DEP is required by the Pennsylvania Climate Change Act to compile an annual inventory of GHGs emitted in Pennsylvania. The inventory must establish GHG emission trends and contributions of major sectors, including, but not limited to the transportation, electricity generation, industrial, commercial, mineral and natural resources, production of alternative fuel, agricultural, and domestic sectors.
In 2021, (the most recent data available for the 2024 Inventory) Pennsylvania was responsible for approximately 258 million metric tons of carbon dioxide equivalent (MMTCO2e) being emitted into the atmosphere. Production and consumption of energy accounted for nearly 90 percent of these emissions. Pennsylvania’s forestry and land use sector sequestered over 23 MMTCO2e in 2021.
The current inventory can be found here: