“free heat” heh..
This is a poor concept. Much better to put large HPCs next door to power plants and dump the heat into their cycles. You have the power you need to run the HPC right there and you can significantly improve the power cycle efficiency with the waste heat. The HPC can have the normal physical and logical security safeguards. Distributing high power servers that dump a lot of waste heat into houses and apartments may work in the winter, but not in summer. Power plants can use the heat hear-round.
A good friend of mine patented this some years ago.