I believe you don’t have knowledge about how to build this kit, that’s why you want to purchase it. However, do you realize how much more you are going to pay, if you get it from shops? I don’t know the exact costs, but this kit is not cheap, and I’ve heard people paid for it like few thousand dollars. Are you ready to waste that much cash, when you can make your system for less than $300 bucks?Seriously, don’t buy wind power generator. I say that wind power systems are now the most cost effective way to take a big bite out of your electric bills. They see wind power systems priced at thousands of dollars and e-mail with complaints. So look, it’s true you can pay thousands of dollars and it’s true you can pay under $200-and I strongly suggest the latter. The technology hasn’t changed since the seventies, but the way we get a hold of the parts certainly has. If you built a wind power system in any other period in history you would need to invest a lot of time and money. A combination of home solar panels wind turbines can produce much of the power required by the average home. Small wind powered turbines are manufactured by a number of companies and can be readily set up either as a rooftop wind turbine or mounted on its own small tower. A tower height of 30 feet is often recommended. If there’s not enough wind then your next best alternative is using solar power - something else that the Earth4Energy guidebook can assist you with. ? You will also need to ensure that the part of your property where you are considering basing the wind turbine has reasonably low wind interference.