Renewable energy is a source of energy that will never run out like wind,solar and hydro . Non renewable energy is harmful to earth because it produces greenhouse gases which cause climate change effecting plants,animals and people . Renewable energy will replenish it self.
One of the renewable sources of energy is hydro. Hydro work by water moving through a pipe called penstock. In the penstock water build pressure. When the water hit the water turbines the water turbine spins which make power then send it to the power grid. The water then goes draft tube and back in the water
Advantages of hydro
The advantage of hydro that dam don't produces greenhouse gases. Also water doesn't cost anything so they can give a city power and they don't have to spend a penny. another advantage of hydro is that some dam are safe for fish. Also hydro is a big source of energy.
Disadvantage of hydro
The disadvantage of hydro is that dam are harmful to wildlife around it like tree and fish. Also it take a long time to build and the things used to make a dam produces greenhouse gases. The flood from the dam destroy thing around it like house crops. Another disadvantage of hydro is it might cause earthquakes.