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How much falling water to generate 3KW

  1. Jul 6, 2011 #1
    Hello Forum
    How much falling water would I need to potentially generate 3 KWatts (240 ACV @ 13 A) of electrical energy?

    Assume we have 100% efficient electrical turbine generator.

    Our location is residential so the height drop is restricted to say 5 meters max, the lower the better.


  2. jcsd
  3. Jul 6, 2011 #2


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    Science Advisor

    The change in potential energy in a 5 m height is mgh= m(9.81)(5)= 49.05m joules. How many Joules are there in 3 kw?
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