older big screen TV , computers on all day. 2 adult household; 1 adult works from home. Extra freezer in garage, All lightbulbs energy efficient. Oh we also have dogs that go in and out all day, which I am sure impacts the temp in the house.
I have noticed that some people ALWAYS have the A/C on, and maybe those homes are extra cool, but there are ways to cut some energy usage: CF bulbs, powerstrips to shut off unused small electronics, using dishwasher and clothes washer in the late evening, even changing the house filters once a month will improve airflow and reduce electric usage. Good luck.
P.S. We moved from CT last year, and the electric here is way cheaper than our heating there!
The current renter says she is paying 450 a month to keep it at 74 degrees F. There are four people living in the home who work days and are home nights. They are considering switching to flourescent bulbs - but I have to laugh and imagine this will not impact the bill very much since most of the bill seems to be A/C related.
I think the .10 per square foot is wrong for the summertime, this may be correct for an average over a 12 month period.