I wanted to say that this is a problem for all countries, because household power lines and transformers are not designed for mining. When problems arise, the workers of the power company will quickly find violations, otherwise they will have to modernize the power systems at their own expense.
This isn't a problem everywhere, electrical load is just electrical load, whether it is for mining or powering up a new AC / heater it makes little to no difference, I can personally fire up to 15-20kw of miners where I am staying right now and nothing will happen, many citizens oversize the power infrastructure to account for future expansions, families grow bigger, houses grow bigger, the number of houses increases, the demand for energy is increasing and many things that did not need electricity before -- need it today.
I understand that in many other places, adding 10-20% more load will break things, but that isn't because of mining, it's just because of poor planning by the electric company, long before mining (20 years ago or so) when using split AC become very popular in my city, many transformers started to break, main breakers had issues, wires were heating, and they had to change almost everything to account for those changes.
It makes a huge difference between an average house using 2 ceiling fans, a fridge, a few lights, and a TV (not even 1000w) and a house that uses 2 ACs, 2 water heaters, 2 washing machines, a vacuum cleaner, and what not, just the lifestyle of the people can increase consumption by 500% easily, so ya, old cities that still use the old infrastructure will break if every house added a single S9, whereby a modern city where they calculated the new average based on all the new (everything electric) and added a good 30-40% for future expansion won't have a problem if every house run a miner or two.
In my hometown, some remote houses have their own 100kva transformer just because they are a bit far from the nearest transformer, so instead of running expensive large wires at 240v, they just run the 11kv and drop a transformer a 100kva there, maybe a few years later someone else builds a new house around, so ya, many houses in many cities have access to a few tens of KWs which they could use without breaking a thing.