On coles.com.au, advertising and tracking add ≈ 19,768 g CO₂ per million pageviews (232 g from ad-serving alone) — 3.8× the index average, cleaner than 7% of the sites we measure.
Ad-relevant
19768
g CO₂ / 1M pageviews
Ad-serving only
232
g CO₂ / 1M pageviews
237
kg CO₂ / year at 1M pageviews per month
7
% cleaner than the DACH index
99
% of the footprint is tracking overhead, not ad-serving
Measured on the live electricity grid from public page-load data — an estimate of a site's ad-tech architecture, not a measured campaign figure. See the methodology →