The source for the BBC article (https://cbeci.org/cbeci/comparisons) even gives it as 0.48% of total electricity production and 0.55% of total electricity consumption. The graph it and the article shows us misleading as it only compares electricity and not total energy consumption.
It's huge for pushing numbers around, but hardly "one of the biggest contributions".
https://www.bbc.com/news/technology-56012952
https://en.m.wikipedia.org/wiki/World_energy_consumption