Seems they are more concerned with emission levels than people freezing to death due to Federal regulations. Which of course they'll make an example out of Texas to invest in moar green energy.🤡
ERCOT Request letter [PDF] posted on DOE site.

https://www.energy.gov/sites/prod/files/2021/02/f82/ERCOT%20202%28c%29%20Emergency%20Order%20Request%20-%2002.14.2021.pdf