Energy in. Energy out. Ballance.
the problem can be though that those who put the energy, aren't the ones to get the energy out :D
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Energy in. Energy out. Ballance.
the problem can be though that those who put the energy, aren't the ones to get the energy out :D
Getting anything out (sounds like a heavy task) still requires energy, doesn't it?
depends, once the pipes are laid, the conduit transfers relatively freely.