Private company
Electricity System Operator
Electricity System Operator is the TSO of Bulgaria founded in 2007.1 It is headquartered in Sofia.1 It is part of Bulgarian Energy Holding.1
„Електроенергиен системен оператор“ ЕАД (ЕСО) е българско държавно предприятие със седалище в София, оператор на националната система за пренос на електрическа енергия.2 From the Bulgarian Wikipedia, CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
- Industryelectric power transmission1
- HeadquartersSofia, Bulgaria1
- Websitewww.eso.bg
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Corporate structure
Electricity System Operator is part of a group headed by Bulgarian Energy Holding. 8 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
- Bulgarian Energy Holding Sofia
- Electricity System Operator Sofia, Bulgaria
- Bulgargaz Subsidiary · Sofia
- Bulgartransgaz Subsidiary · Sofia
- Maritsa East 2 TPP Subsidiary · Kovachevo, Bulgaria
- Mini Maritsa Iztok Subsidiary · Radnevo, Bulgaria
- NEK EAD Subsidiary · Sofia
- Kozloduy Nuclear Power Plant Subsidiary · Kozloduy, Bulgaria
Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
Subsidiaries and ownership
Parent company
Owners
From Wikidata.1
Timeline
- Apr 1, 2007Founded Founded1
Links
- Websitewww.tso.bg1
- Websitewww.eso.bg1
- X (Twitter)x.com/ESO_EAD1
- WikidataQ12279650
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1
- 2
- 3Wikimedia CommonsElectricity System Operator photo by Dimitǎr Boevski, CC BY-SA 4.0