Get a long skinny tube, put the bottom of the tube in contact with something like water, and like magic, the water will move up the tube. By itself.
Plants do this every day. Water gets sucked out of the ground without any motive force.
There’s no external energy source. And yet, mass, weight, is moved. Moved uphill.
Every hour, trillions of tons of water (and etc) are being moved against gravity, uphill, just because the tubes are quite skinny.
Even if, the Sun, is the energy source, why can’t we make Capillary Power Plants (pun)?