Can copper be "green?"

[RussellCattle]

2. Another interesting post, as per your usual contributions. I seldom see any mention of the energy use and.....

……carbon emissions from industrial processes (your posts being a significant exception) and share your exasperation with “clean electricity” coming from fossil fuel generating plants.
Did you not once, a while back, make a point about the limitations of wind and tidal power sources for industrial processes that made use of the energy conservation of continuous processes rather than batch process. I think it was in relation to aluminum smelting, though like you have explained here, a series of furnaces is an energy saving strategy.