If the US refuses to participate in the energy revolution, then it'll be a Russia-tier power within a generation.

Empirically, Europe's embrace of the "energy revolution" has done far more to bring it closer to Russia, making energy 2-3x more expensive and gradually destroying Germany's industrial base. So much so that it can't even produce as many munitions as Russia, in spite of a GDP around ten times larger.

No, the energy revolution in question is renewables, specifically solar plus batteries. In no sense has any European embrace of renewables (to the extent that it exists (or does not exist)) in any given country pushed them further towards Russia, the run-down gas station of the world. It is pushing them closer toward China, which is almost certainly as bad for Europe in the long run as relying on Russia or the US, but it's not like Europe was competitive in the non-renewable energy sector either, outside of Norway.

Give Germany time. The US and Russia have forced them to rearm.