A small wind turbine is available in the U.S. from Amazon for just $799 with free shipping. The Sunforce 44444 12Volt 400 Watt Wind Generator is said to be ideal for cottages, 12v battery charging, remote power, back-up power and hobbyists. It has only two moving parts and the installation is said to be fairly simple. In ideal conditions you can expect to get a maximum power of up to 400 watts or 27 amps. The carbon fiber composite blades are quiet during operation. It also comes with a fully integrated regulator which automatically shuts down when the batteries are charged to reduce wear. We featured another small turbine previously, the Air X. It can be purchased for about $520.