[snowwindwaves]

Electrical engineers wouldn't build a power line to Texas with a capacity of 5000 MW and then put intertie hardware such as phase shifters or ac-dc-ac converter with capacity of 1000 MW on the end of it. So it is likely that the transmission capacity and intertie capacity are exactly the same!

[ineedasername]

It's not the capacity of the converter, it's the efficiency of the conversion. There's some loss involved.