In hydroelectric power generation, I've got a pretty good understanding for how kinetic energy from falling water is transformed into electrical energy. But when looking at the entire system, what thing is losing energy such that work can be done by the electricity that is generated?
For example, when electricity is generated from wind power, there is actually a reduction in wind in the surrounding environment, meaning energy is taken out of the Earth's weather systems.
My understanding of hydroelectric power is that it is powered by water rising in the atmosphere (work is being done), condensing at a higher elevation, then flowing to a lower elevation. What is the difference in this whole picture where some of the falling kinetic energy is turned into electricity, vs. all of the water falling unobstructed? Does it move the earth (ever so slightly) because the water was moved upwards, and then has energy removed as it moves downwards?
Thanks in advance; I'm sure I didn't use the right terms for everything, but hopefully the meaning of the question makes sense!