Modeling Greenhouse Gas Emissions for U.S. Economic Sectors

In the face of demand for significant decarbonization, organizations and businesses alike require the most up-to-date data to assess the life cycle impacts of their goods and services. Furthermore, federal agencies such as the General Services Administration seek to streamline the assessment of Scope 3 emissions for federal procurement. EPA tasked ERG with conducting the rapid modeling needed to update the national emissions estimates.

Leveraging our longstanding expertise of EPA’s Flow Sector Attribution modeling tool (FLOWSA), ERG staff generated an updated accounting of national emissions for over 500 U.S. economic sectors. These data, first published in 2023, and further revised with new data in 2024, provide the latest estimates for use in a key tool businesses and institutions use to perform emissions accounting.