Most onshore wind turbines have a capacity of 2-3 megawatts (MW), which can produce 6 million kilowatt hours (kWh) of electricity every year. Over the course of a year, a turbine will generate about 30 of the theoretical maximum output, known as the capacity.
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A single onshore wind turbine that can handle 2-3 megawatts pumps out about 6 million kilowatt hours (kWh) of electricity each year. This much power keeps roughly 1,500 average homes running [-3] [-4].
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As of March 2025, China has emerged as the world's offshore wind powerhouse — growing from under 5 GW in 2018 to 42. 7 GW in 2025 (50% of global capacity). Offshore wind could play a role in decarbonizing China's coastal provinces, but fossil fuels stand in the way.
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The rotor connects to the generator, either directly (if it's a direct drive turbine) or through a shaft and a series of gears (a gearbox) that speed up the rotation and allow for a physically smaller generator. This translation of aerodynamic force to rotation of a.
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