The average prices shown in these calculations represent average annual prices per kilowatt-hour (kWh). Some REPs charge rates that vary by season or usage level. As a result, the actual average price listed on a customer's bill for any given month may differ from that listed here, depending on the usage of the customer and the actual rates charged during that month. Please see the REP's Terms of Service document for the actual rates that will be charged by the REP.
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.