Types of Wind Power
Horizontal Axis Turbines use large blades that face the wind to catch and convert into wind power. Commercially, these towers are usually built extremely tall, and have very large blades. While they do have a higher efficiency than comparable Vertical Axis Windmills, they are expensive to transport, construct and maintain
A vertical axis windmill has one large central shaft perpendicular to the ground, and then multiple blades that surround it. Vertical Axis windmills have the advantage of utilizing wind from any direction, which is useful in areas where wind direction is extremely variable, and they are usually located closer to the ground and have a lower minimum airspeed. Their lack of efficiency, as well as high rotational stress are disadvantages
Jet Engine Turbine
A relatively new and experimental design, This turbine was designed to mimic the properties of a jet engine. Created at MIT, and still in testing, this turbine claims to be 3 to 4 times more efficient, have much smaller chance of falling debris, and because of their compact design, could be placed in higher density, and closer to populated areas
Another new and experimental design, the wind belt is designed with economy in mind. As wind flows through the device, it makes a belt flutter. A magnet attached to the vibrating belt moves through an electro magnetic coil, producing energy. The advantage to this type of wind production is very small power generators that can be manufactured extremely cheaply.