If a new energy source becomes available, so 10x as much energy as before gets put into aluminum smelting, you end up with 10x as much aluminum.
Bitcoin "mining" does not work that way. The computations are an artificial hurdle erected to hit a predetermined level of scarcity/difficulty. If 10x as much energy as before gets put into bitcoin "mining", difficulty levels will adjust, and you end up with exactly the same amount of bitcoin as before.