An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Greenhouse Gas Emissions

Natural Gas and Petroleum Systems in the GHG Inventory: Updates to the 1990-2011 Inventory (published 2013)

On September 13–14, 2012, EPA held a stakeholder workshop on key aspects of the estimates of greenhouse gas emissions from the natural gas sector in the GHG Inventory. View speaker presentations and learn more about the workshop.

On February 27, 2013, EPA held a technical webinar on natural gas systems in the GHGRP and the GHG Inventory. View speaker presentations and learn more about the webinar.

View updates to the 1990–2011 Greenhouse Gas Inventory (published April 2013), below.

View information about revisions to estimates for natural gas and petroleum systems in the GHG Inventory for other Inventory release years.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Overview of Updates to the Natural Gas Sector Emissions Calculations for the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2011 (PDF)(3 pp, 44 K)