According to the United States Energy Information Administration (EIA), domestic energy-related CO2 emissions rose by 2.8% in 2018. This is the largest increase in energy-related CO2 emissions since 2010. Domestic emissions from natural gas, which increased by nearly 10%, drove the overall growth in 2018, although emissions from oil, mainly used in the transport sector, account for the largest share of total energy-related CO2 emissions.
The US EIA also estimates that the total US energy consumption in 2018 is 0.4% below the record set in 2007. This figure is largely attributable to weather changes, as the temperature patterns led to record levels of electricity and natural gas consumption throughout the year: the US population-weighted cooling degree days (CDDs) reached a new record in 2018, while the recorded heating degree days (HDDs) were the highest since 2014.
Energy-related CO2 emissions are predicted to dwindle in both 2019 and 2020, due to milder weather in both winter (less HDDs) and summer (less CDDs). They would remain higher than in 2017.