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Matthias Sethmann
Principal Counsel

Matthias Sethmann

Rechtsanwalt

Hamburg, Germany
Languages
  • German
  • English
Social media

Matthias Sethmann advises his clients on national and international projects in the energy and infrastructure sectors. He has special expertise with onshore and offshore wind farm as well as solar park projects where he advises his clients on planning, realisation and operational aspects of facilities. Apart from providing ongoing advice, Matthias also drafts, reviews and negotiates contracts (including FIDIC contracts) for the construction and operation of energy and infrastructure projects. His clients include German and international investors, utilities, project developers, service providers as well as plant manufacturers.

Matthias joined CMS in 2010 and has been a principal counsel since 2020.

Publications

  • "Bärendienst für die Energiewende", Fachverlag "energate", Juni 2016, together with Dorothée Janzen.
  • "Immun gegen Seekrankheit" zu Auktionen im Bereich Offshore-Windkraft, Erneuerbare Energien, Heft 1/2016, S. 48 - 49, together with Dr Holger Kraft.
  • "Die Projektverträge eines Offshore-Windparks" in "Handbuch Offshore-Windenergie", Oldenbourg Verlag 2013, together with Dr Holger Kraft.

Education

  • 2008 - 2010: Trainee lawyer at Hamburg Higher Regional Court, including stints with Hamburg District Court, the public prosecutor’s office in Hamburg and Hamburg’s state government as well as CMS Hasche Sigle
  • 2001 - 2007: Law studies at the Universities of Hamburg and Prague
  • 2001 - 2004: Part-time work for Deutsche Bank AG and Schiffshypothekenbank zu Lübeck AG in their departments for international shipping finance
  • 1998 - 2000: Trained as a banker with Deutsche Bank AG in Hamburg

Practice Areas
Mergers & Acquisitions Real Estate Real estate transactions and financing
sectors
Infrastructure & Projects Energy & Climate Change Private Equity & Venture Capital

Insights by Matthias

See all Insights
Deals Germany

CMS advises EDF power solutions Deutschland on innovative grid storage project

14 Jan 2026 2 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
Deals Germany

CMS advises Encavis with respect to cooperation on five onshore wind farm projects with ABO Energy

13 Oct 2025 2 min read
Deals Germany

CMS advises Stadtwerke Neumünster on its interest in the open access platform OpenNet GmbH

09 Jul 2025 2 min read
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