Most Texas power customers
can choose their electricity service from a wide variety of
"Retail Electrical Providers" (or REPs). The local service
provider utility in the area still maintains the power
lines, only the companies that buy and sell (REPs)
electricity were affected. However, customers served by
cooperatives or municipal agencies only have the choice if
their utility has "opted in" to deregulation, which most
have not.
Please review your state map.