The view from heti

Tackling methane in the energy transition: Takeaways from Global Methane Hub and HETI

Leaders from across the energy value chain gathered in Houston for a roundtable to discuss tackling methane. Photo via Canva

Leaders from across the energy value chain gathered in Houston for a roundtable hosted by the Global Methane Hub (GMH) and the Houston Energy Transition Initiative (HETI). The session underscored the continued progress to reduce methane emissions as the energy industry addresses the dual challenge of producing more energy that the world demands while simultaneously reducing emissions.

The Industry’s Shared Commitment and Challenge

There’s broad recognition across the industry that methane emissions must be tackled with urgency, especially as natural gas demand is projected to grow 3050% by 2050. This growth makes reducing methane leakage more than a sustainability issue—it’s also a matter of global market access and investor confidence.

Solving this issue, however, requires overcoming technical challenges that span infrastructure, data acquisition, measurement precision, and regulatory alignment.

Getting the Data Right: Top-Down vs. Bottom-Up

Accurate methane leak monitoring and quantification is the cornerstone of any effective mitigation strategy. A key point of discussion was the differentiation between top-down and bottom-up measurement approaches.

Top-down methods such as satellite and aerial monitoring offer broad-area coverage and can identify large emission plumes. Technologies such as satellite-based remote sensing (e.g., using high-resolution imagery) or airborne methane surveys (using aircraft equipped with tunable diode laser absorption spectroscopy) are commonly used for wide-area detection. While these methods are efficient for identifying large-scale emission hotspots, their accuracy is lower when it comes to quantifying emissions at the source, detecting smaller, diffuse leaks, and providing continuous monitoring.

In contrast, bottom-up methods focus on direct, on-site detection at the equipment level, providing more granular and precise measurements. Technologies used here include optical gas imaging (OGI) cameras, flame ionization detectors (FID), and infrared sensors, which can directly detect methane at the point of release. These methods are more accurate but can be resource and infrastructure intensive, requiring frequent manual inspections or continuous monitoring installations, which can be costly and technically challenging in certain environments.

The challenge lies in combining both methods: top-down for large-scale monitoring and bottom-up for detailed, accurate measurements. No single technology is perfect or all-inclusive. An integrated approach that uses both datasets will help to create a more comprehensive picture of emissions and improve mitigation efforts.

From Detection to Action: Bridging the Gap

Data collection is just the first step—effective action follows. Operators are increasingly focused on real-time detection and mitigation. However, operational realities present obstacles. For example, real-time leak detection and repair (LDAR) systems—particularly for continuous monitoring—face challenges due to infrastructure limitations. Remote locations like the Permian Basin may lack the stable power sources needed to run continuous monitoring equipment to individual assets.

Policy, Incentives, and Regulatory Alignment

Another critical aspect of the conversation was the need for policy incentives that both promote best practices and accommodate operational constraints. Methane fees, introduced to penalize emissions, have faced widespread resistance due to their design flaws that in many cases actually disincentivize methane emissions reductions. Industry stakeholders are advocating for better alignment between policy frameworks and operational capabilities.

In the United States, the Subpart W rule, for example, mandates methane reporting for certain facilities, but its implementation has raised concerns about the accuracy of some of the new reporting requirements. Many in the industry continue to work with the EPA to update these regulations to ensure implementation meets desired legislative expectations.

The EU’s demand for quantified methane emissions for imported natural gas is another driving force, prompting a shift toward more detailed emissions accounting and better data transparency. Technologies that provide continuous, real-time monitoring and automated reporting will be crucial in meeting these international standards.

Looking Ahead: Innovation and Collaboration

The roundtable highlighted the critical importance of advancing methane detection and mitigation technologies and integrating them into broader emissions reduction strategies. The United States’ 45V tax policy—focused on incentivizing production of low-carbon intensity hydrogen often via reforming of natural gas—illustrates the growing momentum towards science-based accounting and transparent data management. To qualify for 45V incentives, operators can differentiate their lower emissions intensity natural gas by providing foreground data to the EPA that is precise and auditable, essential for the industry to meet both environmental and regulatory expectations. Ultimately, the success of methane reduction strategies depends on collaboration between the energy industry, technology providers, and regulators.

The roundtable underscored that while significant progress has been made in addressing methane emissions, technical, regulatory, and operational challenges remain. Collaboration across industry, government, and technology providers is essential to overcoming these barriers. With better data, regulatory alignment, and investments in new technologies, the energy sector can continue to reduce methane emissions while supporting global energy demands.

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HETI thanks Chris Duffy, Baytown Blue Hydrogen Venture Executive, ExxonMobil; Cody Johnson, CEO, SCS Technologies; and Nishadi Davis, Head of Carbon Advisory Americas, wood plc, for their participation in this event.

This article originally appeared 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.

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A View From HETI

Hobby Airport's new solar canopy is operating at 100% capacity. Photo courtesy Houston Airports.

Houston's William P. Hobby Airport is generating its own clean energy.

Houston Aiports announced that Hobby's red garage is now home to a "solar canopy" that is producing energy at 100 percent capacity to power daily operations. The photovoltaic (PV) solar system generated more than 1.1 gigawatt-hours of electricity in testing, and is expected to produce up to 1 megawatt-hour now that it's operating at full power.

“This project is proof that sustainability can be practical, visible and directly tied to the passenger experience,” Jim Szczesniak, director of aviation for Houston Airports, said in a news release. “Passengers now park under a structure that shields their cars from the Texas sun while generating clean energy that keeps airport operations running efficiently, lowering overall peak demand electrical costs during the day and our carbon footprint. It’s a win for travelers, the city and the planet.”

The project was completed by Texas A&M Engineering Experiment Station (TEES) and CenterPoint Energy. It's part of Houston Airport's efforts to reduce carbon emissions by 40 percent over its 2019 baseline.

In a separate announcement, the airport system also shared that it recently reached Level 3 in the Airports Council International (ACI) Airport Carbon Accreditation program after reducing emissions by 19 percent in three years. This includes reductions at George Bush Intercontinental Airport (IAH), Hobby and Ellington Airport/Houston Spaceport.

The reductions have come from initiatives such as adding electric vehicles to airport fleets, upgrading airfield lighting with LED bulbs, adding smarter power systems to terminals, and improving IAH's central utility plant with more efficient equipment. Additionally, the expansion to Hobby's West Concourse and renovations at IAH Terminal B incorporate cleaner equipment and technology.

According to Houston Airports, from 2019 to 2023:

  • IAH reduced emissions by 17 percent
  • Hobby reduced emissions by 32 percent
  • Ellington Airport reduced emissions by 4 percent

"I see firsthand how vital it is to link infrastructure with sustainability,” Houston City Council Member Twila Carter, chair of the council’s Resilience Committee, said in the release. “Reducing carbon emissions at our airports isn’t just about cleaner travel — it’s about smarter planning, safer communities and building a Houston that can thrive for generations to come.”

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