I know two couples in 2-3 bedroom houses (2 adults/2 younger kids) who have utility bills approaching/exceeding $1,000/month (electric alone).
And I know a couple with a kid who are hardly frugal with their heat/electric (as in every time I go to their house there are 6 or 7 incandescent light bulbs running 24 hours a day, and who cook every day with their electric oven and stove, and who never turn the heat down below 70, and who have a heated water bed, electric dryer, electric water heater, etc.), whose bills are about $300-350 a month.
And I have a friend who leaves all the lights on in her house about 16 hours a day, and 5 lights 24 hours a day, as well as using a window air conditioner on full blast all summer, whose electric bills never creep above $50 a month.
And I have shared an apartment with some rather wasteful people who would regularly do things like turn off the cable box and leave the actual TV on all night, and run the AC with the windows open, and our bills rarely touched $100/month (all electric, including heat/hot water, w/a washer/dryer in-unit).
And I have shared an apartment where our thermostat was on a wall that led to an exterior hallway, so that if anyone left the door open (daily occurrence) our heat would run constantly, and where my roommate kept a window AC on full-blast every day that it was above 65, and another roommate refused to shut off the lights, and did I mention we were all home almost all day b/c we were in school? And our gas/electric bills ranged from $140-$250 combined...IN MASSACHUSETTS (very, very high utility rates).
And the best one, we got our neighbor's electric bill when we first moved in. They were running 3-5 electric space heaters about 12 hours a day (w/the space heaters in lieu of central heat, that means everything was electric, incl. water heater and washer/dryer). The bill was $600 for 45 days.
I'm not saying there are people who
couldn't run up that kind of bill, but the fact that I have seen people be incredibly wasteful and not even approach that level of bills makes it suspect. Even more suspect is the fact that the LL is refusing to fork over copies of the bills.