Eco Watch : “Data from the U.S. Energy Information Administration released today show that U.S. energy-related carbon dioxide emissions rose 2.5 percent in 2013, from 5,267 million metric tons in 2012 to 5,396 million metric tons in 2013. This increase comes after two years of declining emissions.”  

EIA cites two major reasons emissions rose in 2013:

• Colder weather, which increased the demand for oil and natural gas to heat homes and drove an increase in residential sector emissions (nearly half of the total emissions increase in 2013).
• More coal-fired electricity generation. Higher natural gas prices in 2013 resulted in a small shift back from natural gas to coal-fired generation.