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EIA: US energy-related CO2 emissions down 2.4% in 2011 while GDP rose

14 August 2012

The US Energy Information Administration (EIA) reported that after an increase in 2010 of 3.3%, energy-related carbon dioxide emissions in the US in 2011 decreased by 2.4% (136 million metric tons), while GDP grew by 1.8%. This indicates that the carbon intensity of the economy declined by about 4.2%.

Energy-related carbon dioxide emissions have declined in the United States in four out of the last six years. Emissions in 2011 were 526 million metric tons (9%) below the 2005 level.

The industrial sector experienced energy consumption growth of 0.7% in 2011. The commercial sector fell slightly (0.3%). Energy consumption in the residential sector fell by 1.1% and in the transportation sector by 1.4%. The sum of these sector changes meant that total energy consumption fell by 0.5 percent—this coupled with economic growth of 1.8% meant that the energy intensity of the economy fell by 2.3%.

Factors influencing the decrease included:

  • In 2011, transportation-related carbon dioxide emissions fell primarily due to higher fuel costs, improvements in fuel efficiency, and a reduction in miles traveled.

    In 2010, the price of regular gasoline averaged $2.78 per gallon. In 2011, the average price rose to $3.53 per gallon—an increase of 27%. It is estimated that the miles per gallon (mpg) of light duty vehicles improved by 1.0% (20.4 to 20.6 mpg) from 2010 to 2011. Vehicle miles traveled fell from an average of 8,127 million miles per day in 2010 to 8,029 million miles per day in 2011 (1.2 percent).

    This contributed to a decline in gasoline consumption of 2.9% which, in conjunction with changes in other transportation fuels, resulted in a decline in total energy consumption in the transportation sector of 1.4%.

  • In 2011, cooling degree-days (CDD) were slightly higher than in 2010 (0.7%). This would tend to put upward pressure on electricity demand and related emissions. On the other hand, heating degree-days (HDD) fell by 3.2% and residential sector energy consumption declined by 1.1%.

  • A carbon intensity decline in the electric power sector (-4.0%) which accounted for 40% of total U.S. primary energy use in 2011, helped achieve the lower carbon intensity of the energy supply. Because primary energy use in the electric power sector is allocated to the end-use sectors based on their share of electricity use, the drop in reported carbon intensity for the end-use sectors was greatest in the residential and commercial sectors (3.1% and 3.2%, respectively) as these sectors rely heavily on electricity to meet their energy needs.

  • Since 1949, the 2011 decline in coal generation of more 6% is second only to the decline in 2009 of almost 12%. As recently as 2005, coal’s share of electric power sector generation was more than 51%. By 2011 that share had declined to just over 43%. Petroleum generation, which was small to begin with, has also lost share. Natural gas, on the other hand, has steadily grown in market share. The introduction of new, efficient gas-fired capacity and a recent decline in the price of natural gas has helped boost natural gas’ share from 14% in 2000 to 24% in 2011.

August 14, 2012 in Brief | Permalink | Comments (3) | TrackBack (0)

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Comments

This can't be true. This is contrary to everything we have ever been taught. It is clear that the most affluent countries are those with the largest energy use. How can we grow our economy while using less energy, it's an impossibility. Sure, it's probably higher efficiency, but consumption on oil, coal and gas are down, and that has to be bad for our economy, or maybe not. Maybe, just maybe, when we don't spend so much on oil, coal and gas, we have money to spend on other things that also add to the GDP! Oh my!! Wouldn't that be a crazy thing! Less consumption is good when it's energy. No, that can't be right. Sorry, went off on a tangent there. So anyway, ignore that last bit, and just keep burning your fossil fuels, you know it's good for you and they will never run out, just like you've been schooled.

B$....don't forget that buying Chinese goods at Walmart (etc) is counted in the GDP. Moving manufacturing from USA to China is another way to lower local GHG, fuel consumption etc. Buying Chinese goods with borrowed money from China is another way to boost GDP without producing anything.

In other words, you could close all USA's factories, have 50% unemployed, borrow and distribute enough money to buy more and more imported goods, and your GDP will keep going up.

Brotherkenny4,

The article states something different."The industrial sector experienced energy consumption growth of 0.7% in 2011." . So while industry growing carbon intensity is reduced due to better MPG, lesser miles traveled and mainly due to shift from coal to the NG in power generation. Lets hope more wind power in near future since gas power is very flexible.

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