3 Széchenyi rkp.
1054 Budapest

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Practices & Sectors

Balázs Sepsey assists with greenfield projects and provides advice on the regulatory aspects of energy contracts. Sepsey also represents financial sector clients in renewable energy portfolio acquisitions.

Clients describe him as 'very accurate, quick and solution-orientated' and add that he 'gives extremely understandable written material'.

Chambers Europe, 2020

Balázs Sepsey

Balázs Sepsey

+36 1 428 4417

Balázs Sepsey is a Counsel in the Budapest office. He focuses on energy law.


  • MAJOR INTERNATIONAL FINANCIAL INSTITUTION on the proposed financing of a USD 1 billion natural gas transaction between Hungary and Ukraine with a focus on regulatory issues relating to natural gas transportation and natural gas stored in Hungarian natural gas storage sites
  • A MAJOR EUROPEAN ENERGY HOLDING on the compatibility of long-term natural gas supply agreements with EU competition law
  • A LISTED HUNGARIAN RENEWABLE ENERGY COMPANY on the acquisition of the Sinergy Group from a large European energy conglomerate
  • DUFENERGY GLOBAL COMMODITIES on the establishment of its Hungarian electricity and natural gas trading operations and related regulatory and contract law issues
  • JOINT VENTURE OF TWO MAJOR CEE ENERGY HOLDING COMPANIES on the development and construction of two new 880MWe CCGT power plants in Hungary and in Slovakia, including the preparation and negotiation of all project agreements and advising on the related regulatory issues
  • A MAJOR EUROPEAN ENERGY HOLDING on the Hungarian nuclear regulatory framework, including the regulation of nuclear liability
  • RWE’S MÁTRAI POWER PLANT on the implementation of a complex REMIT compliance system


  • 2005: Central European University, Budapest, Diploma in Advanced European Legal Practice
  • 2003: Humboldt University, Berlin, Diploma in International Commercial Arbitration and Dispute Resolution
  • 1999 – 2005: Pázmány Péter Catholic University, Budapest, Faculty of Law, Bachelor of Law


Budapest Bar Association


Hungarian, English, German


  • Co-author of the handbook on the regulation of the Hungarian natural gas market, Wolters Kluwer, 2014
  • Co-author of the handbook on the regulation of the Hungarian electricity market, Wolters Kluwer, 2010
  • Co-author of the Hungarian chapter of the handbook on the implementation of the European Takeover Directive, Oxford University Press, 2009