The Texas Two-Step Carbon/Renewable Grid Mix™ is an energy product descriptor that refers to ERCOT's 2021 breakdown of fuel sources on the Texas electric grid, which revealed 61% of the fuel source coming from fossil fuels and 28% from wind and solar sources, while the remaining portion is derived from various sources. All fuel sources vary on a daily basis. Texas Two-Step Carbon/Renewable Grid Mix™ is a trademark of Constant Energy LLC and is used with permission.