Q842. What factors influenced the trend in emissions for electronics manufacturing?
A842. Reported emissions from the Electronics Manufacturing sector decreased from 7 MMT CO2e in 2011 to 6.1 MMT CO2e in 2017, a decrease of 12.9 percent. Emissions decreased 25.7 percent from 2011 to 2013, due primarily to a large reduction in combustion emissions at one plant. Emissions have increased by 17.3 percent since 2013, due in part to a rule revision that changed the emission factors used by facilities to estimate emissions, resulting in higher estimated emissions. The increasing complexity of semiconductor products (necessitating an increase in the use of fluorinated GHGs in the manufacturing process) may have also contributed to this increase.