• ℕ𝕖𝕞𝕠
    link
    fedilink
    arrow-up
    13
    ·
    1 year ago

    In addition to what everyone else already said, it takes a tremendous amount of energy to pump water uphill.

      • ???@lemmy.dbzer0.com
        link
        fedilink
        arrow-up
        1
        ·
        1 year ago

        Why? They have dump trucks and dams in Africa, you know. Or did you think this was before Africa became the world’s fastest-growing and biggest market for cell phones?

      • marsokod@lemmy.world
        link
        fedilink
        arrow-up
        1
        ·
        1 year ago

        Even as a slave, the cost of a human work is magnitudes above the cost of using a pump with petrol. A slave may be able to output ~1kWh per day, that’s mostly a few 10s of cents anywhere. Can you feed anyone on that?