Carbone 4 is the leading independent consulting firm specialized in low carbon strategy and climate change adaptation.

Driven by strong values ​​of commitment, integrity and boldness, the Carbone 4 team is made up of 35 passionate and expert employees.

Our common goal since 2007: to guide our clients in understanding the emerging world.

Constantly paying attention to weak signals, we use a systemic vision of the energy-climate constraint, while keeping in mind that the vital technical transformation needs to come with a change of  mindset.

With a great attention to details and creativity, we work to turn our customers into leaders of the climate challenge.

Issues at stake

The scientific community expects the average global temperature to rise by between 2 and 6°C by the end of the century, compared to the mid-19th century. The extent of the increase will depend on the course of development decided by humankind for the coming decades.

Climate change of this magnitude in such a short time span would have a major destabilizing effect on society, on the environment, the economy and social matters. It is thus imperative to make a transition to a post-fossil-energy and generally post-carbon world.

The stakes are two-fold. The first is to make a strong constraining factor into a source of opportunities and shared projects, and push corporate strategy and management practices to create low carbon activities that are resilient and create value. From audit to action plan, Carbone 4 hopes to contribute in this way to enable all organizations, in the public and private sectors alike, to be innovative, anticipate change and take action.

Organizations must also become aware of climate change risks and vulnerability, and prepare for them, to make their strategy and assets more resilient.


Created in 2007 by energy and climate experts Jean-Marc Jancovici and Alain Grandjean, Carbone 4 is the leading consulting firm specialized in low carbon strategy and adaptation to climate change.

The firm’s name refers to Factor 4, the name given to France’s objective of cutting GHG emissions by 75% by 2050, compared to 1990 levels.

From the outset Carbone 4 has been dedicated to:

  • increasing understanding of the determining factors in the environmental transition, i.e. depletion of fossil fuel and non-renewable resources, climate change, deteriorating ecosystem services;
  • steps to spread awareness of these issues throughout all of society, and push it up the decision ladder to the highest levels in both the public and private sectors of the economy;
  • enrol economic actors in change, endowing them with diagnostic and operational tools that will enable them to build their development and adaptation strategy.

Our hallmark is using the right kind of lense to focus on carbon and climate issues