ARB's Emission Inventory Activities

Last updated September 8, 2015


An emission inventory is an estimation of the amount of pollutants discharged into the atmosphere that can be broken down by specified source categories in a certain geographical area and within a specified time span (e.g., in a calendar year). This webpage provides links to ARB's various emission inventory programs.

Greenhouse Gases

Annual Statewide Greenhouse Gas (GHG) Emission Inventory Program

Mandatory Reporting Program

GHG Facility and Entity Emissions Data includes annual emissions reported by facilities and entities subject to the GHG Mandatory Reporting Regulation

Criteria Air Pollutants

Particulate Matter, Carbon Monoxide, Nitrogen Oxide, Sulfur Dioxide, Lead, and Reactive Organic Gases

Emissions Data

Mobile Source Emission Inventory

Emissions Estimation Methods and Resources

Toxic Air Pollutants

District Resources