A wind turbine's electricity generation varies significantly based on size and wind conditions, but typical modern utility-scale turbines generate between 2 to 3 megawatts (MW), equivalent to 2000-3000 kilowatts, while smaller residential turbines might produce only a few kilowatts.
In 2012, two wind turbine blade innovations made wind power a higher performing, more cost-effective, and reliable source of electricity: a blade that can twist while it bends and blade airfoils (the cross-sectional shape of wind turbine blades) with a flat or.
The United States Department of Energy reports that most modern land-based wind turbines have blades of over 170 feet (52 meters), resulting in a total rotor diameter longer than a football field.
Standing over 260 meters tall when fully assembled with blades stretching 107 meters long—each longer than a football field—the Haliade-X has a rated capacity of 12 megawatts (MW), enough to power more than 16,000 average European homes with a single unit.
A single unit can generate 68 million kilowatt-hours of clean electricity annually, enough to power approximately 40,000 households. The turbine will undergo real-world testing in the waters off Yangjiang, in south China's Guangdong Province, according to China Huaneng Group.