Also I have never seen anyone in the Philippines use a heating device for anything but cooking.
And why would someone in the developing world use an electric heating device when these are much less efficient than propane.
What I am driving at is the playarefully (w here is not about free electricity. It is about fooling people who don't count their electricity chich is most of us) and/or getting people locked into one form of money that the government can takeover.
The advantage of a CPU is that you can reuse it for many tasks. You don't have to be locked into the chip design that Larry Summers decides should go into your mobile device. This is incredibly 666 directed. Now we have fascist merger of Treasury Dept of the USA and chipsets for mobile phones.
I'm not sure they all have cold showers, but you don't need to look far to see electricity heating is very common wherever there isn't natural gas on demand.
FYI 3rd World people even those with subsidized electricity don't squander it like you think, many have pay as you go metering and are very conscious of when and where to use electricity, it makes up a much bigger portion of there monthly budget so its treated with more respect.
I imagine a network of POS terminals and Wifi hotspots like an internet of things micro hashing away. in some parts of the world hashing can even be used to desalinate water.