Mandatory GHG Reporting - Reported Emissions

This page updated April 6, 2012

Under California’s mandatory Greenhouse Gas Reporting Program, California's largest industrial facilities reported their greenhouse gas (GHG) emissions for years 2008, 2009 and 2010. Facility operators certified their 2008 emissions data reports were complete and accurate. 2009 emissions data reports were certified by operators and also verified by third-party verifiers accredited by the Air Resources Board. 2010 emissions reports have been certified and are in the process of being verified. Electricity retail providers and marketers also reported electricity transaction data for 2008, 2009 and 2010. 2009 transaction reports were verified by third party verifiers, 2010 reports are in the process of being verified. The summaries of reported GHG emissions and electricity transaction data are available below. A link to individual detailed emission data reports are available through the Reporting Tool.

• Emissions Reported by Facilities
  • 2010 Emissions Summary [Excel file]
  • 2009 Emissions Summary [Excel file]
  • 2008 Emissions Summary [Excel file]
• Data Reported by Electricity Retail Providers and Marketers
  • 2010 Transactions Summary [Excel file]
  • 2009 Transactions Summary [Excel file]
  • 2008 Transactions Summary [Excel file]
• Detailed Facility, Retail Provider, or Marketer Reports
  • Generate Public Reports individually using the GHG Reporting Tool

Overview

The GHG emissions reported by facilities through the Mandatory Reporting Program represent approximately 40 percent of California's statewide greenhouse gas emissions (pie chart). Facility emissions for criteria and toxic air pollutants are reported through different programs and available on the ARB website

The 2010, 2009 and 2008 GHG emissions reports include data from the following industrial sectors: cement plants, oil refineries, hydrogen plants, electricity generating facilities, cogeneration facilities, other large stationary combustion sources, and electricity retail providers and marketers. Only sources that meet specified emission thresholds are subject to reporting. Oil refineries, hydrogen plants, and large stationary combustion facilities emitting ≥ 25,000 metric tons (MT) of CO₂ per year are subject to reporting. The threshold for electricity generating and cogeneration facilities is ≥1megawatt generating capacity and ≥2,500 MT CO₂ per year.

Starting with 2009 emissions reported in 2010, all emission data reports are required to be reviewed and verified by ARB-accredited third-party verifiers. ARB conducts a Verification Program to train and accredit verifiers and verification bodies. ARB also conducts oversight and audit of its verifiers to ensure verification services are conducted consistently and in conformance with the requirements of the GHG reporting regulation.

The Facility Emissions summary spreadsheets list facility name, ARB identification number, reported CO₂ equivalent emissions (with biomass CO₂ shown separately), report verification or submission status, facility location, primary and secondary reporting sectors, and NAICS code. Individually tool-generated Detailed Facility Emissions reports include emissions subdivided into stationary combustion, process, fugitive, and flaring emissions categories. (Click on “Generate Public Reports,” then select Facility Emissions Public Report to get started.)

The Electricity Retail Providers and Marketers summary spreadsheets lists the reporting entity name, ARB identification number, entity type, mailing address, reported SF6 emissions in metric tonnes CO₂ equivalent, and power transaction report status. The individual tool-generated Detailed Retail Provider or Marketer reports include sulfur hexafluoride (SF6) emissions and aggregated electricity transactions data . The detailed reports also include the reporting status and associated verification body, if any. (Click on “Generate Public Reports,” then select Facility Emissions Public Report to get started.)