The county we live in has this thing you put into your house called power stat box. You pay $103 for the box and load money onto a card they give you that loads money to your box.
It tells you how much you have left, how much you average daily, and once it hits zero in your account your power shuts off. It does warn you when you are getting low. No deposit for electric and no late fees.
I am really liking it. We are averaging about $4.55 a day.