On nfl.com, advertising and tracking add ≈ 15,209 g CO₂ per million pageviews (11,017 g from ad-serving alone) — 2.9× the index average, cleaner than 10% of the sites we measure.
Ad-relevant
15209
g CO₂ / 1M pageviews
Ad-serving only
11017
g CO₂ / 1M pageviews
183
kg CO₂ / year at 1M pageviews per month
10
% cleaner than the DACH index
28
% 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 →