TNS energo Mari El PJSC


Maxim Belousov
Maxim Belousov
Deputy General Director of the PJSC TNS energo Group of Companies – Managing Director, PJSC TNS energo Mari El


TNS energo Mari El PJSC
Address Iyvana Kyrlya Street 21, Ioshkar Ola, Russian Federation, 424019
Phone +7 (8362) 46-51-80
Fax +7 (8362) 55-62-90


Public joint stock company TNS energo Mari El Republic is the guaranteeing supplier of electric energy in the territory of the Republic of Mari El. This is one of the fastest-developing organizations providing services to the population and organizations in the region. The company has a large network of customer service centers, a wide "lineup" of services offered to the consumers and services available for direct and remote service. Today, TNS energo Mari El is a team of skilled, competent and result-oriented professionals, 15 customer service offices, a professional contact center, and a functional website adapted to the needs of the customers. The Company renders services to 313,165 individuals and 7,714 legal entities.  
Key activities of TNS energo Mari El PJSC:
  • purchase of electric energy on wholesale and re
  • tail energy (power) markets; 
    sale of electric energy to consumers (including citizens) on wholesale and retail energy (power) markets;
  • acting as a guaranteeing supplier in the territory of the Republic of Mari El based on the respective decisions of competent authorities.


On January 1, 1964, Mari electric grid was established within the Gorky power grid. 22 years later, regional power authority Marienergo was founded on the basis of this company with a separate division named Electric Inspection Service. In February 1992, regional power authority Marienergo was transformed into Open Joint-Stock Company Marienergo. On May 30, 1996, based on the Order of RAO United Energy System of Russia No. 169, the Electric Inspection Service was converted to Energosbyt, which, besides the functions of state supervision, was assigned the task of sales of and accounting for electric energy.

On January 1, 2005, an independent company Marienergosbyt JSC was separated from Marienergo JSC as a result of reorganization. The energy sales company became the subject of the electric energy wholesale market. In 2006, the company was awarded the status of guaranteeing supplier of electric energy in the territory of the Republic of Mari El. 

Since 2010, Marienergosbyt JSC is part of TNS energo PJSC GC (formerly referred to as TNS energo JSC GC, Transneftservice C LLC). On June 30, 2015, the company was renamed to TNS energo Mari El PJSC.