William Kamkwamba: How I built my family a windmill

A moving and inspirational story. How William's need led him to do something about it. In comparison to living in a technology driven society. We are dependent on what is available for us. I only wonder about why not create my windmill or solar energy to generate electricity but not do so. Rather search on how much a solar costs to install? William as a result of his need created something useful for his family that produced electricity for their home at the age of "14".