A vertically arranged water tower system is operated using a long buoyant device that spans upper and lower chambers thru a watertight compressible bellows. Raising the buoyant device by controlling the water level in the water tower creates a void in the lower chamber, equal to the volume of the buoyant device no longer in the lower chamber. The void is created without displacing water in the lower chamber. Water or a buoyant object fills the void from slightly higher level than the lower chamber. After reconnecting the upper and lower chambers, water is extracted and released near the top of the upper chamber and the buoyant device is lowered. Released water is used for energy and power productions and recycled.