The data shows the biggest leaks are in the Permian basin of Texas and New Mexico. Photo via Getty Images

American oil and natural gas wells, pipelines and compressors are spewing three times the amount of the potent heat-trapping gas methane as the government thinks, causing $9.3 billion in yearly climate damage, a new comprehensive study calculates.

But because more than half of these methane emissions are coming from a tiny number of oil and gas sites, 1% or less, this means the problem is both worse than the government thought but also fairly fixable, said the lead author of a study in Wednesday's journal Nature.

The same issue is happening globally. Large methane emissions events around the world detected by satellites grew 50% in 2023 compared to 2022 with more than 5 million metric tons spotted in major fossil fuel leaks, the International Energy Agency reported Wednesday in their Global Methane Tracker 2024. World methane emissions rose slightly in 2023 to 120 million metric tons, the report said.

“This is really an opportunity to cut emissions quite rapidly with targeted efforts at these highest emitting sites,” said lead author Evan Sherwin, an energy and policy analyst at the U.S. Department of Energy's Lawrence Berkeley National Lab who wrote the study while at Stanford University. “If we can get this roughly 1% of sites under control, then we're halfway there because that's about half of the emissions in most cases.”

Sherwin said the fugitive emissions come throughout the oil and gas production and delivery system, starting with gas flaring. That's when firms release natural gas to the air or burn it instead of capturing the gas that comes out of energy extraction. There's also substantial leaks throughout the rest of the system, including tanks, compressors and pipelines, he said.

“It's actually straightforward to fix,” Sherwin said.

In general about 3% of the U.S. gas produced goes wasted into the air, compared to the Environmental Protection Agency figures of 1%, the study found. Sherwin said that's a substantial amount, about 6.2 million tons per hour in leaks measured over the daytime. It could be lower at night, but they don't have those measurements.

The study gets that figure using one million anonymized measurements from airplanes that flew over 52% of American oil wells and 29% of gas production and delivery system sites over a decade. Sherwin said the 3% leak figure is the average for the six regions they looked at and they did not calculate a national average.

Methane over a two-decade period traps about 80 times more heat than carbon dioxide, but only lasts in the atmosphere for about a decade instead of hundreds of years like carbon dioxide, according to the EPA.

About 30% of the world's warming since pre-industrial times comes from methane emissions, said IEA energy supply unit head Christophe McGlade. The United States is the No. 1 oil and gas production methane emitter, with China polluting even more methane from coal, he said.

Last December, the Biden administration issued a new rule forcing the U.S. oil and natural gas industry to cut its methane emissions. At the same time at the United Nations climate negotiations in Dubai, 50 oil companies around the world pledged to reach near zero methane emissions and end routine flaring in operations by 2030. That Dubai agreement would trim about one-tenth of a degree Celsius, nearly two-tenths of a degree Fahrenheit, from future warming, a prominent climate scientist told The Associated Press.

Monitoring methane from above, instead of at the sites or relying on company estimates, is a growing trend. Earlier this month the market-based Environmental Defense Fund and others launched MethaneSAT into orbit. For energy companies, the lost methane is valuable with Sherwin's study estimate it is worth about $1 billion a year.

About 40% of the global methane emissions from oil, gas and coal could have been avoided at no extra cost, which is “a massive missed opportunity,” IEA's McGlade said. The IEA report said if countries do what they promised in Dubai they could cut half of the global methane pollution by 2030, but actions put in place so far only would trim 20% instead, “a very large gap between emissions and actions,” McGlade said.

“It is critical to reduce methane emissions if the world is to meet climate targets,” said Cornell University methane researcher Robert Horwath, who wasn't part of Sherwin's study.

“Their analysis makes sense and is the most comprehensive study by far out there on the topic,” said Howarth, who is updating figures in a forthcoming study to incorporate the new data.

The overflight data shows the biggest leaks are in the Permian basin of Texas and New Mexico.

“It's a region of rapid growth, primarily driven by oil production,” Sherwin said. “So when the drilling happens, both oil and gas comes out, but the main thing that the companies want to sell in most cases was the oil. And there wasn't enough pipeline capacity to take the gas away” so it spewed into the air instead.

Contrast that with tiny leak rates found in drilling in the Denver region and the Pennsylvania area. Denver leaks are so low because of local strictly enforced regulations and Pennsylvania is more gas-oriented, Sherwin said.

This shows a real problem with what National Oceanic and Atmospheric Association methane-monitoring scientist Gabrielle Petron calls “super-emitters."

“Reliably detecting and fixing super-emitters is a low hanging fruit to reduce real life greenhouse gas emissions,” Petron, who wasn't part of Sherwin's study, said. “This is very important because these super-emitter emissions are ignored by most ‘official’ accounting.”

Stanford University climate scientist Rob Jackson, who also wasn't part of the study, said, “a few facilities are poisoning the air for everyone.”

“For more than a decade, we’ve been showing that the industry emits far more methane than they or government agencies admit," Jackson said. “This study is capstone evidence. And yet nothing changes.”

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Engie to add 'precycling' agreements for forthcoming solar projects

reduce, reuse

Houston-based Engie North America has partnered with Arizona-based Solarcycle to recycle 1 million solar panels on forthcoming projects with a goal of achieving project circularity.

The collaboration allows Engie to incorporate "precycling" provisions into power purchase agreements made on 375 megawatts worth of projects in the Midwest, which are expected to be completed in the next few years, according to a news release from Engie.

Engie will use Solarcycle's advanced tracking capabilities to ensure that every panel on the selected projects is recycled once it reaches its end of life, and that the recovered materials are returned to the supply chain.

Additionally, all construction waste and system components for the selected projects will be recycled "to the maximum degree possible," according to Engie.

“We are delighted to bring this innovative approach to life. Our collaboration with Solarcycle demonstrates the shared commitment we have to the long-term sustainability of our industry,” Caroline Mead, SVP power marketing at ENGIE North America, said in the release.

Solarcyle, which repairs, refurbishes, reuses and recycles solar power systems, estimates that the collaboration and new provisions will help divert 48 million pounds of material from landfills and avoid 33,000 tons of carbon emissions.

“ENGIE’s precycling provision sets a new precedent for the utility-scale solar industry by proving that circular economy principles can be achieved without complex regulatory intervention and in a way that doesn’t require an up-front payment," Jesse Simons, co-founder and chief commercial officer at SOLARCYCLE, added in the release. "We’re happy to work creatively with leaders like ENGIE to support their commitment to circularity, domestic energy, and sustainability.”

Texas gets one step closer to CCUS permitting authority

The View From HETI

This month, the U.S. Environmental Protection Agency (EPA) announced its proposed approval of Texas request for permitting authority under the Safe Drinking Water Act (SDWA) for Class VI underground injection wells for carbon capture, utilization and storage (CCUS) in the state. The State of Texas already has permitting authority for Class I-V injection wells. Granting authority for Class VI wells recognizes that Texas is well positioned to protect its underground sources of drinking water while also advancing economic opportunity and energy security.

“In the Safe Drinking Water Act, Congress laid out a clear vision for delegating decision-making from EPA to states that have local expertise and understand their water resources, geology, communities, and opportunities for economic growth,” said EPA Administrator Lee Zeldin in a news release. “EPA is taking a key step to support cooperative federalism by proposing to approve Texas to permit Class VI wells in the state.”

The Greater Houston Partnership’s Houston Energy Transition Initiative (HETI) has supported efforts to bring CCUS to a broader commercial scale since the initiative’s inception. Earlier this year, HETI commissioned a “study of studies” by Texas A&M University’s Energy Institute and Mary K. O’Connor Process Safety Center on the operational history and academic literature of CCUS safety in the United States. The report revealed that with state and federal regulations as well as technical and engineering technologies available today, CCUS is safe and presents a very low risk of impacts to human life. This is useful research for stakeholders interested in learning more about CCUS.

“The U.S. EPA’s proposal to approve Texas’ application for Class VI well permitting authority is yet another example of Texas’ continued leadership in meeting the dual challenge of producing more energy with less emissions,” said Jane Stricker, Senior Vice President of Energy at the Greater Houston Partnership and Executive Director of the Houston Energy Transition Initiative. “We applaud the U.S. EPA and Texas Railroad Commission for their collaborative efforts to ensure the supply of safe, affordable and reliable energy, and we call on all stakeholders to voice their support for the application during the public comment period.”

The U.S. EPA has announced a public comment period that will include a virtual public hearing on July 24, 2025 from 5-8 pm and conclude on July 31, 2025.

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This article originally ran on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

Houston team’s discovery brings solid-state batteries closer to EV use

a better battery

A team of researchers from the University of Houston, Rice University and Brown University has uncovered new findings that could extend battery life and potentially change the electric vehicle landscape.

The team, led by Yan Yao, the Hugh Roy and Lillie Cranz Cullen Distinguished Professor of Electrical and Computer Engineering at UH, recently published its findings in the journal Nature Communications.

The work deployed a powerful, high-resolution imaging technique known as operando scanning electron microscopy to better understand why solid-state batteries break down and what could be done to slow the process.

“This research solves a long-standing mystery about why solid-state batteries sometimes fail,” Yao, corresponding author of the study, said in a news release. “This discovery allows solid-state batteries to operate under lower pressure, which can reduce the need for bulky external casing and improve overall safety.”

A solid-state battery replaces liquid electrolytes found in conventional lithium-ion cells with a solid separator, according to Car and Driver. They also boast faster recharging capabilities, better safety and higher energy density.

However, when it comes to EVs, solid-state batteries are not ideal since they require high external stack pressure to stay intact while operating.

Yao’s team learned that tiny empty spaces, or voids, form within the solid-state batteries and merge into a large gap, which causes them to fail. The team found that adding small amounts of alloying elements, like magnesium, can help close the voids and help the battery continue to function. The team captured it in real-time with high-resolution videos that showed what happens inside a battery while it’s working under a scanning electron microscope.

“By carefully adjusting the battery’s chemistry, we can significantly lower the pressure needed to keep it stable,” Lihong Zhao, the first author of this work, a former postdoctoral researcher in Yao’s lab and now an assistant professor of electrical and computer engineering at UH, said in the release. “This breakthrough brings solid-state batteries much closer to being ready for real-world EV applications.”

The team says it plans to build on the alloy concept and explore other metals that could improve battery performance in the future.

“It’s about making future energy storage more reliable for everyone,” Zhao added.

The research was supported by the U.S. Department of Energy’s Battery 500 Consortium under the Vehicle Technologies Program. Other contributors were Min Feng from Brown; Chaoshan Wu, Liqun Guo, Zhaoyang Chen, Samprash Risal and Zheng Fan from UH; and Qing Ai and Jun Lou from Rice.