List the basic parts and a pumped storage hydroelectric dam and ...

[Diane]

List the basic parts and a pumped storage hydroelectric dam and explain how it produces electrical power.
 
  What will be an ideal response?

Question 2

Explain why a run-of -the-river (ROR) is considered more environmentally friendly than a traditional hydroelectric dam with a large reservoir.
 
  What will be an ideal response?

[tsternbergh47]

Answer to Question 1

A pumped storage hydroelectric dam uses two reservoirs; one is located at a much higher elevation than the other. The lower reservoir has a turbine and generator as in a conventional dam but the generator can double as a motor to pump water to the upper reservoir during low electrical peak hours. During the highest peak times, water is released from the upper reservoir to generate power.

Answer to Question 2

The ROR type dam has only a small effect on river flow and it does not require a large reservoir of water like the conventional hydroelectric dam.