Clive George wrote:

the additional energy cost for eg a 1.8kw vs 1.5kw device, 30
mins/week, is only a quid or two a year. 8 Kwh or so. Say 150 million
households, that's 1200 gwh/year in the EU.

So ~1TWh out of 20PWh of all EU energy consumption, a 0.005% reduction
well done the EU.