Texas has electricity consumption of $24 billion a year, the highest among the U.S. states. Its annual consumption is comparable to that of Great Britain and Spain, and if the state were an independent nation, its electricity market would be the 11th largest in the world. Texas produces the most wind electricity in the U.S., but also has the highest Carbon Dioxide Emissions of any state.[2] As of 2012, Texas residential electricity rates ranked 31st in the United States and average monthly residential electric bills in Texas were the 5th highest in the nation.[3]

Variable-rate supply plans, as the name suggests, have a rate that varies based on the market price of electricity. Seasonal and market fluctuations can affect supply rates. While variable-rate supply plans can allow you to take advantage of market-price lows, there is the possibility of paying for high supply rates when demand is at its peak. These plans offer great flexibility.
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.