Prepaid electricity plans are yet another option available to Texas customers. Prepaid plans let you avoid credit checks and deposits by pre-paying for your electricity. Prepaid electricity plans typically do not have a fixed duration and operate on a pay-as-you-go basis. Shopping for prepaid electricity can often yield relatively cheap electricity with no deposit. See Prepaid Electricity: Is It Right For Me? for more.
Take a few minutes to sit down and do some digging.  Not only do you want to find out exactly which Houston power companies operate in your neighborhood and what it is they have to offer, but you want to find out which are the cheap power companies in Houston.  You’ve just bought a home!  You need to save as much as possible everywhere you can until you can get at least some of the move-in expenses paid down.  Now, while it’s true that most Retail Electric Providers require a deposit if your credit is poor or you haven’t had a utility in your name, not all of them do.  Even with those that do, some will accept a letter of guarantee, where someone else guarantees in writing that they’ll pay the bill if you don’t, in place of a cash deposit.  This can be even more useful once you consider that the typical deposit is 1/5th to 1/6th of an annual bill – if it’s a brand-new home, it might be that the only record of use is that of the construction company and that would be a seriously large deposit, indeed!
After spending so much time and energy with energy companies, I figure I should pass this info onto the internet world (within Houston). I am a Centerpoint Energy resident (you don't get to choose the electricity provider you have; it's based on where the electricity is provided). I think Houston is predominantly a Centerpoint energy area (correct me if I'm wrong).

TXU is high because they charge their customers for the "fuel" to run their power plants - that's what the supervisor told us when we called to complain about my godmother's bill. Her actual usuage was $350 and they charged her an additional $350. And she didn't understand the bill so she had been paying it for months until we started looking at it. They are a rip off. Would never recommend them.
Although electricity prices in the UK aren't cheap some countries have it much worse. In this article I'm going compare internationally to look at who is paying more $/kWh for their energy. I’ve gathered some numbers and crunched a little data to see who is really paying a lot for their power. For my neighbour here in the UK I’ll add a bit more data at the end.
You can sort, filter, and shop by pricing at YOUR specific usage level, which lets you shop and compare electricity plans based on the rates you’ll actually experience on your bill, inclusive of hidden fees and taxes. This ensures you’re not misled by the cheaper rates often advertised by electric providers…those “teaser rates” associated with higher usage levels that many households never enjoy because their usage level never reaches that pricing tier.