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

UH researchers make breakthrough in cutting carbon capture costs

carbon breakthrough

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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This article originally appeared on our sister site, EnergyCapitalHTX.com.

Vicki Hollub, president and CEO of Occidental, said the company's Stratos DAC project is on track to begin capturing CO2 later this year. Photo via 1pointfive.com

Oxy's $1.3B Texas carbon capture facility on track to​ launch this year

gearing up

Houston-based Occidental Petroleum is gearing up to start removing CO2 from the atmosphere at its $1.3 billion direct air capture (DAC) project in the Midland-Odessa area.

Vicki Hollub, president and CEO of Occidental, said during the company’s recent second-quarter earnings call that the Stratos project — being developed by carbon capture and sequestration subsidiary 1PointFive — is on track to begin capturing CO2 later this year.

“We are immensely proud of the achievements to date and the exceptional record of safety performance as we advance towards commercial startup,” Hollub said of Stratos.

Carbon dioxide captured by Stratos will be stored underground or be used for enhanced oil recovery.

Oxy says Stratos is the world’s largest DAC facility. It’s designed to pull 500,000 metric tons of carbon dioxide from the air and either store it underground or use it for enhanced oil recovery. Enhanced oil recovery extracts oil from unproductive reservoirs.

Most of the carbon credits that’ll be generated by Stratos through 2030 have already been sold to organizations such as Airbus, AT&T, All Nippon Airways, Amazon, the Houston Astros, the Houston Texans, JPMorgan, Microsoft, Palo Alto Networks and TD Bank.

The infrastructure business of investment manager BlackRock has pumped $550 million into Stratos through a joint venture with 1PointFive.

As it gears up to kick off operations at Stratos, Occidental is also in talks with XRG, the energy investment arm of the United Arab Emirates-owned Abu Dhabi National Oil Co., to form a joint venture for the development of a DAC facility in South Texas. Occidental has been awarded up to $650 million from the U.S. Department of Energy to build the South Texas DAC hub.

The South Texas project, to be located on the storied King Ranch, will be close to industrial facilities and energy infrastructure along the Gulf Coast. Initially, the roughly 165-square-mile site is expected to capture 500,000 metric tons of carbon dioxide per year, with the potential to store up to 3 billion metric tons of CO2 per year.

“We believe that carbon capture and DAC, in particular, will be instrumental in shaping the future energy landscape,” Hollub said.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.


HYCO1 has signed an agreement to convert 1 million tons per year of raw CO2 into industrial-grade syngas at a new carbon capture project in Malaysia. Getty Images

Houston climatech co. to lead one of world's largest carbon capture projects

Big Deal

Houston-based CO2 utilization company HYCO1 has signed a memorandum of understanding with Malaysia LNG Sdn. Bhd., a subsidiary of Petronas, for a carbon capture project in Malaysia, which includes potential utilization and conversion of 1 million tons of carbon dioxide per year.

The project will be located in Bintulu in Sarawak, Malaysia, where Malaysia LNG is based, according to a news release. Malaysia LNG will supply HYCO1 with an initial 1 million tons per year of raw CO2 for 20 years starting no later than 2030. The CCU plant is expected to be completed by 2029.

"This is very exciting for all stakeholders, including HYCO1, MLNG, and Petronas, and will benefit all Malaysians," HYCO1 CEO Gregory Carr said in the release. "We approached Petronas and MLNG in the hopes of helping them solve their decarbonization needs, and we feel honored to collaborate with MLNG to meet their Net Zero Carbon Emissions by 2050.”

The project will convert CO2 into industrial-grade syngas (a versatile mixture of carbon monoxide and hydrogen) using HYCO1’s proprietary CUBE Technology. According to the company, its CUBE technology converts nearly 100 percent of CO2 feed at commercial scale.

“Our revolutionary process and catalyst are game changers in decarbonization because not only do we prevent CO2 from being emitted into the atmosphere, but we transform it into highly valuable and usable downstream products,” Carr added in the release.

As part of the MoU, the companies will conduct a feasibility study evaluating design alternatives to produce low-carbon syngas.

The companies say the project is expected to “become one of the largest CO2 utilization projects in history.”

HYCO1 also recently announced that it is providing syngas technology to UBE Corp.'s new EV electrolyte plant in New Orleans. Read more here.

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This story originally appeared on our sister site, EnergyCapitalHTX.com.

Houston-based CO2 Energy Transition Corp., a SPAC focused on carbon capture, utilization, and storage (CCUS), raised $69 million in its IPO to target mid-sized CCUS companies. Photo via Getty Images

Houston energy transition tech SPAC goes public through IPO

BLANK CHECK

Houston-based CO2 Energy Transition Corp. — a “blank check” company initially targeting the carbon capture, utilization, and storage (CCUS) sector — closed November 22 on its IPO, selling 6 million units at $10 apiece.

“Blank check” companies are formally known as special purpose acquisition companies (SPACs). A SPAC aims to complete a merger, acquisition, share exchange, share purchase, reorganization or similar business combination in certain business sectors. CO2 Energy Transition will target companies valued at $150 million to $250 million.

Each CO2 Energy Transition unit consists of one share of common stock, one warrant to purchase one share of common stock at a per-share price of $11.50, and the right to receive one-eighth of a share of common stock based on certain business conditions being met.

The IPO also included the full exercise of the underwriter’s option to buy 900,000 units to cover over-allotments. Kingswood Capital Partners LLC was the sole underwriter.

Gross proceeds from the IPO totaled $69 million. The money will enable the company to pursue CCUS opportunities.

“Recent bipartisan support for carbon capture legislation heavily emphasized the government’s willingness to advance and support technologies for carbon capture, utilization, storage, and other purposes as efforts to reduce greenhouse gas emissions [continue],” Co2 Energy Transition says in an October 2024 filing with the U.S. Securities and Exchange Commission (SEC).

Brady Rogers is president and CEO of CO2 Energy Transition. He also is CEO of Carbon Capture Development Co., a Los Angeles-based developer of direct air capture (DAC) technology, and president of Houston-based Antelope Energy Partners LLC, a provider of oil and gas services.

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This article originally ran on EnergyCapital.

If we want to see real change, we need action by all parties. Photo via Getty Images

Texas vs the nation: Comparing energy grid resilience across America

guest column

The 2024 Atlantic hurricane season has proven disastrous for the United States. On July 8th, Hurricane Beryl barreled into Texas as a Category 1 storm knocking out power for nearly 3 million, causing over $2.5 billion in damages, and resulting in the deaths of at least 42 people.

More recently, Hurricanes Helene and Milton tore through the East Coast, dropping trillions of gallons of rain on Florida, Georgia, South Carolina, North Carolina, Virginia, and Tennessee, causing dams to collapse, flash flooding, trees to fall, millions of power outages, complete destruction of homes and businesses, and the deaths of hundreds.

Amidst the horror and rescue efforts, wariness of the increasing strength of natural disasters, and repeated failures of energy grids around the nation begs a few questions.

  1. Is there a version of a power grid that can better endure hurricanes, heat waves, and freezes?
  2. How does the Texas grid compare to other regional grids in the United States?
  3. What can we do to solve our power grid problems and who is responsible for implementing these solutions?

Hurricane-proof grids do not exist

There is no version of a grid anywhere in the United States that can withstand the brunt of a massive hurricane without experiencing outages.

The wind, rain, and flooding are simply too much to handle.

Some might wonder, “What if we buried the power lines?” Surely, removing the power lines from the harsh winds, rain, flying debris, and falling tree branches would be enough to keep the lights on, right?

Well, not necessarily. Putting aside the fact that burying power lines is incredibly expensive – estimates range from thousands to millions of dollars per mile buried – extended exposure to water from flood surges can still cause damage to buried lines. To pile on further, flood surges are likely to seriously damage substations and transformers. When those components fail, there’s no power to run through the lines, buried or otherwise.

Heat waves and winter freezes are a different story

During extreme weather events like heat waves or winter freezes, the strain on the grid goes beyond simple issues of generation and distribution—it’s also a matter of human behavior and grid limitations.

Building and maintaining a power grid is extremely expensive, and storing electricity is not only costly but technically challenging. Most grids are designed with little "buffer" capacity to handle peak demand moments, because much of the infrastructure sits idle during normal conditions. Imagine investing billions of dollars in a power plant or wind farm that only operates at full capacity a fraction of the time. It’s difficult to recoup that investment.

When extreme weather hits, demand spikes significantly while supply remains relatively static, pushing the grid to its limits. This imbalance makes it hard to keep up with the surge in energy usage.

At the same time, our relationship with electricity has changed—our need for electricity has only increased. We’ve developed habits—like setting thermostats to 70 degrees or lower during summer heat waves or keeping homes balmy in winter— that, while comfortable, place additional strain on the system.

Behavioral changes, alongside investments in infrastructure, are crucial to ensuring we avoid blackouts as energy demand continues to rise in the coming years.

How the Texas grid compares to other regional grids

Is the Texas grid really in worse shape compared to other regional grids around the U.S.?

In some ways, Texas is lagging and in others, Texas is a leader.

One thing you might have heard about the Texas grid is that it is isolated, which restricts the ability to import power from neighboring regions during emergencies. Unfortunately, connecting the Texas grid further would not be a one-size fits all solution for fixing its problems. The neighboring grids would need to have excess supply at the exact moment of need and have the capacity to transmit that power to the right areas of need. Situations often arise where the Texas grid needs more power, but New Mexico, Oklahoma, Arkansas, and Louisiana have none to spare because they are experiencing similar issues with supply and demand at the same time. Furthermore, even if our neighbors have some power to share, the infrastructure may not be sufficient to deliver the power where it’s needed within the state.

On the other hand, Texas is leading the nation in terms of renewable development. The Lone Star State is #1 in wind power and #2 in solar power, only behind California. There are, of course, valid concerns about heavy reliance on renewables when the wind isn’t blowing or the sun isn’t shining, compounded by a lack of large-scale battery storage. Then, there’s the underlying cost and ecological footprint associated with the manufacturing of those batteries.

Yet, the only state with more utility-scale storage than Texas is California.

In recent years, ERCOT has pushed generators and utility companies to increase their winterization efforts, incentivize the buildout of renewables and electricity storage. You might have also heard about the Texas Electricity Fund, which represents the state’s latest effort to further incentivize grid stability. Improvements are underway, but they may not be enough if homeowners and renters across the state are unwilling to set their thermostats a bit higher during extended heatwaves.

How can we fix the Texas grid?

Here’s the reality we must face – a disaster-proof, on-demand, renewable-powered grid is extremely expensive and cannot be implemented quickly. We must come to terms with the fact that the impact of natural disasters is unavoidable, no matter how much we “upgrade” the infrastructure.

Ironically, the most impactful solution out there is free and requires only a few seconds to implement. Simple changes to human behavior are the strongest tool we have at our disposal to prevent blackouts in Texas. By decreasing our collective demand for electricity at the right times, we can all help keep the lights on and prices low.

During peak hours, the cumulative effort is as simple as turning off the lights, turning the thermostat up a few degrees, and running appliances like dishwashers and laundry machines overnight.

Another important element we cannot avoid addressing is global warming. As the temperatures on the surface of the earth increase, the weather changes, and, in many cases, it makes it more volatile.

The more fossil fuels we burn, the more greenhouse gases are released into the atmosphere. More greenhouse gases in the atmosphere leads to more volatile weather. Volatile weather, in turn, contributes to extreme grid strain in the form of heat waves, winter freezes, and hurricanes. This is no simple matter to solve, because the energy needs and capabilities of different countries differ. That is why some countries around the globe continue to expand their investments in coal as an energy source, the fossil fuel that burns the dirtiest and releases the most greenhouse gases per unit.

While governments and private organizations continue to advance carbon capture, renewable, and energy storage technology efficiency, the individual could aid these efforts by changing our behavior. There are many impactful things we can do to reduce our carbon footprint, like adjusting our thermostat a few degrees, eating less red meat, driving cars less often, and purchasing fewer single-use plastics to name a few.

If we want to see real change, we need action by all parties. The complex system of generation, transmission, and consumption all need to experience radical change, or the vicious cycle will only continue.

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Sam Luna is director at BKV Energy, where he oversees brand and go-to-market strategy, customer experience, marketing execution, and more.

This article originally ran on EnergyCapital.

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Houston researcher builds radar to make self-driving cars safer

eyes on the road

A Rice University researcher is giving autonomous vehicles an “extra set of eyes.”

Current autonomous vehicles (AVs) can have an incomplete view of their surroundings, and challenges like pedestrian movement, low-light conditions and adverse weather only compound these visibility limitations.

Kun Woo Cho, a postdoctoral researcher in the lab of Rice professor of electrical and computer engineering Ashutosh Sabharwal, has developed EyeDAR to help address such issues and enhance the vehicles’ sensing accuracy. Her research was supported in part by the National Science Foundation.

The EyeDAR is an orange-sized, low-power, millimeter-wave radar that could be placed at streetlights and intersections. Its design was inspired by that of the human eye. Researchers envision that the low-cost sensors could help ensure that AVs always pick up on emergent obstacles, even when the vehicles are not within proper range for their onboard sensors and when visibility is limited.

“Current automotive sensor systems like cameras and lidar struggle with poor visibility such as you would encounter due to rain or fog or in low-lighting conditions,” Cho said in a news release. “Radar, on the other hand, operates reliably in all weather and lighting conditions and can even see through obstacles.”

Signals from a typical radar system scatter when they encounter an obstacle. Some of the signal is reflected back to the source, but most of it is often lost. In the case of AVs, this means that "pedestrians emerging from behind large vehicles, cars creeping forward at intersections or cyclists approaching at odd angles can easily go unnoticed," according to Rice.

EyeDAR, however, works to capture lost radar reflections, determine their direction and report them back to the AV in a sequence of 0s and 1s.

“Like blinking Morse code,” Cho added. “EyeDAR is a talking sensor⎯it is a first instance of integrating radar sensing and communication functionality in a single design.”

After testing, EyeDAR was able to resolve target directions 200 times faster than conventional radar designs.

While EyeDAR currently targets risks associated with AVs, particularly in high-traffic urban areas, researchers also believe the technology behind it could complement artificial intelligence efforts and be integrated into robots, drones and wearable platforms.

“EyeDAR is an example of what I like to call ‘analog computing,’” Cho added in the release. “Over the past two decades, people have been focusing on the digital and software side of computation, and the analog, hardware side has been lagging behind. I want to explore this overlooked analog design space.”

12 winners named at CERAWeek clean tech pitch competition in Houston

top teams

Twelve teams from around the country, including several from Houston, took home top honors at this year's Energy Venture Day and Pitch Competition at CERAWeek.

The fast-paced event, held March 25, put on by Rice Alliance, Houston Energy Transition Initiative and TEX-E, invited 36 industry startups and five Texas-based student teams focused on driving efficiency and advancements in the energy transition to present 3.5-minute pitches before investors and industry partners during CERAWeek's Agora program.

The competition is a qualifying event for the Startup World Cup, where teams compete for a $1 million investment prize.

PolyJoule won in the Track C competition and was named the overall winner of the pitch event. The Boston-based company will go on to compete in the Startup World Cup held this fall in San Francisco.

PolyJoule was spun out of MIT and is developing conductive polymer battery technology for energy storage.

Rice University's Resonant Thermal Systems won the second-place prize and $15,000 in the student track, known as TEX-E. The team's STREED solution converts high-salinity water into fresh water while recovering valuable minerals.

Teams from the University of Texas won first and second place in the TEX-E competition, bringing home $25,000 and $10,000, respectively. The student winners were:

Companies that pitched in the three industry tracts competed for non-monetary awards. Here are the companies named "most-promising" by the judges:

Track A | Industrial Efficiency & Decarbonization

Track B | Advanced Manufacturing, Materials, & Other Advanced Technologies

  • First: Licube, based in Houston
  • Second: ZettaJoule, based in Houston and Maryland
  • Third: Oleo

Track C | Innovations for Traditional Energy, Electricity, & the Grid

The teams at this year's Energy Venture Day have collectively raised $707 million in funding, according to Rice. They represent six countries and 12 states. See the full list of companies and investor groups that participated here.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.