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  2. Wind turbine - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine

    [100] [101] Ice accretion on turbine blades has also been found to greatly reduce the efficiency of wind turbines, which is a common challenge in cold climates where in-cloud icing and freezing rain events occur. [102] Deicing is mainly performed by internal heating or in some cases, by helicopters spraying clean warm water on the blades. [103]

  3. Wind power - Wikipedia

    en.wikipedia.org/wiki/Wind_power

    The energy needed to build a wind farm divided into the total output over its life, Energy Return on Energy Invested, of wind power varies, but averages about 20–25. [ 85 ] [ 86 ] Thus, the energy payback time is typically around a year.

  4. Wind turbine prognostics - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine_prognostics

    Early small scale onshore Wind Turbines. The growing demand for renewable energy has resulted in global adoption and rapid expansion of wind turbine technology. Wind Turbines are typically designed to reach a 20-year life, [1] however, due to the complex loading and environment in which they operate wind turbines rarely operate to that age without significant repairs and extensive maintenance ...

  5. Wind energy policy of the United States - Wikipedia

    en.wikipedia.org/wiki/Wind_energy_policy_of_the...

    Wind turbines have some of the lowest global warming potential per unit of electricity generated: far less greenhouse gas is emitted than for the average unit of electricity, so wind power helps limit climate change. [62] Wind power consumes no fuel, and emits no air pollution, unlike fossil fuel power sources. The energy consumed to ...

  6. Wind-turbine aerodynamics - Wikipedia

    en.wikipedia.org/wiki/Wind-turbine_aerodynamics

    Wind-turbine blades in laydown yard awaiting installation. The primary application of wind turbines is to generate energy using the wind. Hence, the aerodynamics is a very important aspect of wind turbines. Like most machines, wind turbines come in many different types, all of them based on different energy extraction concepts.

  7. History of wind power - Wikipedia

    en.wikipedia.org/wiki/History_of_wind_power

    The MOD-2 wind turbine cluster of three turbines produced 7.5 megawatts of power in 1981. In 1987, the MOD-5B was the largest single wind turbine operating in the world with a rotor diameter of nearly 100 meters and a rated power of 3.2 megawatts. It demonstrated an availability of 95 percent, an unparalleled level for a new first-unit wind ...

  8. Wind power in the United States - Wikipedia

    en.wikipedia.org/wiki/Wind_power_in_the_United...

    Since Iowa adopted a renewable energy standard in 1983, the wind power industry has generated over $19 billion in investment. [74] The second concrete wind turbine tower to be built in the U.S., and also the country's tallest (377 feet) at the time built, is in Adams county. The tower was completed in the spring of 2016. [75]

  9. Wind turbine design - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine_design

    An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub

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