If they have access to breaker box they can tell a lot from this. (Breaker box's are dangerous with live electricity).
I have a feeling this is someone in their mom/dad's house. Very few actually have "free" electricity, and even with free someone is paying for it.
Yeah and if the government is paying for it as what OP said, you dont wanna go all out right away, start slow.
Otherwise your government will think you are doing an illegal grow operation in your basement and come raid your house
I am lucky that I live on a real farm. It has people who do cattle, and crops on family land. So using a lot of electricity is not really horribly out of ordinary.
I have received a optional like 3 page report you could fill out about what your doing with so much electricity, and they gave you a small credit for the month. I passed on doing it and nothing bad happened.
