For each size of house or apartment, the electric company gives a range of what is considered normal acceptable use. When you go beyond this, they have other ranges. Like if you use maybe 130%, you move to a different bracket. Over 200%, another one. It gets more and more expensive as you use over what is considered appropriate.

I do not know the specific amounts alotted, and its not as if you go over that people will notice by any means. A good example. I have some friends who live together in a 4 bedroom hours. 6 people live there. They are not energy friendly. Another friend of mine lives with only 1 other person in a 4 bedroom house. They run 6000 watts in lights but are very energy conscious. Nothing left on, all CFL lights in the house, etc. They use LESS energy then the people who dont even grow weed.

I know people who have run 4000 watts in a 2 bedroom apartment. They had an absolutely insane bill, but nothing ever happened as far them being approached by anyone or anything like that.