I thought you could only shut down an aluminium smelter for a couple of hours. It’s essential they keep the pots (?) hot constantly or they get ruined and the p

I thought you could only shut down an aluminium smelter for a couple of hours. It’s essential they keep the pots (?) hot constantly or they get ruined and the plant is then offline hundreds of millions to repair. If this is correct then solar would be a terrible power source for smelting. Good power sources: hydro, geothermal. Which is why we see smelters in places with hydro and geothermal. Australia should go nuclear. Plenty of places to put plants. A dozen plants would generate all the electricity they need and they can stop burning coal.