re: Note:
Seems like a good idea.
It say you get 6 KWh per lb of aluminum.
If I'm remembering correctly it costs something
like 15 kwh per Kg [or about 6.8 kwh per lb]
now I could remembering this wrong, maybe it was
around 15 Kwh per lb.
But even in the worse case it seems like a reasonable
converison loss [if it's only .8 kwh per lb loss it's much better of course- and considering the apparent minimum of heat involved it might be on the low end] in terms of getting a easy, safe, and portable source of energy.