Your Greenhouse Gas Report will give you an overview of your impact on the climate, while helping you identify the most relevant action levers for your company. Once these levers have been identified, you can choose an emission reduction strategy. Typical reduction strategies aim to achieve short term reduction targets in line with the Paris Agreements.

I - Executive Summary

Quantifying the impact of your actions on your greenhouse gas balance is essential to managing your reduction strategy: it allows you to prioritize your actions to meet your objectives. In addition, it will allow you to identify the indicators necessary for actions rollout monitoring and the pitfalls to avoid during the implementation, all to help effectively reduce your emissions.

We recommend you to use the ADEME quantification method called “QuantiGES”, for which the ABC organization has certified us.

To estimate an action’s impact, you should map two scenarios. The first scenario is the one where your operations are not influenced by any emission reduction action (reference scenario). The second scenario is the one where your operations are influenced by an action implementation (action implementation scenario).

You can then go on the ADEME website to find a specific emission factor related to your activity in the specific business area which the action addresses. You should end up with one emission factor for the reference scenario and one emission factor for the action implementation scenario. Finally, to see the emission reduction that the action could lead to, you should compute the difference between the two emission factors.

Do you have any example of an action quantification?

This document provides 30 practical examples on how to quantify actions using the QuantiGES method.

You need to register to the ADEME website, which is a very quick process. You can then use all the emission factors as described on the page “Consulter les données en ligne” and the page “Télécharger les données”.

Of course ! Our climate strategy support package includes the prioritization and quantification of up to 5 reduction actions. This is not included directly in your GHG Assessment offer as it requires a lot of tailoring to your company's specific case. If you are interested, you can book a meeting with our methodology experts here : https://meetings.hubspot.com/marine-kohler/meeting-with-marine-kohler.

II - Overview of the QuantiGES method

To measure the impact of your reduction actions, ADEME recommends using the QuantiGES method. This method makes it possible to estimate the amount of emissions that are reduced as a result of a certain action, compared to a reference scenario over a given geographical and temporal perimeter (described in figure 1). This method also makes it possible to estimate how precise your final estimate will be by using precision indicators for key stages.

This method is divided into three steps, a summary of which you will find below. For more details, refer to the ADEME methodological guide, register for the free ADEME training on the subject, or contact us!

This phase allows you to start the project by clearly defining its limits and objectives. First, the action to be quantified must be defined: for effective communication and structured work, it is necessary, among other things, to define the title of the action, its bearer, its current status, its main objective and its implementation period. Next, we formalize the objective being quantified. Indeed, identifying the reason for applying the methodology makes it possible to deduce the desired level of precision. For example, when applying this method to construct a climate strategy, the aim is to get a first idea of the potential of an action. The expected precision on the results is therefore moderate, and can be improved during the project with real data.

In a second step, you will be able to identify the most probable reference scenario, which will show the hypothetical evolution of what your emissions would be if you did not implement a carbon reduction project. Once this scenario has been identified, you can describe the impacts of the action examined by constructing a consequence tree. To build this tree, we identify all the direct consequences of the action, then by iteration, the consequences of the direct consequences, etc. Consequences with a negative GHG impact are also included in the tree. After a few ramifications, we thus manage to identify the unitary impacts on each source of emission. The user will decide the degree of precision in this model. An example of a consequence tree is available below.

The ADEME also invites you to take into account the external factors that could influence the impact of the project. For example, the impact of an action plan aiming to generalize the installation of photovoltaic panels on the roof of a factory will depend on the weather: it will therefore be necessary to make, in a transparent way, an assumption on the average sunshine to calculate the impact of the action plan.

Finally, the action can be quantified. To start, you need to determine the scope of quantification, in particular, the period over which the action takes place, (in particular in the case where the period of consequences has no fixed end point, such as the economic incentive of bicycles for commuting). It is also necessary to agree on the GHGs taken into account.

Each of the direct consequences present in the tree can then be roughly estimated using average data, and the most significant items in absolute value are selected to be studied in more detail. The number of positions retained depends on the desired accuracy.

For each of these main impacts, it will then be necessary to collect activity data within your company and to look for specific emission factors to improve the rough estimate previously established. Once the impacts of the most significant positions have been added up, an estimate of the total impact of the action plan is available! This result must be accompanied by a quantification of the uncertainty based on all the uncertainty indicators collected during the different stages.

At Greenly, we keep averages values as a start to give you a first estimate of the impact of an action. We ask you to provide additional physical data only if you wish to commit to doing the action, for instance as part of the Greenly Net Zero Contributor Certification.

Once the results have been synthesized, analyzed and presented, the quantification of the reduction action is complete! The measure can be specified during its implementation, with the integration of additional data and the quantification of more consequences.

Although this method provides relevant and actionable results, its use can be difficult: the data sources are numerous and the consequences of an action are sometimes difficult to estimate. It may therefore be useful to rely on an expert.

Moreover, this method can only estimate the impact of isolated actions. Indeed, the impact of bundles of actions cannot be considered as the sum of the impact of individual actions: their interactions must be taken into account.

Greenly would be delighted to accompany you in helping you overcome these obstacles, via long-term support - do not hesitate to contact us!

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AIDE :

comment sélectionner des données en ligne

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