Potential Gas Agency
We assess the potential supply of gas in the U.S.
Welcome to the website of the Potential Gas Committee (PGC)
We are the only existing group that assesses the future supply of natural gas in the U.S. Our first assessment was published in 1964 and we publish a new assessment every two years. More than 800 experienced volunteer geoscientists and engineers contributed to PGC assessments. The most recent assessment was produced by ~80 current PGC members. Our assessments inform decision-making and help build compelling cases for investment in natural gas.
Evaluating Gas Resources
We assess technically recoverable gas resources in conventional and unconventional (tight, shale, coalbed) reservoirs. We assess Probable, Possible and Speculative resources as shown on the diagram.
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Mapping Natural Gas in the U.S.
Our latest (year-end 2024) assessment suggests that the U.S. has 3,870 trillion cubic feet (Tcf) of technically recoverable natural gas resources. The map shows where the resources are located.
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The objective of the Potential Gas Committee is to provide assessments of the potential supply of natural gas resources based on expert knowledge. These Potential Gas Committee (PGA) resources, along with an independent determination of proved reserves from the Energy Information Agency (EIA), provide a meaningful appraisal of the nation’s long term natural gas supply.
The PGC’s assessments of the potential supply of natural gas in the United States stands at a grand total of 3,870 Trillion cubic feet (Tcf, mean value), a net increase of 518 Tcf (15%) from year-end 2022. When this value is combined with the U.S. Energy Information Administration’s (EIA) 2023 proved gas reserves estimate of 691 Tcf; the U.S. future supply of natural gas stands at 4,562 Tcf.
The Potential Gas Committee released its biennial resource assessment on September 22, 2025. The report is now available for purchase.
Download the Order Form below or click on the Publications link to learn more.
Contact Us
Dr. Eric Roberts
Professor, Director
eric.roberts@mines.edu
Potential Gas Committee
Colorado School of Mines
Golden, CO 80401
Join Us
Reservoirs engineers, geoscientists and managers are welcome to join PGC and contribute to the next (2026) PGC report.