Even though customers in deregulated cities routinely pay more for electricity, there is a bright spot. The gap between the average price paid for electricity between deregulated cities like Houston and regulated cities like San Antonio have dwindled to the narrowest point ever to 8.8 percent. Back in 2006, customers in deregulated cities were paying nearly 47 percent more for electricity than their counterparts in regulated cities.
Texas deregulated most of the state's electricity markets in 2002, a move aimed at lowering electricity costs by letting consumers choose their own electric power providers and their own plans. Some parts of Texas continued to be regulated, including those whose power is proved by municipally-owned utilities, electric cooperatives and investor-owned utilities that operate outside the state's primary power grid.
You’ll also see a flat rate and a price per kWh rate for TDU or TDSP (which stand for Transmission and Distribution Utility or Transportation Distribution Service Provider). These are costs that your utility charges for delivering electricity and maintaining power lines. The costs are unique to your local utility and have nothing to do with your electricity provider.