Nothing I said in my comment is incorrect. Texas has 5 different connections with the other grids and can import/export through them. But they are irrelevant right now because the other grids do not have enough spare capacity to send to Texas.

>If Texas was part of the Western grid they could be drawing excess hydroelectric power from the pacific northwest right now for example. Texas also could have contributed to help the California power shortages last year.

No. That’s not how the grids work. Just because Oklahoma and Washington are part of the same interconnection, that does not mean that people living in Tulsa can pull power as needed from a dam in Washington, which is why Oklahomans are struggling with power outages today as well. Most power still must be generated locally. Long distance transmission is difficult and inefficient, and often requires converting to DC just like a grid-to-grid connection requires, so you have the same issues as you have when you’re on separate grids.