Washington requires some facilities and transportation fuel suppliers to annually report their greenhouse gas emissions. Our program uses the same emission calculation methods as the U.S. Environmental Protection Agency's (EPA) greenhouse gas reporting program. We use these reports to better understand the amount and sources of carbon pollution in Washington.
Greenhouse gas emissions data
GHG reporting data can be viewed, filtered, and downloaded on our data.wa.gov site. This table contains information from all reports for each year since reporting began in 2012. You can also view the reports using the following tools.
This dataset does not include all of Washington’s emissions. See the Washington State Greenhouse Gas Emissions Inventory for statewide emissions totals. The inventory and other official GHG emissions totals often do not include biogenic carbon dioxide emissions. Subtract biogenic carbon dioxide emissions from total emissions or use the provided alternate graphs below if you want numbers more consistent with those other programs.
Reporting your greenhouse gas emissions
The information below will help you report your facility's emissions for the required greenhouse gas (GHG) reporting program. If you're a transportation fuel supplier, you have special reporting instructions that you can view on our transportation fuel supplier greenhouse gas reporting page.
Some facilities that are required to report their emissions to us are also required to report to the EPA. Please visit their website for more information about the EPA greenhouse gas reporting program.
Who is required to report in Washington?
- Facilities that emit at least 10,000 metric tons of carbon dioxide equivalent (CO2e) per year in Washington.
- Suppliers of liquid motor vehicle fuel, special fuel, or aircraft fuel that provide products equivalent to at least 10,000 metric tons of carbon dioxide per year in Washington.
Steps to register your facility and report your greenhouse gases