A windmill converts wind energy into electricity. It seems as though it would be expensive and inefficient to do this on a small scale. Wind is also a somewhat unreliable source of power unless one resides in certain geographic areas.
A windmill is a good alternative to the regular; however, there are drawbacks to windmills. For example, you will not have much power, if any, if there are no winds. Also, you will have to decide whether or not the cost of the windmill and installation is worth all the money you will be saving from power bills.
Only if somebody else is paying for the power to run the fan. So, no.
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30.00 is a good price
It can be used as a windmill generator, and it makes up for a good power supply. It can also be switched out for obsolete electronics.
$40.00 that is my guss.
on a mountain
If you live in the United States, a good place to look is on this website: http://en.wikipedia.org/wiki/Category:Power_companies_of_the_United_States. It is a list of power generation companies in the United States.
To secure a good air flow (or wind) to turn the blades of the windmill.
flat
The best form of solar power generation is through much more advanced and dangerous technology. For your home though, solar panels are a great form of solar power generation, and although not totally reliable, very good for environment and saves costs.
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