Mandatory greenhouse gas reports

Washington requires some facilities, electric power entities (EPEs), and fuel suppliers to annually report their greenhouse gas emissions. We use these reports to better understand the amount and sources of carbon pollution in Washington and to support the cap-and-invest program established by the Climate Commitment Act (CCA).

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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. Data from 2012–2021 will not include emissions from reporters that were required to report for the first time in 2023 for reporting year 2022, such as fuel suppliers other than natural gas and EPEs.

You can also view the reports using the interactive map and graphs below.

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 for emissions more consistent with those other programs.

Washington’s greenhouse gas reporting map shows all reporting facilities with a physical location.

View the map in full screen.

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

Other graphs include:

Total reported emissions by sector.
Total emissions by reporter, sorted from largest to smallest, including biogenic carbon dioxide.
Total emissions by reporter, sorted from largest to smallest, excluding biogenic carbon dioxide. This list is often used as the list of largest GHG emitters in Washington.

Reporting your greenhouse gas emissions

The information below will help you report your 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. Sector-specific reporting tools for fuel suppliers and electric power entities are available by email.

Who is required to report in Washington?

Facilities that emit at least 10,000 metric tons of carbon dioxide equivalent (MT CO2e) per year of total GHG emissions in Washington.
Fuel suppliers that produce, import, or deliver products equivalent to 10,000 MT CO2e of total GHG emissions per year in Washington.
Electric power entities (EPEs) that import or deliver electricity equivalent to 10,000 MT CO2e or more per year of total GHG emissions in Washington.

Steps to register your facility and report your greenhouse gases

Emissions reporting trainings are ongoing. Recordings and slides are available for the following trainings held in 2022:

Fuel Supplier Tool (for suppliers of fuels other than natural gas)
GHG Registration (GHGReg) Platform Training (recommended for all reporters)
- This training covers how to register for and submit reports in the updated GHGReg platform. All new and existing reporters must register for this updated platform to submit emissions reports as required under Chapter 173-441 WAC.

To request access to any of these recorded trainings or a copy of the relevant reporting tools, please reach out to the help desk at GHGreporting@ecy.wa.gov.

We are working to schedule emissions reporting trainings for electric power entities, facilities, and third-party verification experts. Information on how to register for these trainings will be posted once available.

Access the GHG Registration (GHGReg) platform through the Air Quality Application Portal. You need to enter through an existing Secure Access Washington (SAW) account or create a new account.
Existing reporters: Choose your reporter from the list and request a role (Designated Representative, Alternate Designated Representative, or Agent as outlined in WAC 173-441-060).
New reporters: Request to have your reporter added to the list. Once the reporter has been added, you can request a role.
The deadline for registering is 60 days before your GHG reports are due.

Fuel suppliers and EPEs: Use the Excel reporting tools provided by Ecology to calculate and submit your emissions. Use the links below to request the tools:
- Request the Natural Gas Supplier Reporting Tool
- Request the Other Fuel Supplier Reporting Tool
- Request the Facility Reporting Tool (in development)
- Request the EPE Reporting Tool (in development)
Facilities: Enter your emissions using the EPA's Electronic Greenhouse Gas Reporting Tool (e-GGRT):
- Follow the EPA’s instructions for entering your report.
- For more help visit the EPA's training website.
- Download your full XML report (not the public report).
- If you use the Inputs Verifier Tool (IVT), you must also download and submit this file when reporting to Ecology.
- Use the Excel reporting tool provided by Ecology to report additional information required by WAC 173-441.

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, PE
Climate Commitment Act Implementation Group
Lindsey.Kennelly@ecy.wa.gov
GHGReporting@ecy.wa.gov
360-584-7426

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