Smart financial tool from oil and gas industry veterans ensures funds are available to seal inactive wells in the future. Image via Shutterstock.

Think back to when your first friend got their driver’s license. Everyone wanted a ride, but when it came time to fill the tank, pay for repairs and maintenance, or – worst case, perform some autobody work to resolve damage incurred in a fender-bender – the driver usually got caught holding the bag.

For the oil and gas industry, the same thing often happens with old wells that have stopped producing at an economic rate. When production is high and prices are favorable, everyone wants a piece of the action. But as soon as a well’s production slows to a crawl or the bottom falls out of the market (again), investing partners scatter like cockroaches into obscurity, leaving the majority owner with the financial and environmental burden to properly seal up the well.

Just over 100 years ago, the Texas Railroad Commission, which serves as the primary governing body for oil and gas wells developed across the state, enacted the first regulation calling for due care when plugging inactive or otherwise deemed useless wells. The policy laid the groundwork for keeping potential contaminants contained to prevent environmental and safety hazards.

Oklahoma followed suit some 15+ years later, subsequently followed by California another dozen years after that. The remaining states have enacted similar laws within just the last 40 years. But that’s not to say that the industry was not properly closing off wellbores after useful life. Nay, it merely highlights the pace at which regulatory actions move across the nation after inception in a single state.

Of particular note, but perhaps not as obvious, is the time lag between Texas’s first policies demanding the costly, albeit necessary, activities to plug and abandon (P&A) a well and the Asset Retirement Obligation (ARO), an accounting treatment introduced in 2001 that ensures companies recognize and retain the financial liability for completing end-of-useful-life requirements.

Unfortunately, ARO is truly just an accounting concept, so if a company becomes insolvent, there is limited chance the investment necessary to properly P&A a well will be available. This does not bode well for the industry, nor the environment, as valuable hydrocarbons are lost from leaking, seeping, and weeping wells across the country.

Let’s not catastrophize the potential environmental damage here, however. Highly conservative estimates made by the EPA in 2022 claim over 2 million potentially orphaned wells produce methane emissions equivalent to approximately 1% of all cars on the road across the United States. No one argues that this is acceptable, but it does put things into perspective, given that approximately 1/3 of global emissions are attributable to light duty and commercial vehicles on the road.

To bolster the industry with confidence the cash investment necessary for P&A activities will be readily available upon asset retirement, one company looked outside of energy for guidance. Embracing a model most typically associated with life insurance, OneNexus Assurance provides contractual certainty to upstream operators that funds will be available to cover the associated end-of-useful-life costs (depending on the benefit amount purchased, of course).

“Our business model provides the oil and gas industry much-needed peace of mind that capital is available when inevitable ARO funding becomes imminent and offers a preferable alternative to trust funds, surety bonds, and sinking funds as a means of prefunding decommissioning liabilities," says Tony Sanchez, founder and CEO of OneNexus, in a recent release.

The OneNexus approach allows the primary operator to collect monthly payments for end-of-useful-life costs long before the well is depleted from other invested partners.

“OneNexus Assurance is a game changer,” continues Sanchez, “It enables responsible parties to pay towards decommissioning funding in today’s dollars at a substantial discount to the ultimate plugging cost, it guarantees that a pre-determined amount decided by the client is secured for the future, and it does away with the need to chase payments later.”

While this solution does not fully resolve the problem of orphaned wells – the aforementioned 2 million (or less) wells no longer producing but not fully sealed off, either – it does at least guarantee that whomever gets caught holding the bag at the end will find some dollars inside.

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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.