Thomas' practice focuses on the energy sector, including in particular renewable energy projects (onshore and offshore wind, biomass/biosteam), security of supply (capacity mechanisms, strategic reserves), grid tariffs, subsidy mechanisms (such as green certificates and, including State aid issues), domain concessions and licences, district heating, contracts (including corporate PPAs and FIDIC agreements), litigation and judicial review (Council of State, Markets Court, Brussels Court of Appeal, Constitutional Court).

Thomas also has considerable experience in the field of competition law, with over thirty merger filings with the European Commission, the Belgian and the Dutch competition authorities.

He is the author of several articles and publications about energy and competition law. 

Thomas speaks annually at the 'Energy Law Capita Selecta' conference and contributes to the Energy Law Annual.

Sectors & Markets
Branding icon

Memberships

Icon
Brussels Bar, 1997
Branding icon

Qualifications

Icon
Postgraduate Diploma in Economics for Competition Law, King’s College London (United Kingdom), 2009
Icon
LL.M. in European Law, Universiteit Gent (Belgium), 1997
Icon
Law degree, Universiteit Antwerpen (Belgium), 1996

What others say

Quote icon
One client enthuses that Thomas Chellingsworth is an "excellent lawyer who provides deep and thoughtful analysis," while another appreciates that he "explains things very clearly."
Chambers & Partners (2022)
Quote icon
Thomas Chellingsworth and Marc Vermylen are among the most experienced energy regulatory lawyers in Belgium. The standards are very high. They work in a very solution-oriented fashion, also in case of litigation.’
The Legal 500 (2022)
Quote icon
‘Thomas Chellingsworth is exceptional in his field. He knows all the ins and outs, without losing oversight of the bigger picture. He advises clearly to non-specialists and manages to give concrete and practical input that you can actually use when structuring up your financing transaction.’
The Legal 500 (2022)
Quote icon
"Professional, correct, thorough research, a lot of knowledge and the ability to apply this knowledge to specific cases. Thomas Chellingsworth and Christine Delagaye are open to consultation, easy to reach and strategically strong."
Legal 500 EMEA (2021)
Quote icon
"Thomas Chellingsworth is a true expert."
Legal 500 EMEA (2021)
Quote icon
"Thomas Chellingsworth is a very communicative and hands-on partner with vast experience in, and knowledge about, the energy sector and a business-oriented approach in his advice"
Legal 500 EMEA (2021)
Quote icon
Clients laud him for being "a very driven lawyer with a lot of useful knowledge, who is straight to the point, analytical, friendly and strategically strong."
Chambers & Partners Europe (2021)
Return to previous slide
Go to next slide