They just had a big power crisis (summer AC, maximum GWh usage) and survived.
https://www.caiso.com/Documents/intensifying-heat-leads-to-a...
There is some silliness with the state government around renewable power, but it isn't like they've banned it. And if they did it would take #2 California a long time to catch up.
https://insideclimatenews.org/news/09032023/inside-clean-ene...
The question then is really whether Texas has a better chance of expanding capacity fast enough to meet its needs than other states that are famously more restrictive around new construction and environmental impacts. I don't like the politics here and I still think the answer to that is clearly yes for this purpose.
Whoever mentioned water has a point though.