Dr Guido Jansen

Dr Guido Jansen

Dr Guido Jansen


T +49 211 5660 24844

Industries Energy

Areas of practice

Dr Guido Jansen specialises in energy and antitrust law. In the area of energy law, he advises German and international utilities and network operators on all matters relating to the regulation of network access and network access fees, on unbundling provisions, and on how to draft contracts and represents them in abuse of dominance proceedings before regulatory authorities and in court. His activities pertaining to antitrust law include merger control proceedings, antitrust fine proceedings and abuse of dominance proceedings, as well as advising on joint ventures and on how to design distribution systems in compliance with antitrust law.


Dr Guido Jansen studied law at the University of Cologne (Germany) and business administration at the University of Hagen (Germany). Whilst at university and during his legal training, he worked for five years as a research assistant at the Research Institute for Economic Constitution and Competition Law (FIW) in Cologne. From 2003 to 2007, Guido Jansen worked as a lawyer in the Energy and Antitrust Law Department at the Cologne office of Freshfields Bruckhaus Deringer. He has been a Partner at Luther’s Dusseldorf office since January 2008.

Honors and distinctions
  • JUVE Guide 2023/2024: Listed under "Frequently Recommended" in "Regulated Industries - Energy Law" ("very good antitrust lawyer and proven expert in energy law")
  • The Legal 500 Germany 2024: Mentions in "Industry Focus - Energy" (first mention in 2015) and in "City Focus - Düsseldorf" 
  • The Legal 500 Germany 2019: Mention in the category "Antitrust Law" (first mention in 2016)
  • Best Lawyers 2025: Recommendations in "Competition/Antitrust Law" (first recommendation in 2020) and "Energy Law" (first recommendation in 2021)

  • ArcelorMittal: advising ArcelorMittal on energy and antitrust law issues regarding the acquisition of SaarFerngas AG including EU merger control
  • Representation of E.ON Hanse in a landmark case regarding the admissibility of a single-entry model within the framework of the cooperation agreement of the German gas transmission and distribution grid operators
  • Representation of numerous grid operators in a violation case before the Federal Network Agency and in an appeal case before the Higher Regional Court in Düsseldorf
  • Advice to various network operators on questions arising from incentive regulation
  • Advice to transmission grid and distribution grid operators on implementing the gas cooperation agreement


Blog posts