It depends on where you live, so it is hard to answer that. If you are in the Pennsylvania/Delaware/Maryland area you can take a look at http://www.dnrec.delaware.gov/energy/services/GreenEnergy/Pages/WindInstallers.aspx. If not, you should consider installing it yourself.
If you are talking about wind turbines, then yes.
Most of the time it is found on the hill tops
yes because they have tons of huracanes
Lowes sell wind turbine for homes, they will also contract with workers to come out to your home and install them. Wind turbines are a great way to cut your electricity bill.
A farmer might choose to install wind turbines instead of solar panels if the area has higher and more consistent wind speeds, making wind energy more viable and cost-effective. Additionally, wind turbines can operate at night and during cloudy conditions, providing a more reliable source of energy compared to solar panels which rely on sunlight.
Wind turbines take up around 20 square meters. You will also want to keep them away from trees and other buildings.
country side wind turbines and modern turbines
A wind turbines uses the wind to power an electricity generator.
Horizontal axis wind turbines, modern wind turbines, vertical axis turbines.
Wind energy is made by spinning turbines. The wind spins the wind turbines and they generate energy.
They do install wind turbines on aircraft. The RAT (ram air turbine) is used when emergency power is needed and the engines and auxiliary power unit are non-functional. See link.
The initial cost of wind turbines is high, and the installation of not a simple task. However, for those interested in attempting the task themselves, a good resource is the web domain "PRLog."