Watt do you Know? Take our Energy Quiz!
(Page 3 of 8)
June 9, 2008
By Megan Phelps
Chances are, you're hearing a lot more about wind power, because it's growing so rapidly, as is solar. But right now in the United States, these still produce a very small share of our electricity, and both are well behind hydropower.
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4. So how much electricity do you use? The average American household uses this many kilowatt hours (kWh) at home each year:
A. 100 kWh
B. 1,000 kWh
C. 10,000 kWh
D. 100,000 kWh
Answer: C. About 10,000 kWh per year.
Here's a chart from the EIA that shows exactly how that breaks down. Each kWh shows up as only a few cents on your electric bill (the national average is 10 cents) but the pollution adds up fast. Electricity is the largest source of U.S. carbon dioxide emissions, closely followed by transportation.
So how much carbon is that? You can figure that every kWh on your bill amounts to between 1 and 2 pounds of carbon dioxide. (Each kWh generated produces an average of 1.3 pounds of carbon dioxide, but it depends on the energy source. Coal produces closer to 2 pounds.)
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