70kWh in a day is only only 2.9 kWh in a hour or 2 T9s. Yes likely very loud but some people put up with it.
Running 2 miners would not cause any usual activity from power company.
This summer we had a few interns and one of them said his college roommate runs 10 x S9 in dorm apartment because of free electricity and central air conditioning. Don't know how people would be able to live in dorm room with 10 miners running