Regulatory, Dispute Resolution, Energy

Jan Erik Janssen


Phone +31 20 530 5213
Mobile +31 6 1297 0107
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Jan Erik Janssen assists clients with their most sensitive regulatory issues in administrative and civil litigation and before competition authorities, regulators and policy makers. His experience covers sector-specific regulation, competition, FDI and sustainability issues and EU law (including State aid and public procurement). Jan Erik has been involved in high-profile enforcement cases of regulators and has been the lead lawyer in litigation that has shaped the energy regulatory regime in the Netherlands, including landmark cases on tariff regulation in the electricity, gas and heat sectors, on grid congestion issues and in disputes relating to energy, hydrogen, EV and water infrastructure.

Jan Erik is a founding editor of the Netherlands Journal for Energy Law, has been described a “legal authority” in the energy sector, been voted best energy lawyer in the Netherlands by his peers and been ranked a leading (band 1) energy sector lawyer for more than two decades in the authoritative directories.


Chambers Europe – Energy & Natural resources: Regulatory

  • “He is pragmatic and very knowledgeable and aims to help you the best he can.” (2023)
  • “Jan Erik Janssen is not only one of the best lawyers I have ever worked with, he is also just a genuine nice guy. He has extremely extensive sector knowledge and is able to use that in a very pragmatic way.” (2022)

Legal 500 – Energy: Regulatory

  • “Jan Erik Jansen can be relied upon in moments of crisis. He cares that his clients are doing the right thing and can critically assess whether we are on the right track. He has a profound knowledge of the sector, and is able to understand every issue we have extremely quickly – the most straightforward lawyer I know – the man to go to.” (2024)
  • “Jan Erik Janssen has outstanding knowledge of the sector and is a good communicator. Well-equipped to balance the different interests of all relevant stakeholders and reasonable in his opinions of what can and cannot be achieved.” (2023)

Who’s Who Legal – Energy

  • Voted ‘Global Elite Thought Leader’ for the Netherlands in the category Power/Electricity (2023)
  • “Jan Erik Janssen enjoys a strong reputation in the Dutch market as a preeminent advisor and litigator of administrative and civil matters for clients with the energy sector.” (2022)
  • Partner at Stek (2006 – today)
  • Lawyer at Allen & Overy and its predecessor (1994 – 2005, partner as from 2002)
"Jan Erik is an authority in the field and creative with a lot of knowledge of the energy sector"
Chambers Europe 2019 - Energy & Natural Resources
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