In the U.S. Energy Information Administration�s (EIA) Annual Energy Outlook 2020 (AEO2020) Reference case, which assumes no new laws and regulations, U.S. energy-related carbon dioxide (CO2) emissions decrease through the early 2030s before increasing to 4.9 billion metric tons in 2050. If realized, U.S. energy-related CO2 emissions in 2050 would be 4% lower than 2019 levels. Changes in the fuel mix for electricity generation and increasing activity in the industrial and transportation sectors are the main drivers of EIA�s U.S. energy-related CO2 emissions projections.