Data Summaries and Maps - FAQ

Data Summaries and Maps frequently asked questions.

• When will EPA release the 2023 Emissions data?
• How can I get more detailed information? What measurements/sensors are used to measure emissions?
• Where can I get maps and/or emissions of facility emissions data?

• What sources make up the Sectors or Tiers used in the emissions data summaries?

• Where can I find older NEI Data (prior to 2008)?

• When will EPA release the 2020 Emissions data?

• What Emissions data are available for 2018 and 2019?

• Can I get access to the Emissions Inventory System even if I am not a data submitter?

• Are GHGs complete in the NEI?

• Where can I download hourly emissions data from continuous monitoring?