Rooftop wind turbines are fast becoming the answer for thousands of homeowners. These wind turbines for houses can be built with ordinary materials for as little as $200 and can be built and installed in a weekend.
Wind turbine blades are made out of pvc drain pipe. One 6" x three foot section of pipe can be quartered down to four pieces which are then shaped into turbine blades. The natural cup of the pipe forms the camber necessary just as seen on an airplane propeller.
DC electric motors can be found on E-Bay for less than $50. The pvc wind turbine blades are connected to these motors which in turn are connected to a battery system to collect the wind generated power.
The whole concept is amazingly simple and most anybody can accomplish this task in a weekend. There are many wind turbine kit plans available today.
The two best and most popular are Make Power At Home and Earth4Energy. These kits are instructional manuals only, but are complete and very thorough. They also offer online support if you need more help than what is in the kit.