Hydroelectric Power Plant?

Question

What are some available resources?

What are a few environmental advantages/disadvantages, and what are some economic factors?

Thankee :D

Answer 1

Resources - water, you gotta have water and it needs to fall from a height to drive the generators.

Advantage - clean (no greenhouse gases), reservoirs provide water during dry periods.

Disadvantages - water source must be constant (only about 10% of US power comes from hydro) and you have to dam up a river or two.

Economics - well, it takes a lot of concrete (generally) but the structure tends to lasty a while.  (See the Hoover Dam)