Mega city? It "only" takes about 8 million metric tons of aluminium to put a conductive aluminium loop of 1Ω resistance around the moon's equator*, solving all

Mega city? It "only" takes about 8 million metric tons of aluminium to put a conductive aluminium loop of 1Ω resistance around the moon's equator*, solving all the energy problems that the poles are usually supposed to solve. While this is way more than we can do any time soon**, that's the kind of mass you'd need to get up there to build the infrastructure for a colony of just high tens of thousands to low hundreds of thousands of people, which is well short of "mega city". * https://www.wolframalpha.com/input?i=%28%28circumference+of+the+moon+*+resistance+aluminium%29%2F1Ω%29*%28circumference+of+the+moon%29*%28density+aluminium%29 https://www.wolframalpha.com/input?i=%28%28circumference+of+... ** Last I looked, SpaceX's website was listing 100 million USD per ton to the moon; your guess is as good as mine if or when they'll deliver anything close to the price Musk suggests for serious colonisation efforts