The statistics are clear: the 5 Indonesia WhatsApp Number List items to consider in a carbon accounting type study are transport, housing, consumer goods, food and services. By making a finer breakdown, we identified the important elements that seem immediately impacted by the choice to stay in place or to travel to work (going to the office, staying at home, having a face-to-face meeting, having a video meeting. ): moving two people for a four-to-one client meeting in defense vs. four-way video client meeting For each one, we made assumptions based on our usual behavior as consultants in the Paris region.

We also made our calculations based on data found mainly on the ADEME Carbon Base. We finally decided to convert everything towards a common unit: the equivalent of the emission of one kg of CO2 into the atmosphere (noted kgCO2e). Here are the results : First surprise of this assessment: the weight of food in the balance sheet and under our assumptions! For a day of face-to-face work, we chose to include a restaurant meal with beef while we used the carbon footprint of an average French meal for the day teleworking. This choice induces a difference of 4kg of CO2 equivalent on the meal.

4 scenarios for concrete results

In both cases, lunch remains the most important GHG emission item in our carbon footprint. Small surprise, coffee also has its place in this balance sheet, with a carbon footprint similar to that of the electricity consumption of our devices … What concrete actions to reduce your carbon footprint in terms of food? For carnivores, favor dishes with a predominantly vegetable content (division by 2 to 3 of emissions), or chicken (1.58 kgCO2e) with beef (7.26 kgCO2e) For those who wish and whose health allows it, vegan meals will generally emit less GHGs (0.51 kgCO2e)

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After some research, it appears that the calculations of the emission factors include only the production and consumption of fuel and not the creation of transport infrastructure (rails, train, stations, roads, etc.). In Paris, the subways and RER have higher attendance rates than the buses, which explains the difference in emissions factor. We do not know if the relationship would be reversed if we took into account the creation of infrastructure (producing a rail is very expensive in CO2 …). With these data, we put our finger on the difficulty of defining calculation perimeters to assess emission factors.

Lever n ° 2: Travel

For the more courageous, bring your lunch box to the office, but your meal will probably be less rich in animal proteins than a meal at a restaurant. Lever n ° 2: Travel The use of the car explodes the carbon footprint of a scenario. 1km traveled by car contributes on average to the emission of 193 gCO2e. By metro / RER / tram in Île-de-France, 1km traveled corresponds to only 33 gCO2e. The surprise this time comes from the contribution of the bus, 4.5 times more emitting than rail transport: 146 gCO2e! A value finally quite close to the car … What concrete actions to reduce its carbon footprint regarding these trips?

In summary, the emissions of a day of face-to-face work are twice as high as those of a day of teleworking. Here, a good part of the difference is explained by the choice of the meal given that according to ADEME, a meal in a restaurant is on average richer in animal proteins than a meal at home. Emissions are reduced on travel, but also on the electricity and heat consumption of the premises, which consume more energy at work than at home. Offer a video meeting if the trip forces us to use the car or take the bus ( the trustees are already doing this )

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