all the folks talking about 6-computers and hot tubs got to realize some of us might be living in a studio appt. there's no hot tubs, there's probably one person, heat is often paid separately (is for me, in gas bill); there just aren't THAT many high-energy items you can put in a little appt. i still don't think you'd need to worry much, but there's a difference between a $300 bill in a house and a $300 in a small appartment; a big difference