[reaperducer]

e.g. this study[1] in the UK puts "IT" as <6% of household electricity use, which is itself a fraction of a person's total energy use.

Why does it matter? Isn't any improvement, by definition, a good thing?

If changing some of our programming methodologies saves 1% of the world's energy, that's massive.

1% of UK energy would be 22TWh — a massive amount of energy. Just because when it's expressed as a percentage it's only 1% doesn't mean it's not worthwhile.