My sims live in a gigantic mansion at the moment and their bills are about 11,000 simoleons. I expect, by the time I finish furnishing the house, their bill will be closer to 15,000-16,000? I have some empty rooms at the moment I've yet to furnish. As others have stated, I'm pretty sure the bill is solely based off of the stuff you own, both in lot and in household inventory, not how much electricity you actually use? I've never actually had auto-lights affect my bills before in anyway that I've noticed. Is that really a thing? :open_mouth: