Mandatory Greenhouse Gas Emissions Reporting

Background.    Reporting of greenhouse gases by major sources is required by the California Global Warming Solutions Act.  The Air Resources Board approved a mandatory reporting regulation in December 2007, which became effective January 2009.

GHG Reporting - What's New

Revisions to the Regulation for Mandatory Reporting of GHG Emissions
The proposed revised regulation and staff report are available now, including supporting documentation.  ARB staff is proposing revisions to the California GHG reporting regulation to support a greenhouse gas cap-and-trade program and to harmonize with the U.S. EPA greenhouse gas reporting requirements.  The revisions will be considered by the Board on December 16, 2010.  Details about the meeting and for submitting comments are available at the regulatory website for this item.

WCI Default Emission Factor Calculators have been posted on the Western Climate Initiative website, in support of the revisions to the regulation for mandatory reporting of GHG emissions for electric power entities.

Greenhouse Gas Reporting Advisory 10-01
Two-Month Verification Grace Period for Operators Subject to October 1, 2010 Verification Deadline

Reporting Frequently Asked Questions - Includes questions asked during the first year of GHG reporting, and answers by ARB staff.  Additional questions may be submitted to ghgreport@arb.ca.gov.

Reported Emissions and other data reported for 2008 under the mandatory GHG reporting program are available.

Verification Fact Sheet - Information for reporters about hiring a verifier, conflict of interest, and the verification process.
Finding a Verifier.   A list of accredited verifiers is now available. Reporters must contract with an ARB-accredited verification body in 2010 for verification of their 2009 emissions reports.  Remember that verifiers cannot act as consultants as you prepare your emissions report, but must provide an independent review after your report is certified and submitted.  A Verification Fact Sheet is available to assist with the verification process.

Regulation Revision Workshop - March 23, 2010
Agenda and Workshop Notice.  Presentations:  Purpose, General Provisions, Verification;  Combustion and Industrial Sectors (Cement, Refineries, Hydrogen, Oil & Gas, Electricity Generation, Cogen);  Electricity Deliverers (Retail Providers & Marketers);  Fuel Suppliers

Workshop to discuss GHG Reporting Regulation revisions being considered to align California greenhouse gas reporting requirements with the federal greenhouse gas reporting requirements adopted by the U.S. Environmental Protection Agency (U.S. EPA), and to support a proposed California greenhouse gas Cap-and-Trade Program.  Revisions would apply to 2012 greenhouse gas reporting.

Reporting Workshop - October 12, 2010.   Depending on the specific industrial sector, 2011 emissions reports from facilities were due on either April 1, 2011 or June 1, 2011.  Reports from power retail providers and marketers were due June 1, 2011.  Below are training materials from a 1/27/2010 webinar on GHG emissions reporting and verification.
Notice | Agenda | Presentations: Reporting (color) (b&w 4/page) and Verification (color) (b&w 4/page) | Webinar Recording (Reporting  Low / High Resolution | Verification Low / High Resolution )

GHG Reporting Tool Training Videos.   Video recordings of how to use the GHG reporting tool for each reporting sector are available. Reporting Help.   Reporters subject to mandatory GHG emissions reporting provide their data using the ARB's online Reporting Tool. See the Reporting Tool step-by-step guides and regulation Instructional Guidance documents for help with GHG emissions reporting. Contact us with questions about reporting or using the tool. For reference, the final regulation text and Final Statement of Reasons (FSOR) are available on ARB's regulatory website.
Report Certification and Verification Slides and Video.   During September 2009, ARB staff conducted a webinar on certification and verification of GHG emissions reports under the Mandatory Reporting Program. The slides and recording of the webinar are available at the following links. Agenda  Slides (1/page)  Slides (6/page)  Webinar Recording (certification) and (verification)