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

Posted on October 25, 2022October 25, 2022 by Thierry Leboucq

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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.

Rank	Name	ecoscore	Carbon Impact (gEqCO2)	requests	Energy (mAh)	Data (Mo)	Memory (Mo)	Water footprint (Litres)	Surface footprint (m2)
1	CIC	81	0,19	31	2,97	1	531,87	0,03	0,34
2	Le Blog du Modérateur	84	0,2	18	3,57	1,06	605,54	0,03	0,40
3	La Cantine	80	0,22	38	3,2	1,34	570,44	0,03	0,37
4	Banque des territoires	73	0,22	51	2,92	1,31	669,14	0,03	0,35
5	Whome	76	0,26	43	3,14	3,32	661,64	0,04	0,37
6	sfr	63	0,27	68	3,51	1,45	674,38	0,04	0,42
7	Chateau des Ducs de Bretagne	62	0,27	48	3,9	1,91	757,64	0,04	0,45
8	BNP Paribas	72	0,28	77	3,12	2,11	669,86	0,04	0,39
9	Cobage	67	0,31	72	3,3	3,15	582,25	0,04	0,40
10	Mismo	61	0,31	73	3,78	2,48	864,87	0,05	0,46
11	Enedis	52	0,35	57	3,5	5,91	716,59	0,05	0,42
12	Sogetrel	52	0,37	103	3,47	3,76	860,64	0,05	0,44
13	Ecosystem	36	0,37	52	4,93	4,33	744,72	0,05	0,57
14	_icilundi	69	0,38	27	3,37	9,48	661,03	0,05	0,40
15	PALO IT	61	0,39	87	3,8	5,04	708,84	0,05	0,47
16	Université de Nantes	71	0,4	61	3,46	8,16	650,39	0,05	0,42
17	VIF	51	0,41	112	3,79	4,41	826,63	0,05	0,48
18	La Box Loire Atlantique	63	0,47	91	3,74	8,63	650,42	0,06	0,47
19	Radio Prun'	50	0,48	44	3,56	12,92	712,56	0,05	0,43
20	Maison Europe	58	0,55	149	4	8,09	695,45	0,07	0,53
21	Isefac Bachelor	41	0,6	181	3,82	8,4	915,64	0,07	0,53
22	Accenture	35	0,61	63	6,92	11,29	647,93	0,08	0,80
23	Tele Nantes	48	0,8	146	3,43	21,39	821,12	0,08	0,48
24	Groupe Onepoint	57	1,11	84	3,36	40,15	744,13	0,10	0,47
25	Saint Nazaire Tourisme	47	1,5	70	4,16	58,42	761,91	0,13	0,57

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
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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.

Thierry Leboucq