U.S. Energy-Related Carbon Dioxide Emissions, 2014

• Energy-related carbon dioxide (CO2) emissions increased by 50 million metric tons (MMmt), from 5,355 MMmt in 2013 to 5,406 MMmt in 2014.
• The increase in 2014 was influenced by the following factors:
  • Real gross domestic product (GDP) grew by 2.4%;
  • The carbon intensity of the energy supply (CO2/Btu) declined by 0.3%; and
  • Energy intensity (British thermal units[Btu]/GDP) declined by 1.2%.
• Therefore, with GDP growth of 2.4% and the overall carbon intensity of the economy (CO2/GDP) declining by about 1.5%, energy-related CO2 grew 0.9%.