High-tech wind turbines.

Turbine Components

Horizontal wind turbine components include:

  • A blade or rotor, which transfers wind energy into the rotational shaft.
  • A drive train and generator.
  • A tower that supports the rotor, drive train and generator.
  • Other equipment, including controls, electrical cables, ground support, etc.

Wind Turbine Size and Power Ratings

Wind turbines are available in a variety of sizes power ratings. A small wind machine has rotors between 8 and 25 feet in diameter. It stands upwards of 30 feet and can supply the power needs of an all-electric home or small business. Utility-scale turbines range in size from 50 to 750 kilowatts. Single small turbines, below 50 kilowatts, are used for homes, telecommunications dishes, or water pumping.

Turbine Configurations

Wind turbines can be grouped together into a single wind power plant—also known as a wind farm—to generate bulk electrical power. Electricity from multiple turbines can fed into the utility grid, just as with conventional power plants.

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