Facility greenhouse gas reports

Washington requires some facilities and transportation fuel suppliers to annually report their greenhouse gas emissions. Our program uses the same emission calculation methods as EPA's greenhouse gas reporting program. We use these reports to better understand the amount and sources of carbon pollution in Washington.

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Learn about the Climate Commitment Act

Greenhouse gas emissions data

Greenhouse gas 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 greenhouse gas 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.

Washington’s greenhouse gas reporting map shows all reporting facilities with a physical location. Transportation fuel suppliers have statewide emissions and are not on the map. View the map in full screen.

Total reported facility emissions by year and gas.
You can also view a version that does not include biogenic carbon dioxide.

Other graphs include:

Total reported facility emissions by sector.
Total emissions by facility sorted from largest to smallest.
This version includes biogenic carbon dioxide.
Total emissions by facility sorted from largest to smallest.
This version excludes biogenic carbon dioxide. This is often used as the list of largest GHG emitters in Washington.
Total emissions by transportation fuel supplier sorted from largest to smallest.
This version includes biogenic carbon dioxide.

Reporting your greenhouse gas emissions

The information below will help you report your facility's emissions for the required greenhouse gas (GHG) reporting program.

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

Upload your files to our Washington Electronic Database for Greenhouse Gas Emissions (WEDGE) through the Air Quality Application Portal. You need to enter through an existing Secure Access Washington (SAW) account or create a new account. When you successfully upload your files, you will be given an XML submittal ID. Make sure you record this number because you will need it for your report signature form.

For more information on how to use this portal watch this video.

Reporting deadlines
Reporting fees

Types of reporters	Reporting deadlines
Electric power entities	June 1 of the following year
All other reporters	March 31 of the following year

There is an annual reporting fee. The fee is based on our cost to administer the program and the number of businesses reporting that year. View the fee schedule for 2022 reporting.

Type of reporters	Fee for 2022 reports
Reporters required to, or voluntarily, report to Ecology	$1,851

Contact information

Lindsey Kennelly
Climate Commitment Act Implementation Group
GHGReporting@ecy.wa.gov

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