A list of small wind turbine equipment providers: http://www.awea.org/faq/smsyslst.html
http://www.windturbine.net They have a 10 kW turbine. Calls the
Jacobs the "Cadillac" of wind turbines.
http://www.solarwindworks.com They have a 6 kW wind turbine.
http://www.magenn.com/products.php Mageen air rotor wind turbine.
Wind maps for
http://www.wind.appstate.edu/windturbines/windturbines.php
This is file http://www.roperld.com/science/SmallWindTurbines.htm
Home wind turbines may not be effective.
L. David Roper, http://www.roperld.com/personal/roperldavid.htm