Is water energy special to us?

Once the dam is built, the energy is virtually free, no wasted or polluted. Hydroelectric power stations can increase to full power very quickly unlike the other powers, and we use it every day life. It’s reliable than wind, solar, or wave power.
But dams are very expensive to build, (especially the big ones) and it affects the animals when people builds dam. Pollution happens when chemicals harmful to living things get into the environment. After, the dam’s built, there’s no pollution& wasting happens.
Secondly, Hydroelectric is fastest- producing power, hydro electric power stations can increase to full power very quickly unlikely the other powers, so we use it the most of the time
We use hydroelectric power like everyday life think of it. At your home, school, dad’s office etc. I hope we don’t waste it. All we can do is turn of the lights when you don’t use it, and if it’s bright enough, just don’t turn it off.
If in the future, Earth gets warmer and warmer, we will not have enough water to produce electricity, so we should not pollute the water source/ power.
By: Joon Hyuk