This has to be a troll post.
new oil burners? no one in the US is building new oil burning power plants. They are incredibly cost inefficient based on their fuel cost and their pollution levels are absurd.
Texas is theoretically getting a new nuclear plant. We will see if it actually gets built.
Dow, X-energy to drive carbon emissions reductions through deployment of advanced small modular nuclear power
As Brisket stated, Transmission and Distribution losses are nowhere near 50%. Here is a citation for Brisket's posted 5%.
Frequently Asked Questions (FAQs) - U.S. Energy Information Administration (EIA)
The 2 areas ERCOT could easily import from are SPP (lots of wind) and MISO. Both of those have reserve margin capacity that ERCOT could import from. In theory, ERCOT could import more from Mexico as well, but that is far more complicated, from a political perspective. CFE (Mexico Electric Utility) already does importing and exporting across the small DC Tie.