
Energy
Europe Guide 2026 : Bulgaria
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Kambourov & Partners
The department has a long-standing track record and is widely renowned among local and international energy market players for its involvement in landmark projects over the past two decades. The team provides integrated advisory and litigation services across all aspects of the energy sector, including:
• EU Green Deal and clean energy transition
• Electricity generation – renewables, conventional, and nuclear
• Smart electricity grids
• Electricity transmission, distribution, supply, and storage
• Electricity trading (including cross-border)
• Natural gas – exploration, extraction, transmission, and distribution
• Mining, fuels, and alternative fuels
• Energy efficiency and electric vehicles
• Regulatory regimes and project finance
• Litigation
The team handles legal, licensing, and tax matters in energy investments, with a focus on renewable energy sources, electricity and gas infrastructure, and alternative fuels. It advises on energy regulatory issues, including licensing, pricing, approvals for M&As, post-acquisition restructurings, financing, and planning for new builds (including nuclear power plants).
The department is actively engaged in advising projects financed under the EU Recovery and Resilience Facility, aimed at the green transition of the economy. It represents clients before Bulgarian courts, regulatory bodies, ministries.
The team is deeply involved in renewable energy projects, hydrogen storage facilities, and natural gas market development in Bulgaria.
Industries (7)
- Electricity
- Gas
- Nuclear
- Mining
- Renewables
- Natural Resources
- Fuels
Chambers Review
Provided by Chambers
Strengths
Provided by Chambers
Kambourov & Partners possess a very deep knowledge of Bulgarian regulations and government structures.
Energy respondentEuropeThey combine unmatched regulatory expertise with strong transactional capabilities.
Energy respondentEurope
Notable Practitioners
Provided by Chambers
Band 1 Band 1 Stefan Tzakov
Stefan Tzakov is active on a range of contentious mandates, including gas pipeline-related disputes and litigation proceedings concerning energy trading. He also advises on energy regulatory issues. Stefan has strong expertise in Bulgarian energy regulation, offering clear and solution-oriented advice and consistent responsiveness.
Energy respondentEuropeStefan Tzakov is a very responsive and knowledgeable lawyer. He quickly builds a relationship of trust with his clients.
Energy respondentEurope
Band 2 Band 2 Irena Petkova
Irena Petkova advises a range of international clients on the regulatory aspects of their Bulgarian energy interests as well as on entry into the market. Irena provides strong expertise in Bulgarian energy regulation, clear and solution-oriented advice and consistent responsiveness.
Energy respondentEuropeIrena Petkova is an exceptional professional with deep expertise in energy regulation and strong experience in supporting transactional work within the sector.
Energy respondentEurope
Ranked Individuals at Kambourov & Partners (2)
Members
Provided by Kambourov & Partners

Borislav Tcholakov


Irena Petkova
View profile of Irena Petkova
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