How does solar energy compare with other renewable energy forms?
Greener and easier.
Some other renewable energies are air energy, wave energy, water (water falls or/and river) energy, biomass and nuclear energy.
Air energy requires huge area of lands. Also costs much more than solar one. Also, it diverts the flow of air which may affect local ecology and ecosystem negatively. May even affect the rainfall.
Wave energy may change the flow of wave's direction, again comes the problem of negative impacts on ecosystem under water.
Water energy requires making a dam which requires local people to give up their lands animals to leave their homes.
Biomass requires large plant area.
Nuclear power is very costly and unstable.
Solar energy is by far the easiest, cheapest, most environment friendly energy source.