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Dorothée Janzen
Partner

Dorothée Janzen, LL.M. (University of Michigan, Ann Arbor)

Rechtsanwältin

Hamburg, Germany
Languages
  • German
  • English
  • Italian

Dorothée Janzen is a renewable energy and plant construction expert, with a particular focus on advising on developing and implementing onshore and offshore projects. She regularly advises her clients on energy supply contracts and direct marketing issues and also represents them in court and arbitration proceedings.

Dorothée joined CMS in 2003 and became a partner in 2011. Prior to that, she was a research assistant at the Max Planck Institute for Comparative and International Private Law in Hamburg.

Awards & Recognitions
01 –
  • Quote
    Listed for Energy Law
    Deutschlands beste Anwälte 2023 – Handelsblatt in Kooperation mit Best Lawyers
  • Quote
    Listed for Energy
    Deutschlands beste Anwälte 2021 – Handelsblatt in Kooperation mit Best Lawyers

Publications

  • Europäisches Versicherungsvertragsrecht, Basedow, Jürgen/Fock, Till (Hrsg.), Australien: Der Insurance Contracts Act 1984, Mohr Siebeck Verlag 2002

Education

  • 1999 - 2000: LL.M. at the University of Michigan, Ann Arbor
  • 1997 - 1999: Trainee lawyer in Hamburg
  • 1992 - 1997: Law studies in Trier
Practice Areas
Commercial Real Estate Production and Product Liability Real estate transactions and financing Project development and construction law
sectors
Energy & Climate Change

Insights by Dorothée

See all Insights
Deals Germany

CMS advises KfW on the acquisition of 25.1 % of Germany's largest transmission system operator TenneT

03 Feb 2026 2 min read
Deals Germany

CMS advises EDF power solutions Deutschland on innovative grid storage project

14 Jan 2026 2 min read
Expert Guide International

CMS Expert Guide to consequential loss in the energy sector

18 Dec 2025 4 min read
Deals Germany

CMS advises WBS Power on the sale of Germany's largest co-location BESS and solar PV project to Prime Capital and on strategic joint venture for hyperscale data centre

08 Dec 2025 1 min read
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