Texas deregulation began in early 2002 with the approval of Texas Senate Bill Number 7. Now, the majority of the state, including Houston, has the power to select their own provider. Previously, consumers were only given one option for an energy supplier. Deregulation has allowed competition in the energy market and has given residents the power to choose which energy provider sells them energy and bills them each month.
On the other hand, month-to-month variable rate (no-contract) plans don’t have cancellation fees. You won’t be penalized if you find a better deal elsewhere and want to make another switch.  And, you won’t be stuck paying more than you should be if the market rate for electricity trends down.  But, if it goes up, you’ll be paying more than your in-contract neighbors, and you’ll likely want to shop around again for a better deal.