ERCOT is generating 28.6% from wind in 2023. It is getting so high, that for the late night hours, demand is so tiny that some 5-10% of the wind energy goes nowhere -- a phenomenon called 'curtailment. The occurs because the baseload nuclear and the combined heat and power thermal generators are already operating at minimal levels, and supply way outpaces demand (usu. early in the wee hours of the morning). EIA indicates that this curtailment will likely increase. For now, its about as much as a typical nuclear power plant generates.

https://comptroller.texas.gov/economy/economic-data/energy/2....