Arnaud Lambert | Fieldfisher
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Professional background

Professional background

I am a Brussels-based lawyer specializing in Belgian and European energy law. Over the past few years, I have advised a wide range of clients — from major public and private companies to innovative start-ups — on regulatory matters at the heart of the energy transition.

My work focuses on helping stakeholders navigate the evolving legal landscape of the energy sector, with a particular emphasis on the challenges of decarbonization, decentralization, and the rise of new production and consumption models. I have developed legal expertise in the renewable energy sector, advising on project development and regulatory compliance across technologies such as solar PV, onshore wind farms, geothermal energy, district heating systems, and biogas.

I graduated with a Master's in European Law from UCLouvain (2019) and a Master's in Business Law (2020). I was admitted to the Brussels Bar in 2022.

I am a native French speaker and proficient in English at a professional level.

Authored pieces

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EU Regulatory, Competition and Trade
Insight

Upcoming CBAM Amendments under the second Implementation package of the Clean Industrial Deal

19.12.2025
Second implementation package published by the European Commission on CBAM The gradual implementation of the definitive CBAM regime will start as of 1 January 2026 during a period of 8 years until 2034 (in parallel with phasing out EU ETS allowances). It will require companies importing covered goods to purchase CBAM certificates to offset embedded carbon emissions.
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