I remember a number of times Texas Freepers would make funny of there fellows from other states and the failures of their power grid while bragging about their ERCOT being a superior and you would never see fail like those of other states. How the mighty have fallen. And now our power company here in Southern Indiana has been taken over by a Texas based company and I wonder how long before our system becomes as unreliable as ERCOT
If I remember correctly, ERCOT was designed to operate only within the state of Texas, and not cross state lines. This freed it from US government control. There are a few areas of Texas in other power pools, some in East Texas and part of the panhandle with Oklahoma.
It was found years ago that ERCOT did have a connection with Oklahoma, but this was quickly done away with, and the system modified so no connections could be made again.