Heavy elements come from supernova explosions, a phenomenon I haven't seen any electric bullshit universe proponents try to explain.
They claim stars are powered "by the galaxy", birkeland currents. But what the shit powers the birkeland currents then in their model? Never seen any electric proponent try to explain that either. Stars - even small ones - are ludicrously energetic objects, all that energy must come from somewhere, if it's not from fusion processes in the core of stars. Apparantly it just appears out of thin air in the EU model. Kinda inconsistent with pretty much everything we know about physics on a fundamental level, really...
I find it a lot more probable the stars of the galaxy are what powers the birkeland currents, rather than the other way around.