Carbon Dioxide Emissions from Transportation Exceeded those from the Electric Power Sector for the First Time in 38 Years
October 24, 2016
Beginning in 1978, carbon dioxide (CO2) emissions from the electric power sector remained higher than the CO2 emissions produced in the transportation sector (based on 12-month running totals) until February 2016 when transportation was responsible for more emissions. There are several factors that have led to this change. On the transportation side, the recent rise in vehicle miles of travel has led to an increase in fuel consumption and subsequent rise in CO2 emissions. Within the electric power sector, there was a decrease in CO2 emissions from a high of 2,434 million metric tons (MMT) in 2008 to 1,810 MMT in May of 2016, about a 25% reduction. The decline in CO2 emissions in the electric power sector is largely attributable to the decreasing use of coal for power generation.
Carbon Dioxide Emissions by Sector, 12-month Running Totals, December 1973 – May 2016

Notes
- Although the data labels are annual, the data graphed are monthly data, ending with May 2016.
- To avoid double-counting, the "Industrial Share of Electric Power Sector CO2 Emissions" were subtracted from the Industrial Total, the “Residential Share of Electric Power Sector CO2 Emissions” were subtracted from the Residential Total, and so on for Commercial and Transportation sectors.
Source
Energy Information Administration, August 2016 Monthly Energy Review, Tables 12.2, 12.3, 12.4, 12.5, and 12.6.