California Air Resources Board

2024 GHG Emissions Data

Under California’s Regulation for the Mandatory Reporting of Greenhouse Gas Emissions (MRR), industrial sources, fuel suppliers, and electricity importers must report their annual GHG emissions to the California Air Resources Board (CARB). For reporters subject to the California Cap-and-Trade Program, submitted data are verified by a CARB-accredited independent third-party verifier.

The link below provides a summary spreadsheet of 2024 GHG emissions data reported under MRR for individual reporting facilities, electric power entities, and fuel suppliers. Prior years' annual data are listed under the Historical Emissions Data section below.

• 2024 GHG Facility and Entity Emissions (will be posted November 4, 2025)
• Mandatory GHG Reporting 2024 Emissions Year FAQs (will be posted on or after November 4, 2025)

For questions on the 2024 data, contact Syd Partridge at (916) 750‑0361.

Integrated Emissions Visualization Tool

• CARB Pollution Mapping Tool - An interactive map that allows users to locate and view emissions of greenhouse gases (GHG) and criteria pollutants from large facilities in California by location, name, or industrial sector. The 2023 MRR GHG data will be added to the visualization tool in 2025.

2008 to 2023 Historical Emissions Data

GHG emissions data reported between 2008 and 2010 were subject to slightly different applicability, calculation, methodology, and verification requirements.

Beginning with GHG emissions data reported in 2011, new reporting sectors were included. In addition, CARB included collection of additional data to support the Cap-and-Trade Program and required annual third-party verification for GHG emissions data. When comparing data reported for years 2011 and onward with historical 2008-2010 data, there will be differences in the facilities listed, as well as the emissions and other data due to changes in methods and applicability.

• 2023 GHG Facility and Entity Emissions (Updated 7/4/2025)
• Mandatory GHG Reporting 2023 Emissions Year FAQs (11/15/2024)

• 2022 GHG Facility and Entity Emissions  (Updated 11/15/2024)
• Mandatory GHG Reporting 2022 Emissions Year FAQs (11/6/2023)

• 2021 GHG Facility and Entity Emissions  (Updated 11/6/2023)
• Mandatory GHG Reporting 2021 Emissions Year FAQs (11/4/2022)

• 2020 GHG Facility and Entity Emissions  (Updated 11/15/2024)
• Mandatory GHG Reporting 2020 Emissions Year FAQs (11/4/2021)

• 2019 GHG Facility and Entity Emissions  (Updated 11/6/2023)
• Mandatory GHG Reporting 2019 Emissions Year FAQs (11/4/2020)

• 2018 GHG Facility and Entity Emissions  (Updated 11/4/2022)
• Mandatory GHG Reporting 2018 Emissions Year FAQs (11/8/2019)

• 2017 GHG Facility and Entity Emissions  (Updated 11/4/2022)
• Mandatory GHG Reporting 2017 Emissions Year FAQs (11/21/2018)

• 2016 GHG Facility and Entity Emissions (Updated 11/4/2022)
• 2016 MRR FAQs (11/6/2017)

• 2015 GHG Facility and Entity Emissions (Updated 11/4/2019)

• 2014 GHG Facility and Entity Emissions (Updated 11/4/2019)

• 2013 GHG Facility and Entity Emissions (Updated 11/4/2019)
• 2008-2013 GHG Emission Data Summary (6/30/2015)

• 2012 GHG Facility and Entity Emissions (Updated 11/4/2019)
• 2008-2012 Emission Summary (11/4/2013)

• 2011 GHG Facility and Entity Emissions (Updated 11/5/2018)
• 2011 GHG Reporting and Verification Summary (1/11/2013)

2008 to 2010 Data Reported by Facilities and Electric Power Entities

• Emissions Reported by Facilities
  • 2010 Emissions Summary (6/30/2015)
  • 2009 Emissions Summary (3/12/2012)
  • 2008 Emissions Summary (3/12/2012)


• Data Reported by Electricity Retail Providers and Marketers
  • 2010 Transactions Summary (3/13/2012)
  • 2009 Transactions Summary (3/13/2012)
  • 2008 Transactions Summary (3/13/2012)

For general questions regarding Mandatory Greenhouse Gas Emissions Reporting, contact the GHG Reporting Help Desk.