Consumption-Based GHG Emissions Inventory

Learn about the Air District’s Consumption-Based Greenhouse Gas Emissions Inventory.

Expediting Permits to Support COVID-19 Efforts

The Air District supports businesses and organizations that are changing or repurposing operations to aid in the response to COVID-19.

In order to provide support for public health and safety efforts, the Air District will prioritize and expedite the permitting process for these businesses and organizations.

Processing and issuance of permits are considered essential functions during the COVID-19 response as part of the Air District’s efforts to improve air quality and protect public health and safety. Those looking for assistance in filing applications for their new or modified equipment in response to COVID-19 can email for additional instructions. Please include “COVID-19 Permit” in the subject line and include the following information:

  • Facility name, facility ID (if available), and facility address
  • Contact name and phone number
  • Project description, including how the project is critical to the COVID-19 response
  • Equipment and process descriptions
  • Flow diagram and process rates
  • Operating schedules
  • Air pollution control equipment
  • Stack/exhaust emissions data

For those projects deemed to be critical to the COVID-19 response, the Air District will facilitate the preparation of permit application forms and will work with the applicant to complete the data and calculate the fees required. The Air District will process these applications on a high-priority and expedited basis.

Additional information can be found on the Air District’s website and by contacting the Air District’s Permit Ombudsman at (preferred) or by leaving a voicemail at (415) 749-4721.

The Air District collaborated with the Cool Climate Network at UC Berkeley to develop a consumption-based inventory of greenhouse gas emissions for the San Francisco Bay Area, based on the six greenhouse gases identified in the Kyoto Protocol: CO2, methane, N2O, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. The consumption-based inventory estimates the amount of greenhouse gases emitted in the production of goods and services from all over the world that are consumed by Bay Area residents. 

The consumption-based inventory is intended to supplement and complement the Air District’s production-based inventory of greenhouse gases that are emitted within the geographic boundaries of the Air District.

The consumption-based inventory is based on a full life-cycle analysis of the emissions generated by the production, shipping, use, and disposal of each product consumed in the Bay Area, regardless of where the GHG emissions were released to the atmosphere. The inventory estimates emissions for several hundred categories of products within the five basic areas of transportation, housing, food, goods, and services.

Because our modern economy is highly integrated and global in scale, a significant portion of the goods and services consumed by Bay Area residents are produced in other states or nations. A consumption-based inventory is especially relevant for the purpose of analyzing the GHG footprint of people in affluent regions, such as the San Francisco Bay Area, where the high level of income enjoyed by many households leads to increased consumption of goods and services, as well as more spending on leisure activities such as vacation travel.

In combination, the Air District’s traditional GHG inventory and the consumption-based inventory provide a more complete analysis of how the region contributes to global climate change.

The consumption-based emissions inventory will be used to:

  • help inform development of the Air District’s Regional Climate Protection Strategy
  • identify potential GHG emission reduction policies or measures
  • assist climate planning efforts by cities and counties in the Bay Area
  • help educate Bay Area residents about the size and composition of their GHG footprint and how they can take action to reduce their GHG emissions

Additional information

Summary of CBEI Methodology & Key Findings

PowerPoint presentation to Climate Protection Committee on November 19, 2015

Final Report from UC Berkeley Cool Climate Network

UC Berkeley Cool Climate website for emissions for each city and county

Spare the Air Status

Last Updated: 1/6/2016