There are two wind turbine designs. The mast-mounted is a free-standing, 6kW-producing machine that is erected in an exposed position and is very effective. The roof-mounted is less so and only produces up to 2kW. While more than solar panels, the disadvantages may be too overwhelming for some homeowners and they find the sight of one unsightly. I have personally managed to build my own home DIY renewable energy system by following an online system which you can find out more about at my website link below.