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UH researchers make breakthrough in cutting carbon capture costs

Carbon breakthrough

A team from UH has published two breakthrough studies that could help cut costs and boost efficiency in carbon capture. Photo courtesy UH.

A team of researchers at the University of Houston has made two breakthroughs in addressing climate change and potentially reducing the cost of capturing harmful emissions from power plants.

Led by Professor Mim Rahimi at UH’s Cullen College of Engineering, the team released two significant publications that made significant strides relating to carbon capture processes. The first, published in Nature Communications, introduced a membraneless electrochemical process that cuts energy requirements and costs for amine-based carbon dioxide capture during the acid gas sweetening process. Another, featured on the cover of ES&T Engineering, demonstrated a vanadium redox flow system capable of both capturing carbon and storing renewable energy.

“These publications reflect our group’s commitment to fundamental electrochemical innovation and real-world applicability,” Rahimi said in a news release. “From membraneless systems to scalable flow systems, we’re charting pathways to decarbonize hard-to-abate sectors and support the transition to a low-carbon economy.”

According to the researchers, the “A Membraneless Electrochemically Mediated Amine Regeneration for Carbon Capture” research paper marked the beginning of the team’s first focus. The research examined the replacement of costly ion-exchange membranes with gas diffusion electrodes. They found that the membranes were the most expensive part of the system, and they were also a major cause of performance issues and high maintenance costs.

The researchers achieved more than 90 percent CO2 removal (nearly 50 percent more than traditional approaches) by engineering the gas diffusion electrodes. According to PhD student and co-author of the paper Ahmad Hassan, the capture costs approximately $70 per metric ton of CO2, which is competitive with other innovative scrubbing techniques.

“By removing the membrane and the associated hardware, we’ve streamlined the EMAR workflow and dramatically cut energy use,” Hassan said in the news release. “This opens the door to retrofitting existing industrial exhaust systems with a compact, low-cost carbon capture module.”

The second breakthrough, published by PhD student Mohsen Afshari, displayed a reversible flow battery architecture that absorbs CO2 during charging and releases it upon discharge. The results suggested that the technology could potentially provide carbon removal and grid balancing when used with intermittent renewables, such as solar or wind power.

“Integrating carbon capture directly into a redox flow battery lets us tackle two challenges in one device,” Afshari said in the release. “Our front-cover feature highlights its potential to smooth out renewable generation while sequestering CO2.”

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Meta and OpenAI agree to follow Texas’ new standards for data centers

data demands

Meta Platforms, the parent company of Facebook and Instagram; OpenAI, the owner of ChatGPT; and other tech companies have agreed to follow Texas’ new standards for the development of data centers.

As Texas politicians respond to communities’ increased pushback against power- and water-dependent data centers, Gov. Greg Abbott recently established guidelines for data center projects. President Trump and Gina Jinojosa, a Democrat who will oppose Abbott in the November election, have leveled criticism about the new rules.

Abbott recently directed the Public Utility Commission of Texas and Electric Reliability Council of Texas (ERCOT) to ensure data centers:

  • Pay for their electrical infrastructure instead of shifting costs to families and small businesses
  • Reuse their own water
  • Reduce the cost of electricity for Texans
  • Prevent disruption to residential neighborhoods
  • Eliminate reliance on taxpayer-funded financial incentives

Abbott and Trump differ over data center ‘guardrails’

After releasing the guidelines, Abbott put a moratorium on new data centers in the state.

Abbott directed the Public Utility Commission and ERCOT to audit all data center projects going through ERCOT’s approval process for connecting to the state’s power grid. The two agencies must complete their review before a data center project can join the grid. Any project that fails to comply with the agencies’ requirements won’t be permitted access to the grid.

“I established clear guardrails to ensure data centers protect our electric grid, conserve our water, respect our neighborhoods, and pay their own way,” Abbott, who’s running for a fourth consecutive term as governor, said in a news release. “They must not pass costs on to Texas families or interfere with their quality of life.”

Abbott has hailed Texas as “the epicenter of AI development.”

In a recent interview with Punchbowl News, President Trump questioned the data center rules imposed by Abbott, a fellow Republican.

“I saw Texas the other day sort of is against data centers,” Trump said. “I think it’s a mistake. And I’m not taking positions, I just think it’s a mistake, because there are other communities that want it. When a community wants it, it means a lot of money is going to come into that community.”

In a statement, Gina Hinojosa, the Democratic nominee for Texas governor, stresses that the governor’s data center standards don’t wield the same power that laws would.

“We need a moratorium on data centers until the legislature can meet to put in place real protections so Texans can have a seat at the table to decide if and how data centers come into their communities,” Hinojosa said. “When the companies being regulated are cheering for the rules, you know the rules were written for them, not for Texans.”

The Texas Tribune has identified at least 248 planned data centers in the state, with perhaps hundreds more that aren’t as far along in the development process. At least 355 data centers already operate in Texas. The majority of the new data centers will help power AI software and services.

Meta promises it will be ‘paying our own way‘

In a blog post, Meta commends Abbott’s data center initiative. Meta and investment manager BlackRock are investing more than $10 billion to build a data center campus in El Paso. The 12-building campus, expected to go online in 2028, will be capable of delivering 1 gigawatt of computing power to support Meta’s AI technology.

BlackRock will own 80 percent of the project, and Meta will own the remaining 20 percent.

Meta’s two other Texas data centers are in Fort Worth and Temple.

“Whether it’s creating jobs, growing opportunities for local businesses, or improving energy and water infrastructure, we’re committed to strengthening communities and paying our own way,” Meta says of Abbott’s directive.

OpenAI commits to helping Texas maintain AI leadership

In an Aug. 7 letter to Abbott, OpenAI says it, too, will follow Texas’ data center standards. In fact, the company says the standards reflect practices it already applies to data center projects.

“Texas has built a strong environment for innovation, energy, and economic growth,” the company says. “OpenAI wants to help Texas remain a national leader in AI while demonstrating that this growth can be responsible, reliable, and beneficial to Texans.”

OpenAI is building a $470 million data center in Milam County, and last year it launched operations at a data center campus in Abilene as part of its $500 billion Stargate initiative with Oracle and SoftBank.

Abbott’s office also announced Aug. 11 that EdgeConneX and Stream Data Centers have also pledged to comply with the regulations. Read more here.

ExxonMobil expands Gulf Coast CCS business with Louisiana deal

carbon contract

Spring-based energy powerhouse ExxonMobil has picked up another project in the carbon capture and storage (CCS) market.

Natural gas pipeline operator Williams Cos. has tapped ExxonMobil to transport and store up to one metric ton per year of CO2 from Williams’ natural gas collection and processing plant in southwest Louisiana’s Haynesville Shale.

Williams will transport natural gas via its Louisiana Energy Gateway pipeline, then process the natural gas and deliver it to the Gulf Coast for export as liquefied natural gas (LNG). The LNG will be used in power generation, residential and commercial heating, and industrial processes.

Williams recently agreed to acquire Momentum Midstream for up to $5.5 billion to expand Williams’ LNG presence in the Haynesville Shale. Haynesville is the country’s third-largest producer of natural gas.

Once the deal closes, Williams will own a $1.5 billion project in southwest Louisiana that will expand capacity of the Transco natural gas distribution system. The system serves power and LNG-export customers. Williams will also gain over 4,000 miles of pipeline and more than one million acres.

While Williams is based in Tulsa, Oklahoma, it has a significant presence in Houston. Last month, Green Street’s Real Estate Alert reported Williams bought the 64-story, 1.4 million-square-foot Williams Tower south of The Galleria from Invesco Real Estate for more than $300 million. The company will occupy about 360,000 square feet in the skyscraper for its Houston hub.

Williams employs about 800 people in Bayou City, including roughly 700 who work at Williams Tower, and plans to hire another 100 by the end of this year.

The Williams deal is ExxonMobil’s seventh CCS contract. ExxonMobil’s CCS portfolio supports LNG, lower-carbon-intensity steel, ammonia, natural gas processing, industrial gases and methanol.

ExxonMobil has established a “carbon superhighway” along the Gulf Coast to fuel its CCS business. The company owns and operates a more than 1,300-mile CO2 pipeline system, the largest in the U.S.

“Carbon capture is becoming an increasingly important part of industrial operations, but capture alone doesn’t solve the problem of high emissions,” says ExxonMobil. “What matters next is how CO2 is transported, used, and stored.”

ExxonMobil’s CCS initiatives are aimed at capturing a chunk of the rapidly growing CCS market in the U.S. Straits Research forecasts the market will grow from $5.66 billion this year to $13.56 billion by 2034.

“It’s not every day you get to witness the birth of a new American industry, but that’s exactly what’s happening right now at the U.S. Gulf Coast,” Dominic Genetti, senior vice president of CCS at ExxonMobil, wrote in an article published last year on the company’s website.

Fervo Energy, Mercury Fund leaders named first experts in residence for TEX-E

energy mentors

Two leading companies in Houston's clean energy scene have been named the Texas Exchange for Energy & Climate Entrepreneurship's first experts in residence.

TEX-E announced this month that Houston-based geothermal unicorn Fervo Energy and venture capital firm Mercury Fund have joined the nonprofit's new Expert-in-Residence partnership. The program aims to connect TEX-E Fellows with "the people and organizations shaping the future of energy and entrepreneurship."

The 2026 TEX-E Fellows were named in June and include 67 students from six Texas universities and the Massachusetts Institute of Technology. Nineteen are from Houston universities. See the full list here.

Through the Expert-in-Residence program, fellows will be able to network and work with:

"More than anything, students need the determination and creativity to step outside of their comfort zones and tackle problems that lack clear answers. At Fervo, we've consistently bet on young people who lack traditional 'hard skills' but are willing to embrace uncertainty and learn on the job. That open-mindedness will take students far," Jewett said in a prepared statement. Fervo named Jewett as COO in June.

TEX-E was founded in 2022 through partnerships with MIT Martin Trust Center for Entrepreneurship and Greentown Labs. It works with university students from six schools: Rice University, University of Houston, Prairie View A&M University, The University of Texas at Austin, Texas A&M University and MIT.

The organization named Houston venture capital and innovation leader Sandy Guitar as its new executive director last year. Guitar previously served as general partner and managing director at Houston-based VC firm HX Venture Fund and is co-founder of Weathergage Capital.

TEX-E is known for its student track within the Energy Venture Day and Pitch Competition at CERAWeek. It awarded $50,000 to student teams from the University of Texas and Rice University. Read more here.

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