Q839. What factors influenced the trend in emissions for pulp and paper?
A839. Reported emissions from the Pulp and Paper sector decreased significantly from 44 MMT CO2e in 2011 to 36 MMT CO2e in 2017, a decrease of 18 percent. Reported emissions declined steadily across the time series but the decrease was most notable from 2012 to 2013 (9.3 percent). Reported emissions decreased for both chemical pulp and paper manufacturers and other paper producers.
The pronounced decline in emissions from chemical pulp and paper facilities between 2012 and 2013 can mostly be attributed to a change in the emission factors used to estimate methane and nitrous oxide emissions. For reporting year 2013, EPA revised the emission factors that facilities use to calculate emissions from the combustion of spent pulping liquor and wood residuals. These new emission factors contributed significantly to the decline in reported emissions for reporting year 2013. The rest of the observed decline in reported emissions was due to changes in production levels and to changes in the fuel mix. The use of coal, coke, and petroleum products as fuel has decreased, and the use of natural gas has increased.