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Updated September 24, 2026

Which speaker to choose for a conference on sustainable development?

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The choice of the ideal speaker for a conference on sustainable development depends first and foremost on the objective of your event, and not solely on the general theme being addressed. Dimitri Carbonnelle, Nicolas Imbert, Cédric FONTAINE, Emilie Proyart, and Pascale Lefebure each offer a distinct approach, tailored to a variety of needs. This guide does not present a Top 5 ranking, but rather a comparison of the different perspectives—strategy, management, operations, decision-making, human dimension, etc.—that each speaker emphasizes. The table below details, for each one, their area of focus, the intended objective, and the target audience, to help you identify the most relevant profile for your event.

How to Decide Quickly

Identify the priority of your event, then follow the rule that applies.

  • If you want to understand energy challenges, the impact of AI, and adaptation levers for your sector. → Dimitri Carbonnelle Dimitri Carbonnelle — to decode decarbonization and energy adaptation
  • If you want to inspire concrete actions and accelerate resilience in your organization or community. → Nicolas Imbert Nicolas Imbert — to mobilize for action and tangible transformation
  • If you want to clarify the drought/flood paradoxes and get concrete actions on local water management. → Cédric FONTAINE Cédric FONTAINE — to understand the challenges of urban water
  • If you want to engage your teams, take the drama out of ecology, and spark a positive dynamic. → Emilie Proyart Emilie Proyart — to move beyond eco-anxiety and take collective action
  • If you want concrete examples of water consumption reduction and operational tools. → Pascale Lefebure Pascale Lefebure — to adopt efficient technological solutions
Speaker Overview Angle Objective Target

Angles and Specificities of Each Speaker

Dimitri Carbonnelle
Dimitri Carbonnelle
TEDx Speaker · Energy, Climate, Adaptation, AI Speaker · Author · Spokesperson Les Shifters / The Shift Project

Angle: Energy Challenges: Decarbonization, Electrification, and Resilience

For which audience / event: Executives, innovation managers, industry seminars, technology companies

Choose if… Choose if you want to understand energy issues, the impact of AI, and adaptation levers for your sector.

Conference to watch: Energy Challenges: Decarbonization, Electrification, and Resilience

Nicolas Imbert
Nicolas Imbert
Rethink the planet, help provide concrete answers to climate, environmental, health, economic, and social emergencies.

Angle: Building global resilience in response to climate disruption

For which audience / event: Managers, CSR leaders, corporate conventions, local authorities

Choose if… Choose if you want to inspire concrete actions and accelerate resilience within your organization or community.

Conference to watch: Building global resilience in response to climate disruption

Cédric FONTAINE
Cédric FONTAINE
'Making You Happy When It Rains'

Angle: Demystifies rainwater management with concrete and accessible solutions.

For which audience / event: Local governments, construction companies, sustainable city stakeholders, technical conferences or the general public

Choose if… Choose if you want to clarify the drought/flood paradoxes and get concrete actions for local water management.

Conference to watch: Understanding Rainwater, Made Simple: Untangling Fact from Fiction Between Drought and Flood, and Finally Knowing What to Do With the Rain That Falls at Home

Emilie Proyart
Emilie Proyart
Former start-up and advertising agency executive, Émilie will challenge your certainties and your dissonances! AI, Environment, Human Factor—it's time to break free!

Angle: Approaches the ecological transition from the perspective of the human factor and team cohesion.

For which audience/event: Executive committees, managers, corporate seminars, team-building workshops

Choose if… Choose if you want to engage your teams, take the drama out of ecology, and spark a positive dynamic.

Conference to watch: Feel Good – Eco-anxiety, a "healthy and congruent reaction" (WHO), but an emerging factor of psychosocial risk (PSR)

Pascale Lefebure
Pascale Lefebure
Scientist and Adventurer: Finding a Simple Solution!

Angle: Offers simple, immediately applicable methods to save water and accelerate sustainability.

For which audience/event: Industrial companies, local authorities, hands-on workshops, sustainable innovation conferences

Choose if… Choose if you want concrete examples of reducing water consumption and practical operational tools.

Conference to watch: Saving 60% of Water Is Easy!

FAQ

How do I choose a speaker suited to my audience’s technical level?

Identify your audience’s level of knowledge about sustainable development. For example, Dimitri Carbonnelle can simplify concepts for beginners, while Cédric FONTAINE can delve deeper for an expert audience.

Which speaker should I prioritize based on the goal of my conference?

Determine whether you want to raise awareness, inspire, or provide training. Nicolas Imbert is ideal for a strategic approach, whereas Emilie Proyart can illustrate concrete and operational initiatives.

How can I adapt the format of the presentation to the message I want to convey?

Specify whether you want a keynote speech, a panel discussion, or an interactive workshop. Pascale Lefebure, for instance, easily adapts to participatory formats to encourage exchange.

What elements should be included in the brief to ensure the relevance of the presentation?

Provide the speaker with the audience profile, specific expectations, and the context of the event. This allows the speaker, such as Emilie Proyart or Dimitri Carbonnelle, to tailor their talk.

Where can I find profiles of speakers specialized in sustainable development?

Platforms like Lespeakers list experts such as Nicolas Imbert or Cédric FONTAINE, making it easier to select according to your event criteria.

What’s next?

Once the angle is clarified, the simplest approach is to formalize your brief (objective, audience, format, duration, constraints). We can help you match with the right speaker on sustainable development.

For a detailed shortlist with biographies, also see our selection of speakers on sustainable development.