Mandatory Greenhouse Gas Emissions Reporting
This page updated December 22, 2016
Information on California’s Mandatory Greenhouse Gas Reporting program.
EPE - February 1 Registration Workbook for Specified Source Facilities. By February 1, 2017, Electric Power Entities (EPE) must use the updated workbook to register their anticipated specified sources of electricity that will be reported for data year 2016. (12/22/2016)
EPE - Asset Controlling Supplier (ACS) System Emission Factors for Calendar Year 2017. The ACS emissions factors are now available. (12/13/2016)
2015 GHG Emissions Data Available and Updates to Posted 2011–2014 Data. The 2015 GHG emissions data summary spreadsheet is now available. In addition, updated spreadsheets are posted for the 2011–2014 reported data. (11/4/2016)
Proposed Mandatory Reporting Regulation (MRR) and Staff Report Available. On September 22, 2016, the Air Resources Board conducted a public hearing to consider proposed amendments to MRR. The regulatory documents are available here. (Updated 9/30/2016)
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.