TGC-1

The company was created in 2005 by the merger of Lenenergo, Kolenergo and Karelenergogeneratsiya power companies. Formation of the new company was announced on 1 March 2005 by Lenenergo, Kolenergo and RAO UES. The company was officially registered on 25 March 2005 and began to operate on 1 October 2005. The integration of predecessor companies was completed on 1 November 2006. The majority shareholder of this time was RAO UES.

The company operates 52 thermal, hydro and co-generation stations in Saint Petersburg, Leningrad Oblast, Murmansk Oblast and Karelia. It has an installed generation capacity of 6,92 GW of electric power. In addition, TGC-1 is the major supplier of district heating in Saint Petersburg, Petrozavodsk, Murmansk, Apatity and Kirovsk with 13,49 thous GCal/hr of heating capacity.

The company operates through three branches – Nevsky, Karelsky and Kolsky. TGC-1 includes the following subsidiaries: JSC Murmanskaya CHPP (power supply of Murmansk and surrounding areas, share in authorised capital — 98.85%), JSC St. Petersburg Heating Grid (connection of heating networks in the area of operation of the company's CHPPs, share in authorised capital of 65.58%), as well as dependent companies of JSC HHC (transfer of heat energy from the Apatitskaya CHPP to consumers in the city of Kirovsk, with a share in authorised capital of 50%) and TGC-Service LLC (specialised repair company, share in authorised capital - 26%).