Mandatory Greenhouse Gas Emissions Reporting
This page updated March 30, 2015
Information on California’s Mandatory Greenhouse Gas Reporting program.
Updated Guidance Documents. ARB staff has posted a series of updated guidance documents for general topics, emissions data reporting, product data reporting, and Cost of Implementation (COI) Reporting and Verification FAQs.
2014 GHG Mandatory Reporting Regulation Effective January 1, 2015. The revisions to the Mandatory Reporting rule are approved. The Final Regulation Order and other rulemaking documents are available on the rulemaking webpage.
Asset Controlling Supplier Emission Factors. ARB has posted the emission factors for approved asset-controlling suppliers for 2015 data reported in 2016. These emission factors must be used to report specified source electricity from ACS systems under MRR.
2013 Annual GHG Emissions Data Summary. This document includes individual facility and entity reported emissions, covered emissions, and other verification related information.
Reporting of greenhouse gases by major sources is required by the California Global Warming Solutions Act (AB 32, 2006). The Mandatory Reporting Regulation is applicable to industrial facilities, fuel suppliers, and electricity importers. All GHG emissions data reports must comply with the regulatory requirements and be submitted via the Cal e-GGRT reporting system.
Regulatory Advisory (8/8/14): Verification Deadline Extension for certain Electric Power Entities
Power Entities (EPEs) - Updated Specified Source Emission Factors:
Certain specified source emission factors have been updated using U.S.
EPA greenhouse gas emissions data.
- Specified Source Emission Factor Revisions Summary
- Revised Emission Factors and Updates to Workbook 1
Regulatory Advisory (5/8/14): Refinery Reporting Deadline Extension for refineries subject to new product data reporting requirements.
Regulatory Advisory (5/9/14): COI Fee Reporting Deadline Extension for refineries subject to new product data reporting requirements.
Regulatory Advisory (4/4/14): Reporting Deadline Extension for operators subject to new product data reporting requirements.
Regulatory Advisory (4/8/14): COI Fees Reporting Deadline Extension for operators subject to new product data reporting requirements.