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450 400 350 300 FIGURE 10.15 250 World wind capacity (GW) The world's wind power 200 capacity continues to grow 150 rapidly, with capacity in

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450 400 350 300 FIGURE 10.15 250 World wind capacity (GW) The world's wind power 200 capacity continues to grow 150 rapidly, with capacity in 2015 100 exceeding 430 GW peak power, the equivalent of 430 50 large nuclear or coal-fired 0 power plants. However, wind's 10 200 2002 2003 200 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 variability reduces global 20 average wind power to about Year 120 GW.l} 2} 3} 4} Download the latest version of the US. Energy Information Administration's spreadsheet listing electric generating units in the United States {eia.gow'electricityfcapacity}. Find {a} the largest hydroelectric installation in your state [you may need to add together multiple generating units at the same site}; {b} the smallest hydroelectric installation in your state; and {c} the total hydroelectric generation capacity in your state. Estimate the number of powerboats operating on Lake Mead1 the reservoir above the Hoover Dam. and assuming an average of l horsepower per boat1 estimate the total power output of'all these boats. [s it at all comparable to Hoover Dam's approximately 2 GW of'electric power output? If it is1 then the indirect environmental impact of'this dam may be comparable to that of'a fossilfueled plant with the same output! Tt'ou might start with the National Park Service's Environmental Impact Statement for its Lake Management Plan for Lake Mead. Has the growth of wind energy shown in Figure \"115 continued beyond El? Back up your answer with data from an authoritative source. Find the total annual gasoline consumption in the United States. along with the total area of the country's existing cropland. |Clue study suggests that ethanol production from com in the United States gives an annual yield of 71 (3.] of ethanol energy per hectare {metric acre; ll]4 m2 } of cropland. Use your ndings1 along with Table 3.3 to estimate the percentage of US. cropland that would be required to replace all US. gasoline with corn based ethanol

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