Science people: debunk this (OP image fixed)

[Eussorus]

What if the balls were filled with helium?

they'd speak like a elf with a step ladder.

[Ad Bot]

[(Fallen)]

Long story short you would be better off powering a battery with a exercise bike then this. If the seal would work it would generate really slowly. With an exercise bike its more electricity and you get an exercise.

[JimJam]

A more practical idea:
hyrdo-electric generator from incoming water pipes/outgoing sewer from a house.

[Port]

A more practical idea:
hyrdo-electric generator from incoming water pipes/outgoing sewer from a house.

If you mean what I think you mean, you wouldn't gain energy. You'd still have energy costs to transport the water.