The US is currently a net oil exporter, and has been for a few years.
Now of course that's not the whole picture, but if push came to shove, the US could achieve energy independence (at least technologically, if not poitically).
True, the US could supply all of its energy needs through great effort and by making its population pay much higher energy prices. In contrast, if a country were to build around e.g. solar, and then all countries that made the panels embargoed them, the price of electricity would merely stop falling.
I think whether the economies of scale and profit incentives get fucked up depends on the size of the before and after markets we are talking about.
For these to collapse, I believe we would need the international market for US oil specifically to be substantially larger than the entire domestic market for any oil. Is that true?
Now of course that's not the whole picture, but if push came to shove, the US could achieve energy independence (at least technologically, if not poitically).