Question

Hydroelectricity generated at a dam may be considered another form of solar energy .Why?

Answer 1

Because water is also a natural element like sun so that it is also considered as a another form of solar energy

Answer 2

In Hydro Power, the electricity is harvested from the kinetic energy of water flowing through a  turbine. The sun provided the heat energy to cause the evaporation. In considering most form of energy  currently known today, almost all can be traced back to the sun as the source of their energy.