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Jean-Marc Jancovici

Jean-Marc Jancovici

Engineer and energy and climate expert, co-founder of Carbone 4 and president of The Shift Project

Jean-Marc Jancovici explique les liens étroits entre l'énergie, l'économie et le changement climatique. S'appuyant sur la science physique, les ordres de grandeur et un enseignement très accessible, il aide les dirigeants d'entreprise, les institutions et le grand public à distinguer les solutions réalistes des illusions technologiques.

Ses discours encouragent les publics à aborder la transition écologique avec clarté, à anticiper les contraintes énergétiques et à construire des chemins de transformation cohérents.

Languages
English (US), French / Français
Formats
Keynotes, educational talks, debates and discussions with business leaders and decision-makers

Biography

An engineer, consultant, lecturer and keynote speaker, Jean-Marc Jancovici is recognised as one of Europe's most influential voices on energy and climate issues.

Understanding the physical limits of the economy

A graduate of École Polytechnique and Télécom Paris, Jean-Marc Jancovici began his career in organisational consulting before specialising in energy strategy and greenhouse-gas emissions reduction.

His work is built on a central conviction: the economy cannot be considered separately from natural resources, available energy and the laws of physics. Through charts, comparisons and orders of magnitude, he makes often complex mechanisms accessible and helps audiences understand the constraints shaping our societies.

At the origin of the Bilan Carbone® methodology

In the early 2000s, Jean-Marc Jancovici worked with ADEME on the development of Bilan Carbone®, which became a reference tool for measuring greenhouse-gas emissions from companies and local authorities.

In 2007, he co-founded Carbone 4, a consultancy specialising in low-carbon strategy and climate-change adaptation. This expertise has led him to work with major companies, public bodies and organisations facing energy and environmental transformations.

President of The Shift Project

Jean-Marc Jancovici is also co-founder and president of The Shift Project, a think tank working to reduce the economy's dependence on fossil fuels.

Through the French Economy Transformation Plan, The Shift Project develops sector-by-sector pathways covering transport, industry, housing, agriculture, employment and energy. The approach seeks to move beyond declarations of intent and build a planned, measurable transition compatible with physical constraints.

A teaching approach that has become a reference

Since 2008, Jean-Marc Jancovici has taught at Mines Paris – PSL. His courses on energy, climate and the limits of economic development are widely available online.

His ability to explain complex scientific subjects without oversimplifying them enables him to engage a broad range of audiences, including executives, engineers, public officials, students, journalists and citizens.

Author of the publishing phenomenon World Without End

Jean-Marc Jancovici has written several books on energy and climate change, including Dormez tranquilles jusqu'en 2100.

He also co-authored the graphic novel World Without End with Christophe Blain, exploring the links between energy, economic development and climate disruption.

Through his books, media appearances and talks, he argues for a transition that is chosen and organised rather than one imposed by crises.

Physics will always bring economics back to reality.

— Jean-Marc Jancovici
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Conferences

Through his talks, Jean-Marc Jancovici offers a systemic reading of climate and energy transformations. His aim is not merely to sound the alarm, but to help participants understand the physical mechanisms at work, assess the credibility of proposed solutions and better anticipate the changes ahead.

01

World Without End

The energy miracle and climate disruption

Inspired by the graphic novel World Without End, this talk traces the history of energy and its role in the development of human societies.

Jean-Marc Jancovici explains how abundant energy transformed transport, industry, agriculture, housing and living standards, while showing why this prosperity still depends heavily on fossil fuels.

He examines the orders of magnitude of nuclear power and renewable energy, the physical limits of the transition and the contradictions of supposedly unlimited economic growth.

  • Understand the role of energy in economic development
  • Assess our dependence on fossil fuels
  • Distinguish installed capacity from energy actually produced
  • Understand why the transition also requires greater sufficiency
  • Rethink economic choices through the lens of physical constraints
Ideal for Executives, employees, students, institutions and audiences seeking a comprehensive view of energy and climate issues.
Format Keynote
02

Sleep Soundly Until 2100

Misconceptions about climate and energy

In this incisive talk, Jean-Marc Jancovici challenges the main misconceptions surrounding the energy transition.

He explains why vehicle electrification, biofuels, solar panels and technological innovation will not, on their own, solve the climate crisis.

He examines the limits of decoupling economic growth from CO₂ emissions and stresses the importance of reasoning in terms of physical flows rather than monetary values alone.

  • Identify misleading solutions
  • Understand the limits of so-called green growth
  • Assess technologies using orders of magnitude
  • Prioritise climate action
  • Better understand the trade-offs required by the transition
Ideal for Executive committees, CSR leaders, public decision-makers, elected officials, journalists and companies pursuing a decarbonisation strategy.
Format Keynote
03

Decarbonising Europe

An unavoidable revolution

Europe has set itself the goal of achieving carbon neutrality by 2050, an ambition that requires a profound transformation of the entire economy.

Jean-Marc Jancovici presents the main decarbonisation pathways for transport, industry, agriculture, buildings and energy production.

Drawing on the work of The Shift Project, he highlights the available levers, technical constraints and necessary policy decisions.

  • Understand the practical implications of carbon neutrality
  • Identify priority sectors
  • Plan the transformation of the economy
  • Anticipate infrastructure and skills needs
  • Turn broad objectives into measurable pathways
Ideal for European institutions, government ministries, local authorities, industrial companies, energy-sector stakeholders and organisations engaged in the transition.
Format Keynote
04

The Greenhouse Effect

How far will we change the climate?

Jean-Marc Jancovici returns to the fundamental scientific mechanisms of climate disruption.

What is the greenhouse effect? Which gases are involved? How do human emissions alter temperatures, rainfall and ecosystem functioning?

He also examines the potential consequences of warming for agriculture, health, water resources, migration and geopolitical balances.

  • Understand how the greenhouse effect works
  • Identify the human origin of climate change
  • Assess the potential consequences of warming
  • Connect climate, economics and geopolitics
  • Understand the urgency of mitigation and adaptation
Ideal for Educational institutions, local authorities, associations, NGOs and organisations seeking to raise awareness of climate fundamentals.
Format Keynote
05

When Will the Energy Breakdown Come?

Anticipating the shocks of a post-fossil world

Our economy still depends heavily on oil, coal and gas. What will happen when these resources become scarcer, more expensive or harder to access?

Jean-Marc Jancovici explores the risks associated with declining oil production, gas crises, geopolitical tensions and vulnerabilities in energy systems.

He shows that energy security is directly connected to economic, industrial and social stability.

  • Understand the economy’s dependence on fossil fuels
  • Anticipate supply-disruption risks
  • Identify organisational vulnerabilities
  • Strengthen energy resilience
  • Build a long-term strategy based on sufficiency and efficiency
Ideal for Companies, industrial groups, local authorities, institutions and organisations preparing their strategy for a more energy-constrained world.
Format Keynote

For which events?

Jean-Marc Jancovici speaks at the key moments where people, performance and impact matter.

  • Seminars and conventions
  • Leadership committees and strategic talks
  • Product launches
  • CSR and climate events
  • Institutions, schools and universities

Possible formats

Formats adaptable to your goals and context.

  • Inspiring talk
  • Impactful keynote
  • Participative workshop
  • Panel
  • Webinar

Why choose them?

A unique experience serving strong, useful messages.

  • Field experience backing the message
  • Authentic and inspiring stories
  • Human, demanding and accessible approach
  • Tailored content aligned with your stakes
Would you like to invite Jean-Marc Jancovici to your event?

Videos

A selection of talks and presentations exploring the links between energy, climate, economics and decarbonisation.

Looking for more content or a specific clip? Contact us
World Without End: understanding energy to act on climate 38:36
Conference clip

World Without End: understanding energy to act on climate

En s'appuyant sur sa bande dessinée à succès, Jean-Marc Jancovici explique les mécanismes énergétiques qui façonnent nos sociétés. Une intervention essentielle pour comprendre les enjeux climatiques et repenser nos modes de vie.

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Sleep Soundly Until 2100: misconceptions about the transition 2:23:39
Conference clip

Sleep Soundly Until 2100: misconceptions about the transition

Jean-Marc Jancovici remet en question l'illusion d'une croissance « verte » illimitée et rappelle les lois physiques qui contraignent la politique énergétique.

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Decarbonising Europe: from promise to planning 17:29
Conference clip

Decarbonising Europe: from promise to planning

Drawing on the work of The Shift Project, Jean-Marc Jancovici details the levers needed to build a realistic pathway towards carbon neutrality.

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When Will the Energy Breakdown Come?
Conference clip

When Will the Energy Breakdown Come?

Faced with declining fossil resources and geopolitical tensions, Jean-Marc Jancovici calls for a rethink of infrastructure, energy security and the economic model.

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Want to feature Jean-Marc Jancovici at your next event?

Our team helps you craft a tailored intervention, aligned with your goals and your audience.

Publications

  • World Without End, a graphic novel co-authored with Christophe Blain on the links between energy, economic development and climate disruption.
  • Dormez tranquilles jusqu’en 2100, a book examining climate and energy issues.
Would you like to invite Jean-Marc Jancovici to your event?