[jallen_dot_dev]

> The question is will there be a way to mine more difficult problems using less power. That is the only way bitcoin power usages stops growing (slowly).

That's not how it works. The whole point is to spend power (work).

If there was some breakthrough that allowed finding hashes with 10x less electricity, then the network wouldn't burn 10x less electricity. It would instead find 10x more hashes.