Compared to the rest of the nation, data from the U.S. Energy Information Administration which publishes annual state electric prices  shows that Texas' electric prices did rise above the national average immediately after deregulation from 2003 to 2009, but, from 2010 to 2015 have moved significantly below the national average price per kWh, with a total cost of $0.0863 per kWh in Texas in 2015 vs. $0.1042 nationally, or 17 percent lower in Texas. Between 2Best Electric the total cost to Texas consumers is estimated to be $24B, an average of $5,100 per household, more than comparable markets under state regulation. 
A major question point when considering whether or not switch electricity providers is "What will happen to electric rates?" This can be a tricky question to answer as rates are continuously in flux. In the short-term it's impossible to know exactly what will happen to rates but when looking at a longer term picture things become a bit clearer. Based on the graph above, electric rates in Texas have generally been increase over the past decade. Assuming this trend continues, the best way to protect yourself from increasing rates is to switch into a 12 month or 24 month plan and lock into a low rate.
Since the Texas electricity market opened to competition in 2002, many Texas residents have had the opportunity to choose their own electricity provider. Instead of relying on their local utility to provide them with electricity, most Texans can choose from a variety of competitive providers, allowing them to shop around for the perfect electricity plan for their homes and lifestyles.
As a result, 85% of Texas power consumers (those served by a company not owned by a municipality or a utility cooperative) can choose their electricity service from a variety of retail electric providers (Compare Electricity Rates), including the incumbent utility. The incumbent utility in the area still owns and maintains the local power lines (and is the company to call in the event of a power outage) and is not subject to deregulation. Customers served by cooperatives or municipal utilities can choose an alternate Gas And Electric Bill only if the utility has "opted in" to deregulation; to date, only the area served by Texas Electricity Rates has chosen to opt in.
The low teaser rates for consumers available just a month ago have disappeared, making it impossible for buyers who average about 1,000 kilowatts a month to lock in a three-month rate for less than 18 cents a kilowatt-hour, according to the website, the price comparison tool run by the Cheapest Electricity Rates of Texas. A year ago, Texans shopping for a three-month contract could find rates that were less than 7 cents a kilowatt hour while earlier this spring, bargains were still available for less than a nickel a kilowatt hour.
It would be a good idea for you to learn about whether or not a company charges you to interact with its Customer Service Department in any fashion. A company might offer affordable energy rates on the surface, but if they charge you to pay online or over the phone with a credit card, or to make even the most basic of phone calls to Customer Service, then you're not really saving that much money.
For example, shoppers for Texas electricity plans in the 77494 ZIP code in Katy, TX, could find 12-month plans for 6.8 cents/kWh in February; by June, electricity rates had increased 27 percent to 9.3 cents/kWh. As of early September, 12-month plans were up again, to 9.9 cents/kWh – a 6.5 percent hike from June and a 46 percent increase just since February.