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Celsius consultant

ClémentReynaudPhD

Co-founder and climate expert - Marseille office

With a PhD in nanophysics (Aix-Marseille Université, Institut d’Optique), Clément co-founded Celsius in 2019 and heads the Marseille office. He leads sector-specific Bilan Carbone® projects in healthcare, industry, hospitality and transport, ADEME’s ACT Pas à Pas programmes, and strategic support for executives on decarbonisation pathways.

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2 published articles, latest on 28 Jul 2026

Portrait of Clément Reynaud
Education
PhD in nanophysics (Aix-Marseille) - Institut d’Optique
Expertise
Sector-specific Bilan Carbone®, ACT Pas à Pas, BEGES, CSRD
Office
Marseille - PACA, Occitanie, Mediterranean
Sectors
Healthcare, hospitality, industry, transport
Publications

Articles by Clément

2 articles
Frequently asked questions

Common questions

The questions we hear most often about Clément’s work and how to start a project.

Sector-specific Bilan Carbone® assessments in healthcare, hospitality, industry and transport, mandatory BEGES, and strategic support for executives on decarbonisation pathways. As head of the Marseille office, he leads projects across multiple sites and group-level programmes.
The Marseille office covers PACA, Occitanie, Corsica and the industrial Mediterranean region. In-person attendance at scoping workshops, executive committee meetings and site visits affects the quality of the scope 1 and 2 data collected.
Yes. Completed sector projects, including university hospitals, independent hotels, SEVESO industrial sites and logistics operators, have built a database of emission factors and practical experience that Clément draws on from the scoping stage. See our comparison of methodological standards to understand the boundaries of each approach.
A free 30-minute video call to clarify your deadline (CSRD, BEGES or a first Bilan Carbone®), boundaries and budget. Clément responds personally within 24 working hours through the contact form.
The Celsius team

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