.... If they see that electrical cost gets to high for them to make profit, they will charge us, no doubt.
If ever this happens, will you step up and take most of the electricity charges since you're the biggest consumer?
Yes and no. I won't buy a full blown setup with 8 GPUs or sth. because that's a) not in my price range and b) I wouldn't be the first one. I know of at least 6 other students that started to mine last year or several years ago with small steups that are mostly silent.
But if I ever happen to buy me a 12000$ ASIC-miner and use it in my small appartement, then yes I'll step up and get me a new contract and also open a sauna for everyone to use.