Can add some finer details to that. This was not Texas first time in this rodeo. Prior -- in Feb 2011, we had a mini-test run. Deep Freeze, etc. Super Bowl in town, no less. Our existing Coal plants froze, and things were not yet so dependent on Gas. Major plants failed, and they had to re-route power (from the poors) to the Super Bowl site.
The take away was that those OLDER Coal Plants -- we went back and "Winterized" (better insulation on valves, more heat strip on piping -- on and on). Those ones stayed on during Winter Storm URI -- Feb 2021. However, they were older and dirty and some were already taken off-line awaiting their fate by 2021. (Videos below). The new(er) plants and the new(er) Frack Gas sites -- had not been through the Feb 2011 Deep Freeze. So they tended to Freeze. Not a big Coal fan -- but "only" about 30% froze-Failed. 70% made it through.
Meanwhile, typical review numbers was Gas was around 40% Fail, and Nukes were 25% Fail.
Here is the funny part, will probably get some howls on here . . .
Meanwhile Solar PV jumped UP. PV produces more when Cold, and Reflected Light from Snow increased production). So now Texas has built a LOT more Solar PV and is now leading the US in Solar PV.
Back in 2021, Governor Abbott and his Frack Gas buddies looked at the numbers, and that is when the Lies started. Wind was not even slated for much to fail from. Winter and Summer are our "slow" Wind times. We plan Big Wind for Spring, Fall, and more at night than day.
These are a couple of "my" older plants. We actually had them fixed up with Deep Freeze and (layers and layers of) EPA Air Compliance.
Big Brown Demolition (wait for the cattle moooo)
Monticello
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Grid Attachment for Texas is partly a factor of distance. Not just the political. We can run High Voltage AC only so far. Will do some details on HVDC -- on another comment I think you have . . .