Nantes Digital Week 2022: Ranking of the digital sobriety of partners’ and visitors’ websites

Last month we were present at the Nantes Digital Week. We participated in several conferences and workshops on the theme of responsible digital. It was an opportunity to meet many digital actors but also many visitors curious to know more about this vast subject.

On Thursday 22 October we ran the workshop “Hosting, measuring and designing virtuous websites” together with DRI and Webofacto. In this context, we measured the websites of several visitors and partners of the event.

The ranking in detail

The average carbon impact of one minute of navigation for these 98 partners is 0.45 gEqCO2, which is the equivalent of driving 2 metres in a petrol-driven car. Only 8 sites are above this average, which shows a good trend. The most sober website in this ranking (the CIC site, 0.19 gEqCO2) has 7.8 times less impact than the least sober site (Saint-Nazaire Tourisme, 1.5 gEqCO2).

The average power consumption (mAh) is 3.7 mAh and on average 9.01 MB of data is exchanged. In terms of web requests, the average is 73.

ApplicationLancementInactive premier planAccès page itinéraireSaisie départ/arrivéeAffichage des résultatsChoix itinéraireinactive arrière plan
TAM0,41,20,11,30,30,21,1
TCL0,61,10,310,30,51,2
ILévia0,610,21,40,30,41,2
TAN0,61,10,11,70,40,52
CTS0,510,22,20,40,41,1
RTM1,51,10,31,60,20,31,1
Tisseo1,31,10,21,9101,1
Azur1,610,21,811,51
TBM0,81,10,62,70,41,51,1
RATP1,61,10,75,81,80,71,2

For each of these websites and applications measured on a Samsung Galaxy S9 smartphone, the measurements were carried out using our Greenspector Benchmark Runner tool, which enables automated testing.

  • Loading the application
  • Reading the website in the foreground
  • Reading the page with scroll
  • Website inactive in background

Each measurement is the average of 3 homogeneous measurements (with a low standard deviation). The consumption measured on the smartphone connected to a wifi network may be different when the smartphone is connected to a wired network. For each iteration, the cache is emptied beforehand.

Find out how Greenspector assesses the environmental footprint of a digital service.

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