Not only did solar and wind provide the vast majority of power during the day today, as I write this comment coal is neck-and-neck with storage as an energy resource - i.e. power that was saved during the day because it was so sunny.

Coal simply makes no economic sense as a power source for electricity generation anymore. Natural gas is still needed as base load for when renewables are insufficient, but in perhaps the "free market ideological capital" of Texas, the trend towards renewables + storage is simply the economic choice.