Yeah, absolutely no way to bring down power prices when compared to China. They installed over 400 GW (peak) of new renewable capacity in 2025 and show no signs of intending to stop.
But still, it's possible that a smaller, dirtier build-out in the US will significantly drop prices relative to today, and certainly relative to the rest of the world (which is failing spectacularly at building out power infrastructure).
But yes, the only way you're ever going to smelt Aluminum in the US again is if you have customers who can't/won't buy Chinese Aluminum. And even then, worth keeping an eye on the richer Arabs states. They're quickly roofing over their deserts, and certainly don't worry about local NIMBY opposition to power lines...