Which ones the best? Like all things energy, it depends. Do you prefer predictability, or do you like the idea of potentially saving some cash by monitoring the market? Our (albeit conservative) recommendation: Fixed rate is probably best. Energy prices are on the rise — the U.S. Energy Information Administration predicts a 3 percent increase in residential electricity prices in 2018.
There are many different options for term lengths in the Texas energy market. Different term lengths often have different price points, so if you’re more flexible with the length of your contract, you could get a cheaper rate. Contracts with shorter term lengths are great if you prefer to avoid a long-term commitment while longer contracts usually provide the benefit of longer-term price stability.
CenterPoint Intelligent Energy Solutions LLC, IES, which manages TrueCost, is not the same legal entity as CenterPoint Energy Resources Corp. (CERC) or CenterPoint Energy Houston Electric, LLC (CEHE), nor is IES regulated by the Railroad Commission of Texas or the Public Utility Commission of Texas. You do not have to buy products or services from IES in order to continue to receive quality regulated services from CERC or CEHE.
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 2002-2014 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. 
Since 2002, approximately 85% of commercial and industrial consumers have switched power providers at least once. Approximately 40% of residential consumers in deregulated areas have switched from the former incumbent provider to a competitive REP. REPs providing service in the state include: AmeriPower, TriEagle Energy, Acacia Energy, Ambit Energy,Breeze Energy, Clearview Energy, Green Mountain Energy, Conservice Energy, Iluminar Energy, Now Power, Snap Energy, Entrust Energy, Bounce Energy, Champion Energy, Shnye Energy, Cirro Energy, Direct Energy, Dynowatt, First Texas Energy Corporation, Frontier Utilities, Gexa Energy, Glacial Energy, Just Energy, Kinetic Energy, Mega Energy, APG&E, Adjacent Energy, Spark Energy, StarTex Power, Stream Energy, Tech Electricity, Texas Power, TXU Energy, XOOM Energy and 4Change Energy.
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.
In this free market competing electricity retailers buy electricity wholesale from private power generators to sell at retail to around 85% of Texas residents. The partnership between generators and retailers is governed by the Electric Reliability Council of Texas, or ERCOT, which attempts to balance the power grid’s electricity supply and demand by purchasing small amounts of electricity at 15-minute intervals throughout the day.