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).
There are a variety of different types of gas and electricity plan that are currently out there for prospective customers to consider. Some plans offer fixed rate deals , these allow you to be sheltered from price rises over an agreed period of time. Other plans allow you to manage your entire account online, making it easier and more efficient for you to handle your energy supply.
On the one hand, long-term, fixed-rate (contract) plans offer stability in pricing. If energy supply costs suddenly go up in your area, you won’t be left paying more than what you bargained for. You’ll have peace-of-mind. If you want to switch out of your contract before it ends with a lower cost plan, you’ll likely face a cancellation fee (early termination fee).