 75 MW and synchronized with the Unified Power System.

All new equipment and automatic control systems are produced by Russian companies. Two impellers for the first stage of modernization were produced at the enterprise of the Russian JSC TYAZHMASH in the Czech Republic, the next two wheels for the second stage will be delivered from Syzran. Due to the use of modern polymer materials and the transition to a higher pressure of the control system, the amount of oil in hydraulic units is reduced six times, which significantly increases the environmental safety of the HPP operation.

The General Director of Gazprom Energoholding LLC also added that the total investment volume for the project of reconstruction and modernization of the HPP will be about 6 billion rubles.


The Verkhne-Tulomskaya hydroelectric power plant is a part of the Tuloma and Serebryanskaya hydroelectric power plants cascade of TGC-1. The plant is the largest HPP in the North-West of Russia. Four hydroelectric units with 276 MW capacity are installed at the Verkhne-Tulomskaya HPP. The HPP machine room is located underground at a depth of 50 meters.
TGC-1 is the leading producer and supplier of electric and heat energy in the Northwest of Russia. TGC-1 comprises power plants in four constituent entities of the Russian Federation: Saint Petersburg, Republic of Karelia and St. Petersburg and Murmansk region.

Posted by: 01 July 2021