Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Renewable Energy (Gravitation)

  1. May 7, 2010 #1
    How the mechanism of gravity can converted to the electric energy?How much the power result?
    Please shared to me, if you have any literature..
  2. jcsd
  3. May 7, 2010 #2
    You can use gravity in the form of a waterfall. But you can't make a stand alone system without the waterfall. That would mean an endless cycle with only energy output. You are defying the first law of thermodynamics.
  4. May 7, 2010 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Google "hydroelectric power" for information. The simple answer is: falling water causes the turbine to rotate in a generator.

    According to this Wikipedia article, the largest hydroelectric plant currently produces around 20,000 MW. There are also smaller capacity plants.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?