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Gas flares at a Texas oil production and storage facility. Credit: Shutterstock \/ G B Hart<\/p>\nGas flares at a Texas oil production and storage facility. Credit: Shutterstock \/ G B Hart<\/p>\n
This article originally appeared on Inside Climate News<\/a>, a nonprofit, non-partisan news organization that covers climate, energy and the environment. Sign up for their newsletter here<\/a>.<\/p>\n U.S. Sen. Sheldon Whitehouse, D-Rhode Island, launched an investigation into the discrepancy between reported and observed methane pollution from the Permian Basin\u2014the largest-producing oil field in the United States and one of the largest in the world.\u00a0<\/p>\n The investigation, announced Wednesday, follows a recent report by MethaneSAT, a short-lived methane-sensing satellite launched by the Environmental Defense Fund, Harvard University and others in 2024<\/a>. That report, released in early February, found that methane emissions from oil and gas production facilities in the Permian Basin from May 2024 to June 2025 were four times higher<\/a> than the U.S. Environmental Protection Agency\u2019s official estimates.<\/p>\n \u201cThe inconsistency between emissions reported to EPA\u2019s Greenhouse [Gas] Inventory and satellite data suggest that significant, previously unreported emissions may be occurring,\u201d Whitehouse, the ranking member of the Senate Environment and Public Works Committee, said in a written statement. As a result, \u201csubstantial opportunities exist to reduce waste, improve operational efficiency, and mitigate climate change.\u201d<\/p>\n Methane is a climate super-pollutant. Over 80 times more effective at warming the planet than carbon dioxide in the first two decades after its release, it is the second-leading driver of climate change. Its emissions also pose serious public health risks, contribute to smog formation and negatively impact agricultural production.\u00a0<\/p>\n Whitehouse requested information by April 1 from eight leading oil and gas producers in the Permian Basin of West Texas and southeastern New Mexico\u2014EOG Resources, ConocoPhillips, Occidental Petroleum, ExxonMobil, Diamondback Energy, Devon Energy, Chevron and Mewbourne Oil Company. The senator asked each company about the steps they are taking to address methane pollution in the region, how they monitor and measure their own emissions and their current estimates.\u00a0<\/p>\n \u201cWe appreciate the Senator\u2019s interest in this important topic and look forward to working with him to achieve our shared goal of increasing global supplies of natural gas and reducing cost for consumers and industry,\u201d Allison Cook, a spokesperson for Chevron, said in an email.<\/p>\n A spokesperson for EOG Resources shared the company\u2019s 2024 sustainability report<\/a>, which noted a low rate of methane emissions, 0.04 percent of total U.S. gas production.\u00a0<\/p>\n None of the other companies responded to a request for comment from Inside Climate News.<\/p>\n A spokesperson for S&P Global Energy, a research firm that focuses on energy, commodities and financial information, said the discrepancy relates to how the EPA requires emissions data to be reported. An S&P Global report published last year concluded methane emissions from the Permian Basin declined by nearly 20 percent<\/a> from 2022 to 2024 as oil and gas production grew.<\/p>\n Sharon Wilson, executive director of the nonprofit organization Oilfield Witness, which uses optical gas imaging cameras to reveal emissions of methane and other pollutants in the Permian Basin and elsewhere, cautioned that the S&P Global report had not undergone the peer-review process customary for studies published in academic journals.<\/p>\n MethaneSAT\u2019s findings hadn\u2019t been confirmed through a peer-reviewed study published in an academic journal at the time of their release in February. However, a MethaneSAT study that includes data from the Permian is currently under review by the journal EGUsphere<\/a>.<\/p>\n Steven Hamburg, chief scientist at the Environmental Defense Fund and MethaneSAT project lead, said emissions from the region are \u201cvery large\u201d and the intensity, or rate of emissions, exceeds industry targets for emission reductions.<\/p>\n \u201cBottom line emissions are far too high, and it is technically and economically feasible to reduce emissions drastically,\u201d Hamburg said in a written statement.\u00a0\u00a0<\/p>\n Two of the companies questioned by Whitehouse, ExxonMobil and Occidental Petroleum, have pledged to reduce methane emissions to 0.2 percent of total gas brought to market by 2030 under the Oil and Gas Decarbonization Charter, a voluntary industry group. MethaneSAT reported a significantly higher rate of emissions\u20142.4 percent of total marketed gas\u2014for the entire Permian Basin.<\/p>\n A spokesperson for the Oil and Gas Decarbonization Charter did not respond to a request for additional information other than providing a link to the group\u2019s 2025 annual report<\/a>.\u00a0\u00a0<\/p>\n All of the companies except Mewbourne Oil are members of the Oil and Gas Methane Partnership 2.0, a global emissions-reduction program for oil and gas companies overseen by the United Nations Environment Programme (UNEP). Member companies commit to an individual methane reduction target, based either on absolute emissions volume or methane intensity.<\/p>\n A UNEP spokesperson said they support measurement data provided by efforts such as MethaneSAT. \u201cThe transparency provided by this data is essential for industry to effectively manage emissions and for consumers, investors and others to make informed decisions,\u201d the spokesperson said in an email.\u00a0\u00a0<\/p>\n In a press release announcing the investigation, Whitehouse stated that reducing methane emissions \u201ccan largely be done at no net cost.\u201d Methane is the primary component of natural gas, a valuable commodity whose price has spiked due to the ongoing U.S.-Israel war in Iran.<\/p>\n Wilson challenged the notion of reducing emissions at little to no cost, noting that methane is considered a byproduct in the Permian Basin and that a significant buildout of additional infrastructure, along with increased equipment maintenance, would be needed. Oil is the primary commodity in the region. Pipelines needed to bring gas to market are often insufficient, resulting in a large volume of gas being flared rather than sold<\/a>.<\/p>\n \u200b\u200bWilson emphasized that producing oil and gas inevitably releases pollution, and permitting new sites will lead to elevated levels.<\/p>\n Whitehouse said stronger federal oversight is needed.<\/p>\n \u201cFossil fuel companies can\u2019t be trusted to control their dangerous methane leakage,\u201d he said. \u201cThere\u2019s a significant discrepancy between reported and tracked methane emissions in the Permian Basin that demands further investigation.\u201d<\/p>\n Sign Up for SA Current newsletters.<\/a><\/p>\n Follow us:\u00a0Apple News<\/a>\u00a0|\u00a0Google News<\/a>\u00a0|\u00a0NewsBreak<\/a>\u00a0|\u00a0Reddit<\/a>\u00a0|\u00a0Instagram<\/a>\u00a0|\u00a0Facebook\u00a0<\/a>| Twitter<\/a>\u00a0| Or sign up for our\u00a0RSS Feed<\/a><\/p>\n Related Stories<\/p>\n \t\t\t\t\t\t\t\t \n\t\t\t\t\tUnder Texas\u2019 \u2018enforcement discretion\u2019 policy, companies were allowed to vent or burn off pollutants, as long as they are reported. Recent weatherization requirements for power plants did not apply to gas processing plants.\t\t\t\t<\/p>\n
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