When I first started I was using hydro power then I went to solar energy because solar energy is far by the most earths available energy solar and solar is made from the sun and hydro power is made from water the sun is better because went the sun goes down were well be no more ride to go on at the fair and the cost for solar energy is 0.16 and the cost for hydro power is 0.09 I thank the cost for solar energy is more than hydro and hydro powers earth contains hot water. People us water more than 2,000 years. In 1880’s scientists learned that flowing river to and I put in the cost that 7% in us electricity 29%