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Mendota Hills Wind Farm in northern Illinois. Wind power in Illinois provided nearly 10% of the state's generated electrical power in 2020 powering 1,231,900 homes. [1] At the end of 2020, Illinois had 6,300 megawatts (MW) of wind power installed, ranking fifth among states for installed wind turbine capacity. [2]
The Bishop Hill Wind Farms are three Illinois wind farms containing a total of 201 turbines in Henry County. Developed in 2012 through 2018, as a complex the three wind farms have a nameplate capacity of 424.0 megawatts of electricity.
As of 2007, wind energy represented only 1.7% of Illinois's energy production, and it was estimated that wind power could provide 5–10% of the state's energy needs. [ 172 ] [ 173 ] Also, the Illinois General Assembly mandated in 2007 that by 2025, 25% of all electricity generated in Illinois is to come from renewable resources .
The speed at which frostbite sets in depends on the combination of wind and air temperature. A wind speed of 15 mph and temperature of 15 degrees can make it feel like zero degrees, for instance.
The reference wind pressure q is calculated using the equation q = ρv 2 / 2, where ρ is the air density and v is the wind speed. [ 19 ] Historically, wind speeds have been reported with a variety of averaging times (such as fastest mile, 3-second gust, 1-minute, and mean hourly) which designers may have to take into account.
Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, [2] which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, [3] on a constant pressure surface of 300 or 250 hPa show where the jet stream is located.
Screenshot of the Global Wind Atlas website (version 2.2) The Global Wind Atlas is a web-based application developed to help policymakers and investors identify potential high-wind areas for wind power generation virtually anywhere in the world, and perform preliminary calculations. It provides free access to data on wind power density and wind ...
The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds.