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For example, assuming no wind, one gets the following results for power delivered to the pedals (watts): 175 W for a 90 kg bike + rider to go 9 m/s (32 km/h or 20 mph) on the flat (76% of effort to overcome aerodynamic drag), or 2.6 m/s (9.4 km/h or 5.8 mph) on a 7% grade (2.1% of effort to overcome aerodynamic drag).
They usually produce between 500 W and 10 kW, with some as small as 50 W. The Canadian Wind Energy Association considers small wind turbines to be up to 300 kW, [1] while the IEC 61400 standard defines them as having a rotor area smaller than 200 m 2 and generating voltage below 1000 Va.c. or 1500 Vd.c.
In addition to the megawatt wind farms, community scale single wind turbines of from 250 kW to 750 kW are typically 50 meters high, and residential or farm wind turbines are typically 15–40 m (49–131 ft) high. To address these markets, maps are available showing wind potential at 30 m (98 ft) [7] and 50 m (160 ft). [8]
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For power contracts made in the year 2014, the average price of wind power fell to 2.5¢/kWh. [42] The capacity factor is the ratio of power actually produced divided by the nameplate capacity of the turbines. The overall average capacity factor for wind generation in the US increased from 31.7% in 2008, to 32.3% in 2013. [43]
The Bishop Hill Wind Farms were developed by Invenergy. [4] They are officially designated as Bishop Hill I (98 turbines), opened in 2012; Bishop Hill II (50 turbines), opened in 2012; and Bishop Hill III (53 turbines), opened in 2018. Invenergy has sold 80 percent of Bishop Hill III to the WEC Energy Group. [5]
The wind turbines were manufactured by Gamesa, each with a hub height of 92 meters and rotor diameter of 114 meters capable of generating up to 2.0 MW of electrical power. [ 4 ] The completed facility consists of 104 turbines and their foundations, underground collection lines, electrical substation , maintenance building, access roads, and ...
The wind farm is designed to produce 35-MW of electricity, enough to power 16,000 homes in New York. Power is being sold into the NYS ISO grid for sale to retail customers. This is one of the largest urban wind power developments in the world, and its wind turbines are harnessing the power of the steady winds that blow from Lake Erie. [7]
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