Jérôme Lépée

Partner
Lyon Office
Member of the Lyon Bar
Experiences
  • Partner at ADALTYS since 2012, and head of the Energy Sector
  • Associate lawyer at ADALTYS (2008 – 2012)
  • Lawyer at the Legal Department of EDF (1997 – 2001) then RTE (2002 – 2008)
  • Postgraduate degree (DESS) in Business Law and Taxation – GEFIRE (Faculty of Law – Clermont-Fd)
  • Post-graduate degree (DESS) in Legal, Accounting and Tax Auditing (Faculty of Economic Sciences – Clermont-Fd)
  • French
  • English
  • 2025 – Best Lawyers in Energy Law
  • 2025 – Best Lawyers in oil and gas law
  • 2024 – Tier 2, Industry focus: energy – Legal 500
  • 2023 – Tier 2, Industry focus: energy – Legal 500
  • 2023 – Incontournable in local authorities and the semi-public economy – Décideurs
  • 2023 – Unavoidable in administrative contracts and related litigation – Decision-makers
  • 2023 – Best Lawyer in energy law
  • ‘Jérôme Lépée has a great knowledge and technical understanding of the sector and subjects, while Marie-Christine Combes has a great understanding of the business with personal and wealth situations.’-Legal 500
  • ‘Jérome Lépée really listens to his clients to find tailored solutions. Maxime Castiglione is rigorous.

An expert in energy law and public economic law, Jérôme Lépée’s practice covers the entire energy value chain, both in advisory and litigation matters, including before the French Energy Regulatory Commission (Commission de régulation de l’énergie). A former lawyer for EDF energy companies, he is one of the pioneers in energy law and actively participated in the opening of the electricity market.

An “operational”, “responsive” and “efficient” lawyer, his clients praise his legal approach imbued with a strong technical and economic culture specific to energy, an essential asset for the success of the cases entrusted to him and the trust placed in him.

Leading a team of lawyers dedicated to this practice area, Jérôme Lépée advises on the most innovative areas of energy, in regulatory, contractual or complex arrangements: production of hydrogen or green gas, self-consumption, access to grids and interconnections, electric and gas terminals for vehicles, smart grids, innovative contracts (PPA, aggregation), market mechanisms: capacity guarantees, ARENH, adjustment, energy savings certificates (CEE- Certificats d’économie d’énergie), public/private partnerships.

Jérôme Lépée’s clients include major energy groups and their dedicated subsidiaries, intermediate-sized enterprises (ETI), SMEs, and public players of all sizes: State and satellite structures, Regions, local authorities.

Customer comments cited in the LEGAL 500 guide

“Jérome Lépée’s really listens to clients to find suitable solutions for them.”

“Jérôme Lépée has great knowledge and technical understanding of the sector and the subjects.”

Experiences
  • Partner at ADALTYS since 2012, and head of the Energy Sector
  • Associate lawyer at ADALTYS (2008 – 2012)
  • Lawyer at the Legal Department of EDF (1997 – 2001) then RTE (2002 – 2008)
  • Postgraduate degree (DESS) in Business Law and Taxation – GEFIRE (Faculty of Law – Clermont-Fd)
  • Post-graduate degree (DESS) in Legal, Accounting and Tax Auditing (Faculty of Economic Sciences – Clermont-Fd)
  • French
  • English
  • 2025 – Best Lawyers in Energy Law
  • 2025 – Best Lawyers in oil and gas law
  • 2024 – Tier 2, Industry focus: energy – Legal 500
  • 2023 – Tier 2, Industry focus: energy – Legal 500
  • 2023 – Incontournable in local authorities and the semi-public economy – Décideurs
  • 2023 – Unavoidable in administrative contracts and related litigation – Decision-makers
  • 2023 – Best Lawyer in energy law
  • ‘Jérôme Lépée has a great knowledge and technical understanding of the sector and subjects, while Marie-Christine Combes has a great understanding of the business with personal and wealth situations.’-Legal 500
  • ‘Jérome Lépée really listens to his clients to find tailored solutions. Maxime Castiglione is rigorous.

Expertises

Energy /

Business Cases