Windmill generators for home use are not only a very good source of free energy, they can be made surprisingly cheaply.
For less than $200 you can source the necessary components. Unlike commercial windmill generators which can costs several thousand dollars.
Take a look at my squidoo page for more information on diy windmill electricity and how to make a windmill generator.
It includes info on considerations, government grants/subsidies/tax relief, step by step video instructions plus a whole lot more.
Take a look
http:/www.squidoo.com/DIY-WINDMILL-ELECTRICITY-HOW-TO-MAKE-A-WINDMILL-GENERATOR