Latest news

Innovative Mobile Technology Increases Renewable Energy Penetration in Southeastern Europe



Electricity foreshortenings

(only in Bulgarian)

Tenders and competitions

(Only in Bulgarian) Tenders and competitions for extraction and sale of timber in properties, forest territory with established real rights in favour of ESO EAD.

Buyer’s profile

(Only in Bulgarian)List of public procurement and qualification systems, market consultation, preliminary announcements

Electricity market

For free choice with care and responsibility!

Electricity System Operator


    The Electricity System Operator is responsible for the common operational coordination and control of the Bulgarian power system. It provides the operation, maintenance, repair and reliable functioning of the power grid. The Operator is responsible for the common operation of the electricity system with the electricity systems of the countries from the Continental Europe synchronous zone and works to unify the electricity markets in the region.

National Dispatching Center

Finance and budget

Liberalized market;
Ancillary services;
REMIT reporting.


We take care to ensure that the electricity reaches you


We are investing efforts to ensure the electricity security and connectivity of Bulgaria

Metering and Information Technologies

Provision of information from electricity metering to users connected to the electricity transmission grid.

Market development

Through integration into a green future


International and European projects

    ESO EAD has a strategic role in achieving the national goals in the energy sector by 2030 and in the longer term by 2050. The company is developing in four main areas: modernization and digitalization, innovation, cybersecurity and human capital development. Part of the effective approach in determining the specific activities to achieve the goals are the company's participation in international projects and initiatives and the implementation of activities funded by national, European and other international programs.
Human Resources


Join the team of Elektroenergien Sistemen Operator.

At Elektroenergien Sistemen Operator we create an environment making every employee feel admitted, respected and satisfied with the experience. About 4,000 employees across the country contribute daily to successfully achieve the objectives of ESO. We build strong teams striving for good results and sustainable success. Putting the employees first, we created a community jointly building a competitive company, adding value for our customers, partners and the society. Elektroenergien Sistemen Operator has established itself as an attractive place of employment with prospective opportunities for professional realisation. The company unites employees with professional competence in various fields, skilful to work in a dynamic environment. Our main priority is the investment in improving the knowledge, experience and competence of our employees, enhance their motivation and engagement with the work process. Through its social policy, the company takes care of the health of the employees and their families, allowing them to keep calm and achieve life-work balance.

Company structure

Overview of company’s structure, directorates, divisions, departments and sectors.


(only in Bulgarian) If you wish to join our team, is you have ambition and strive for success, review our job offerings.

School of Power Engineers

(only in Bulgarian) ESO supports the education of young people with ambition for development and professional realisation in the energy sector.

Success Follows the Successful!

Who we are

Meet our team

Elektroenergien Sistemen Operator is the independent transmission system operator of the Republic of Bulgaria, engaged in managing and operation of the country’s high-voltage electricity transmission grid. The transmission operator guarantees responsibly and professionally the secure, reliable and uninterrupted electricity supply in the country, and also manages the transit of electricity flows through the territory of Bulgaria and parallel operation with the electricity systems of the countries in Continental Europe synchronous area. The company manages the country’s electricity transmission system ensuring its balanced and quality operation 24/7, 365 days a year.

ESO EAD is a sole-owner company whose single shareholder is the Bulgarian Energy Holding EAD. It was incorporated by Decision of Sofia City Court dated 4 January 2007. The Company is holder of an electricity transmission license No. Л-419-04/18.12.2013 issued by virtue of Decision No. Р-205 of 18 December 2013 by the State Energy and Water Regulatory Commission (SEWRC). By Decision No. С-5/30.07.2015 and Decision No. С-7/05.11.2015, EWRC certified ESO EAD as an independent operator of the electricity transmission system of the Republic of Bulgaria.


ESO EAD has a two-tier management structure and is governed by a Supervisory Board and Management Board, including the Executive Director and an executive member. The independent transmission operator manages and maintains more that 15 thousand km of power lines and 297 electrical substations. The electricity system operator and its employee experts are governed by the striving to optimize the functioning of the electricity transmission grid in the country by implementing projects for development, modernization and expansion with the construction of new facilities. The objective of the transmission operator’s investment policy is to guarantee the efficient and quality functioning of the Bulgarian electricity system.

Supervisory Board

Alexander Trichkov Evden Nikolov Kostadin Popov Petar Petrov Plamen Radonov
Management Board

Anton Slavov Angelin Tsachev Plamen Yordanov


Registry office:

+359 2 9696 884,

+359 2 9696 887


Head office

201, Tsar Boris III Blvd.

City of Sofia 1618



Monday - Friday

8:00 - 17:00