This dataset contains data reported to Ecology as of January 24, 2025. This dataset contains both reported and covered emissions. Some of these emissions have been third-party verified, if the emissions reports meet third-party verification requirements. The remaining reported emissions are preliminary and have not been fully verified by Ecology. This information is subject to change.

Certain large reporters are required to report their greenhouse gas emissions to Ecology beginning with the 2012 emissions year.

Reporters that emit at least 10,000 metric tons of carbon dioxide equivalent (CO2e) of greenhouse gases per year in Washington are required to report in accordance with WAC 173-441.

Covered emissions are calculated pursuant to WAC 173-446 for entities that are covered under the Climate Commitment Act’s (CCA) Cap-and-invest Program.

Some reporting entities and their previously reported emissions have been removed from the dataset as Ecology screening and third-party verification have shown their previous reports were incorrect, and that their updated reports demonstrate that they are below the reporting threshold, and that they are no longer in the reporting program.

This dataset does not include all of Washington’s emissions. See the Washington State Greenhouse Gas Emissions Inventory (Tracking greenhouse gases - Washington State Department of Ecology) for statewide emissions totals. Emissions are in units of metric tons of carbon dioxide equivalents using AR4 global warming potentials as specified in WAC 173-441.