Question:

Building Windmills for Power?

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I was wondering if Building Windmills for Power is worth it? How much money can I save?

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  1. Yes, Building windmills for powers is worth it if you get the right plans, I built My Windmill With The Plans From This Site: http://instantproducts.info . It only took me 1 afternoon to do the entire thing. My electric bill went from 400 dollars a month to 50 dollars a month. I save 350 Dollars every month now! Give it a Try!


  2. Yes its worth it.

    You can sell your extra power to electric company's.

  3. most definitely...theyre building three on our ranch...times are a changing...itd be better also if some ...bad stuff happens in our country's future.

  4. doug selsam go look him up

    good luck

  5. Building a windmill is not necessarily a good thing. You have, first of all, to have an idea of how much power you want, and how much power you can extract.

    You have to find a wind map (this one is for Europe, but you can find them for any place in the world http://www.windpower.org/en/tour/wres/eu... to see if you have powerful winds. If you don't belive the map, you can measure the winds by yourself, you can buy some anemometer, or even contract a company (depending on your budget).

    When you finally know the average windspeed you get per day, you should try the following calculation:

    P = 0.5*(air density)*(pi*(rotor radius)^2)*(windspeed)^3

    (air density - between 1.0(kg / cubic meter) and 1.225 for most places

    pi - 3.1415926535... (always, hehe)

    rotor radius - in meters, usually it's hard to build a cheap rotor with 2 or more meters in radius

    windspeed - in meters/second

    P - power in Watts)

    This is the IDEAL power one can extract with a wind turbine in your area. Now, a factor related to your project and building habilities:

    Theoretical limit: aprox 57% of the ideal power

    Commercial wind turbines: between 40-50% of the ideal power

    Home made: <30% of the ideal power

    If you are going to buy a commercial wind turbine, keep in mind that the rated power (the one that they specify the turbine) is the power extracted when the wind is about 12m/s, and that is A LOT for most places in the world.

    Now, you can calculate if it's worth. Usually it's worth in places near the sea, where you have relatively strong winds for a long period of time. So take care when using your precious money, because if you don't analyse the investment carefully, you may be spending it on a beautiful lightning rod!

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