TGC-1 Began Renovation of the Largest CHPP in the South-West of St. Petersburg

03 August 2020

TGC-1 has started the implementation of a project to reconstruct the Avtovskaya CHPP, the largest generation facility in the southwestern part of St. Petersburg. The work will make it possible to increase the electric and thermal power of the second stage steam turbines and improve the reliability of power supply to consumers. The main work package is planned to be completed by 2025.

The plant renovation will be performed in three phases. Currently, the implementation of the first two phases has begun, which involve the refurbishment of two turbine units T-100 and T-97 with an increase in electrical power to 120 MW and 116.4 MW, respectively, renovation of the equipment of 35 kV and 110 kV outdoor switchgears, construction of a circulating process water supply system, which will significantly increase the environmental friendliness of the power plant operation. The third phase provides for the renovation of the common plant systems, which is necessary, in particular, to ensure the possibility of heat supply to consumers using a “closed” scheme.

To date, the manufacture and acceptance of a set of elements for the upgrade of steam turbines No. 6 and No. 7 has been completed. The equipment meets all the necessary requirements and will be installed during the refurbishment of two turbine units.


TGC-1's Avtovskaya CHPP was put into operation on 26 December 1956. The CHPP provides electricity and heat to industrial enterprises, residential and public facilities of Admiralteisky, Moskovsky, Kirovsky and Krasnoselsky Districts of St. Petersburg. About one million citizens live in the CHPP's heat supply zone. Electricity generated is supplied to the Unified Energy System of Russia.

In terms of installed electrical capacity, the plant is in fifth place in the system of TGC-1 PJSC, and in third place in terms of heat capacity.

TGC-1 (part of Gazprom Energoholding Group) is a leading producer and supplier of electric and heat in the North-West of Russia. TGC-1 comprises 52 power plants within four constituent entities of the Russian Federation: St. Petersburg, the Republic of Karelia, and Leningrad and Murmansk Oblasts.