The carbon footprint is a Germany WhatsApp Number List for calculating greenhouse gas (GHG) emissions , invented and standardized by ADEME, the Environment and Energy Management Agency. Did you know that any company with more than 500 employees is bound by a regulatory obligation to carry out and publish its carbon footprint every 4 years? To do this, it can use the ADEME carbon base. It is a documented and public database, grouping together many emission factors . This is the quantity of CO2 emitted when carrying out an action such as a 1km journey by public transport, the manufacture of a laptop computer or the production of 1 kWh of electricity …

The emissions of a GHG report are segmented into 3 categories, called Scopes (perimeters in French). Scope 1 includes direct emissions, mainly due to the combustion of fossil fuels. The indirect emissions related to the consumption of electricity, heat or cold belong to Scope 2. Finally, Scope 3 includes all other indirect emissions such as business travel, transport of goods or waste management. Only Scopes 1 and 2 are mandatory in a carbon footprint, Scope 3 is optional. This would lead us to conclude that the Bilan Carbone exercise primarily targets companies that consume a lot of fossil fuels (Scope 1) or electrical energy (Scope 2).

So, does an ISLEAN consultant pollute

A carbon footprint takes into account the emissions of various greenhouse gases including CO2, methane and water vapor. All these emissions are converted into a common unit, the tonne of carbon equivalent (denoted tCO2e, as well as its derivatives kgCO2e, gCO2e, etc.). These carbon equivalents are calculated using the global warming potentials ( GWP ) of the gases. For example, the GWP of methane at 100 years is 25. This means, that over a period of 100 years, 1 ton of methane will have the same effect of warming the atmosphere as 25 tons of CO2! GWPs are therefore ratios that allow all emissions to be expressed in the same unit in order to establish a carbon footprint.


First observation: the majority (60%) of our GHG emissions belong to Scope 3. These are therefore indirect emissions and evaluating them requires making a certain number of hypotheses. For example, if our electricity consumption (Scope 2) is easy to obtain via our electricity bills, it is more difficult to estimate the quantity of waste produced by the practice or the number of kilometers flown by plane as part of our business travel (Scope 3). For these emission items, we are then obliged to formulate hypotheses, that we have found important to collect in the table below,

Best practices for becoming a green consultant

something rarely done in the publications that we have examined, which casts doubt on the rigor of the work carried out since we do not know either the sources or the calculation hypotheses done. Documenting and sourcing your work is fundamental . First to clarify the scope retained in Scope 3, where nothing is imposed. Then to understand where the proposed figures come from, based on calculations and source data. We have therefore taken care to list all the activities that we considered to emit CO2, the calculation assumptions used as well as the sources which allowed us to access the various emission factors.

In ISLEAN, we have decided to apply the carbon footprint method to our firm in order to quantify our GHG emissions for the year 2019 . A task far from easy, for several reasons which we will detail. In the balance sheet, with the calculation assumptions used, it is 81 tCO2e issued by the ISLEAN firm in 2019 , which then consisted of 22 members. This represents 3.7 tCO2e per consultant over the year or even 16.9 kgCO2e per man day . To give a few orders of magnitude, the average carbon footprint of a French person is 9.9 tCO2 in 2019 [5]. The work of a consultant, under our assumptions, would then represent 1/3 of its annual emissions.

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