|data from EIA|
The EIA data shows that for the first half of 2014 carbon dioxide (CO2) released into the atmosphere in the United States increased by 2.7% over last year continuing the upward trend in CO2 emissions which were at their lowest in 2012. As can be seen in the graph above and chart below, there has been a general downward trend in CO2 emissions since 2007 in all sectors of the economy. (Please note that both the residential sector and industrial sector include part of the electrical generation emissions so that the parts add up to more CO2 than the total emission from the economy. The chart includes the commercial sector and removes the mixed sector electrical category.) Though overall emissions of CO2 in the United States have fallen 10.4% since 2007 and that is generally true in all sectors of the economy; the largest share of reduction in CO2 emissions was from reduction in emissions from electrical generation which have fallen 15% over the period. Over the same period, CO2 emissions from burning coal in manufacturing, transportation, and industry are down 21%. However, CO2 emissions from burning coal are up 3.25% in the first 6 months of this year and emissions from burning natural gas are up 4.9%. The increase in natural gas appears to be divided fairly evenly among the commercial, industrial and residential sectors.
|data from EIA|
Electricity generation accounts for approximately 38% of the CO2 emission in 2013 down from 40% in 2007. In 1990 electricity generation accounted for only 36% of the total U.S CO2 emissions. In 2013 the industrial sector accounted for 28% of all CO2 emissions, but back in 1990 industry accounted for 34% of total CO2 emissions. Back in the days when I was a plant engineer, the industrial sector accounted for 40% of all CO2 emissions. Over this period the industrial output has not shrunk, but the labor and energy inputs to industry have shrunk and production has surged and fallen with recessions as can be seen in the chart from the Federal Reserve.
|US industrial production from the Federal Reserve|