The latest tech is using Bitcoin mining to heat water. If you're going to use resistive heating anyway I don't hate it, even though I'm a big crypto currency skeptic.

https://heatbit.com/

It’s easy to justify on paper and websites. I doubt it actually works out that way in practice.

What about instead a talk about datacenters energy usage?

Or no more hot drinks. Ban kettles.

Global population approximately: 8.44E+09, Energy to heat 1 liter of water in electric kettle: 80 watt hours, 1 Watt hour ~ 2.78E-15 exajoules. Global energy consumption approximately: 600 exajoules.

8.44E+980 watt hours(2.78E-15 exajoules/watthours)= 1.88E-03 exajoules 1.88E-03/600 = 3.12E-6 or .000312% of the global energy use.

In simple words. Banning kettles would do nothing to cut global energy use.

Isn't that only the energy of 1 liter per person per year? I think most people heat more water than that.

(Also I think bitcoin energy usage is also on the order of 0.001% of global energy use.)

Thanks, you're right, I'm off by x365. But still it's a very insignificant value.

A quick search says 200 TWh for bitcoin mining per year, out of a total of 31 000 TWh of electricity generation, that is, 0.6%, or 600 times more than what you thought.

The Comment above used energy consumption of 600 exajoule.

200 twh = 0.72 exajoule

0.72/600 = 0.0012

Which is off by 100 because I forgot to multiply by 100 for percent, so 0.1%.

But if we are in twh we can get the tea numbers as well: ~300 billion liters per year, with ~100Wh/litre that would be ~30TWh.

So 30 vs 200 is about as close as I expected.

But this is all just for fun.