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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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A forecast from Energy Innovation Policy & Technology shows that Texas is expected to see a decline in solar, wind and battery-powered storage by 2035 due to clean energy tax credit repeals in the 'One Big Beautiful Bill Act.' Photo via Getty Images.

New forecast shows impact of 'Big Beautiful Bill' on Texas clean energy generation

energy forecast

Texas is expected to see a 77-gigawatt decrease in power generation capacity within the next 10 years under the federal "One Big Beautiful Bill Act," which President Trump recently signed into law, a new forecast shows.

Primarily due to the act’s repeal of some clean energy tax credits, a forecast, published by energy policy research organization Energy Innovation Policy & Technology, predicts that Texas is expected to experience a:

  • 54-gigawatt decline in capacity from solar power by 2035
  • 23-gigawatt decline in capacity from wind power by 2035
  • 3.1-gigawatt decline in capacity from battery-stored power by 2035
  • 2.5-gigawatt increase in capacity from natural gas by 2035

The legislation “will reduce additions of new, cost-effective electricity capacity in Texas, raising power prices for consumers and decreasing the state’s GDP and job growth in the coming years,” the forecast says.

The forecast also reports that the loss of sources of low-cost renewable energy and the resulting hike in natural gas prices could bump up electric bills in Texas. The forecast envisions a 23 percent to 54 percent hike in electric rates for residential, commercial and industrial customers in Texas.

Household energy bills are expected to increase by $220 per year by 2030 and by $480 per year by 2035, according to the forecast.

Energy Innovation Policy & Technology expects job growth and economic growth to also take a hit under the "Big Beautiful Bill."

The nonprofit organization foresees annual losses of $5.9 billion in Texas economic output (as measured by GDP) by 2030 and $10 billion by 2035. In tandem with the impact on GDP, Texas is projected to lose 42,000 jobs by 2030 and 94,000 jobs by 2035 due to the law’s provisions, according to the organization.

The White House believes the "Big Beautiful Bill" will promote, not harm, U.S. energy production. The law encourages the growth of traditional sources of power such as oil, natural gas, coal and hydropower.

“The One Big Beautiful Bill Act is a historic piece of legislation that will restore energy independence and make life more affordable for American families by reversing disastrous Biden-era policies that constricted domestic energy production,” Interior Secretary Doug Burgum said in a news release.

Promoters of renewable energy offer an opposing viewpoint.

“The bill makes steep cuts to solar energy and places new restrictions on energy tax credits that will slow the deployment of residential and utility-scale solar while undermining the growth of U.S. manufacturing,” says the Solar Energy Industries Association.

Jason Grumet, CEO of the American Clean Power Association, complained that the legislation limits energy production, boosts prices for U.S. businesses and families, and jeopardizes the reliability of the country’s power grid.

“Our economic and national security requires that we support all forms of American energy,” Grumet said in a statement. “It is time for the brawlers to get out of the way and let the builders get back to work.”

PJ Popovic, founder and CEO of Houston-based Rhythm Energy, which has acquired Inspire Clean Energy. Photo courtesy of Rhythm

Houston's Rhythm Energy expands nationally with clean power acquisition

power deal

Houston-based Rhythm Energy Inc. has acquired Inspire Clean Energy for an undisclosed amount. The deal allows Rhythm to immediately scale outside of Texas and into the Northeast, Midwest and mid-Atlantic regions, according to a release from the company.

Inspire offers subscription-based renewable electricity plans to customers in Pennsylvania, New York, New Jersey, Massachusetts, Ohio, Delaware, Illinois, Maryland, and Washington, D.C. By combining forces, Rhythm will now be one of the largest independent green-energy retailers in the country.

“Adding Inspire to the Rhythm family gives us the geographic reach to serve millions of new customers with the highly rated customer experience Texans already enjoy,” PJ Popovic, CEO of Rhythm, said in the release. “Together we become one of the largest independent green-energy retailers in the country and can roll out innovations like our PowerShift Time-of-Use plan and device-enabled demand-response programs that put customers fully in control of their energy costs.”

Rhythm was founded by Popovic in 2020 and offers 100 percent renewable energy plans using solar power, wind power and other renewable power sources.

In addition to scaling geographically, the acquisition will "(marry) Rhythm's data-driven technology with Inspire's successful subscription model." Rhythm also plans to upgrade its digital tools and provide more advanced services to help lower clean energy costs, according to the release.

Popovic spoke with EnergyCapital in 2023 about where he thinks renewables fit into Texas’s energy consumption. Read more here.

Engie will supply up to 300 megawatts of wind power to New York-based Cipher Mining, which develops and operates large data centers for cryptocurrency mining. Photo via Getty Images.

Engie signs deal to supply wind power for Texas data center

wind deal

Houston-based Engie North America, which specializes in generating low-carbon power, has sealed a preliminary deal to supply wind power to a Cipher Mining data center in Texas.

Under the tentative agreement, Cipher could buy as much as 300 megawatts of clean energy from one of Engie’s wind projects. The financial terms of the deal weren’t disclosed.

Cipher Mining develops and operates large data centers for cryptocurrency mining and high-performance computing.

In November, New York City-based Cipher said it bought a 250-acre site in West Texas for a data center with up to 100 megawatts of capacity. Cipher paid $4.1 million for the property.

“By pairing the data center with renewable energy, this strategic collaboration supports the use of surplus energy during periods of excess generation, while enhancing grid stability and reliability,” Engie said in a news release about the Cipher agreement.

The Engie-Cipher deal comes amid the need for more power in Texas due to several factors. The U.S. Energy Information Administration reported in October that data centers and cryptocurrency mining are driving up demand for power in the Lone Star State. Population growth is also putting pressure on the state’s energy supply.

Last year, Engie added 4.2 gigawatts of renewable energy capacity worldwide, bringing the total capacity to 46 gigawatts as of December 31. Also last year, Engie signed a new contract with Meta (Facebook's owner) and expanded its partnership with Google in the U.S. and Belgium.
Competing virtually against 145 teams from 34 countries, the students, known as The Dream Team, won third place for their plan to address energy poverty in Egypt and Turkey. Photo courtesy of UH

Houston university students earn top honors at global energy-poverty competition

dream team

A student-led team from the University of Houston and Texas A&M University took home top prizes at last month's Switch Energy Alliance Case Competition.

Competing virtually against 145 teams from 34 countries, the students, known as The Dream Team, won third place for their plan to address energy poverty in Egypt and Turkey. They were awarded $5,000 in prize money.

The competition challenges student teams to solve real-world energy problems to "drive progress towards a sustainable and equitable energy future," according to the Switch competition's website.

“The Switch competition tackles major issues that we often don’t think about on a daily basis in the United States, so it is a really interesting and tough challenge to solve,” Sarah Grace Kimberly, a senior finance major at UH and member of the team, said in a statement from the university

Kimberly was joined by Pranjal Sheth, a fellow senior finance major at UH, and Nathan Hazlett, a finance graduate student at TAMU with a bachelor’s degree in petroleum engineering.

The Dream Team developed a 10-year plan to address Egypt and Turkey's energy poverty that would create 200,000 jobs, reduce energy costs and improve energy access in rural areas. Its major components included:

  • Developing rooftop and utility-scale solar farms and solar canopies over irrigation canals
  • Expanding wind power capacity by taking advantage of high wind speeds in the Gulf of Suez and Western Desert
  • Deploying cost-efficient technologies along the Nile for rural electrification

“People in the United States should be extremely thankful for the infrastructure and systems that allow us to thrive with power, food and water,” Sheth said in the statement. “Texas went through Winter Storm Uri in 2021—people were without electricity for weeks, and lives were lost. It still comes up in conversations, but certain regions of the world, developing nations, live that experience almost every day. We need to make that a larger part of the conversation and work to help them.”

Team Quwa, a team of four students from the University of Texas at Austin, took home second place and $7,000 in prize money.

“This journey was both intellectually enriching and personally fulfilling,” Mohamed Awad, a PhD candidate at the Hildebrand Department of Petroleum and Geosystems Engineering, said in a statement from UT. “Through the case competition, we had an opportunity to contribute meaningful ideas to address a critical global issue.”

Team Energy Nexus from India earned the top prize and took home $10,000, according to a release from Switch.

Switch Energy Alliance is an Austin-based non-profit that's focused on energy education. The Switch competition began in 2020. Teams of three to four students create a presentation and 15-minute video. The top five teams present their case studies live and answer questions before a panel of judges.

More than 3,200 students from 55 countries have competed over the years. Click here to watch the 2024 final round.

Texas gets a gold star when it comes to projected wind power capacity. Photo via Getty Images

Texas ranks among the leading states for projected wind power capacity

We're No. 1

A new report ranks Texas in the top three states that are blowing away nationwide wind power capacity projections.

Texas, Wyoming, and Iowa are standing out in terms of wind power capacity, according to a report from Texas Real Estate Source, a Texas real estate, travel, and lifestyle website, that analyzed all 50 states and ranked them by total projected capacity, capacity per capita, and capacity per square mile.

Nationwide wind power capacity is projected to grow exponentially in the coming years, with Texas, Wyoming, and Iowa leading the charge. With 44,974 megawatts of projected wind power capacity, Texas leads the country in terms of volume. Wyoming, meanwhile, leads the nation in projected wind power capacity per capita with 6,679 MW serving a population of 581,381, and Iowa takes first place in projected wind power capacity per square mile.

"As renewable energy continues to command center-stage attention and massive financial investment, wind power has proven to be an indispensable tool in the clean energy toolbox," reads the report.

In its top spot, Texas' projected wind power capacity is more than triple the capacity of second place, Oklahoma, but the Lone Star State falls to ninth place in the ranking of capacity per capita with 1.5 kilowatts.

“It’s no surprise to see Texas significantly outpacing the nation in installed and projected wind power capacity," says a spokesperson from Texas Real Estate Source. "The combination of boundless land, favorable wind patterns, and highly-respected research institutions has made it the perfect place for wind power adoption. It’s revealing, however, to see the per capita and per square mile rankings: they give us a more complete picture of which states are at the forefront of wind power development.”

A few other states to take note of in the report are California and Arkansas. California ranks No. 7 when it comes to total projected wind power capacity but only is No. 24 in the per capita ranking. And, considering the state has only 104 MW currently under construction, California doesn't seem to be keeping up with its population.

Arkansas, meanwhile, has 180 MW currently under construction — previously having a projected zero MW of wind power capacity. Once this is done, Arkansas will outperform 17 other states.

When it comes to wind power jobs, the Lone Star State is making some moves on that front too, according to another report. The SmartAsset study found that 2.23 percent of workers in the Houston area hold down jobs classified as “green.” Per the Department of Energy, Texas tallied almost 25,500 wind energy jobs in 2021.

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DOE proposes cutting $1.2 billion in funding for hydrogen hub

funding cuts

The U.S. Department of Energy has proposed cutting $1.2 billion in funding for the HyVelocity Gulf Coast Hydrogen Hub, a clean energy project backed by AES, Air Liquide, Chevron, ExxonMobil, Mitsubishi Power Americas and Ørsted.

The HyVelocity project, which would produce clean hydrogen, appears on a new list of proposed DOE funding cancellations. The list was obtained by Latitude Media.

As of November, HyVelocity had already received $22 million of the potential $1.2 billion in DOE funding.

Other than the six main corporate backers, supporters of HyVelocity include the Center for Houston’s Future, Houston Advanced Research Center, Port Houston, University of Texas at Austin, Shell, the Texas governor’s office, Texas congressional delegation, and the City of Fort Worth.

Kristine Cone, a spokeswoman for GTI Energy, the hub’s administrator, told EnergyCapital that it hadn’t gotten an update from DOE about the hub’s status.

The list also shows the Magnolia Sequestration Hub in Louisiana, being developed by Occidental Petroleum subsidiary 1PointFive, could lose nearly $19.8 million in federal funding and the subsidiary’s South Texas Direct Air Capture (DAC) Hub on the King Ranch in Kleberg County could lose $50 million. In September, 1Point5 announced the $50 million award for its South Texas hub would be the first installment of up to $500 million in federal funding for the project.

Other possible DOE funding losses for Houston-area companies on the list include:

  • A little over $100 million earmarked for Houston-based BP Carbon Solutions to develop carbon storage projects
  • $100 million earmarked for Dow to produce battery-grade solvents for lithium-ion batteries. Dow operates chemical plants in Deer Park and LaPorte
  • $39 million earmarked for Daikin Comfort Technologies North America to produce energy-efficient heat pumps. The HVAC company operates the Daikin Texas Technology Park in Waller
  • Nearly $6 million earmarked for Houston-based Baker Hughes Energy Transition to reduce methane emissions from flares
  • $3 million earmarked for Spring-based Chevron to explore development of a DAC hub in Northern California
  • Nearly $2.9 million earmarked for Houston-based geothermal energy startup Fervo Energy’s geothermal plant in Utah

Houston ranks No. 99 out of 100 on new report of greenest U.S. cities

Sustainability Slide

Houstonians may be feeling blue about a new ranking of the greenest cities in the U.S.

Among the country’s 100 largest cities based on population, Houston ranks 99th across 28 key indicators of “green” living in a new study from personal finance website WalletHub. The only city with a lower ranking is Glendale, Arizona. Last year, Houston landed at No. 98 on the WalletHub list.

“‘Green’ living means a choice to engage in cleaner, more sustainable habits in order to preserve the planet as much as possible,” WalletHub says.

Among the study’s ranking factors are the amount of greenhouse gas emissions per capita, the number of “smart energy” policies, and the presence of “green job” programs.

In the study, Houston received an overall score of 35.64 out of 100. WalletHub put its findings into four buckets, with Houston ranked 100th in the environment and transportation categories, 56th in the lifestyle and policy category, and 52nd in the energy sources category.

In the environment category, Houston has two big strikes against it. The metro area ranks among the 10 worst places for ozone pollution (No. 7) and year-round particle pollution (No. 8), according to the American Lung Association’s 2025 list of the most polluted cities.

In the WalletHub study, San Jose, California, earns the honor of being the country’s greenest city. It’s followed by Washington, D.C.; Oakland, California; Irvine, California; and San Francisco.

“There are plenty of things that individuals can do to adopt a green lifestyle, from recycling to sharing rides to installing solar panels on their homes,” WalletHub analyst Chip Lupo said in the report. “However, living in one of the greenest cities can make it even easier to care for the environment, due to sustainable laws and policies, access to locally grown produce, and infrastructure that allows residents to use vehicles less often. The greenest cities also are better for your health due to superior air and water quality.”

Leader tapped for Texas 'nuclear renaissance' and more energy news to know

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Editor's note: The top energy transition stories for the start of October include Texas' big bet on nuclear energy, ERCOT's innovative efforts, CenterPoint's capital improvement plan, and more. Read on for the five most-read EnergyCapitalHTX stories published Oct.1-15, 2025:


1. Policy adviser tapped to lead ‘nuclear renaissance’ in Texas

Jarred Shaffer has been named director of the new Texas Advanced Nuclear Energy Office. Photo via LinkedIn.

As Texas places a $350 million bet on nuclear energy, a budget and policy adviser for Gov. Greg Abbott has been tapped to head the newly created Texas Advanced Nuclear Energy Office. Jarred Shaffer is now director of the nuclear energy office, which administers the $350 million Texas Advanced Nuclear Development Fund. The fund will distribute grants earmarked for the development of more nuclear reactors in Texas. Continue reading.

2. ERCOT steps up grid innovation efforts to support growing power demand

ERCOT has launched its new Grid Research, Innovation, and Transformation (GRIT) initiative to help resolve grid challenges and meet growing demand. Photo via Getty Images

As AI data centers gobble up more electricity, the Electric Reliability Council of Texas (ERCOT) — whose grid supplies power to 90 percent of Texas — has launched an initiative to help meet challenges presented by an increasingly strained power grid. ERCOT, based in the Austin suburb of Taylor, said its new Grid Research, Innovation, and Transformation (GRIT) initiative will tackle research and prototyping of emerging technology and concepts to “deeply understand the implications of rapid grid and technology evolution, positioning ERCOT to lead in the future energy landscape.” Continue reading.

3. CenterPoint launches $65B capital improvement plan

CenterPoint Energy has launched a $65 million capital improvement plan that will focus on building and maintaining a “resilient” electric grid. Photo via centerpointenergy.com

To support rising demand for power, Houston-based utility company CenterPoint Energy has launched a $65 billion, 10-year capital improvement plan. CenterPoint said that in its four-state service territory — Texas, Indiana, Minnesota and Ohio — the money will go toward building and maintaining a “resilient” electric grid and a safe natural gas system. Continue reading.

4. UH projects propose innovative reuse of wind turbines and more on Gulf Coast

The Houston projects involve the innovative reuse of oil rig platforms and wind turbines. Courtesy rendering

Two University of Houston science projects have been selected as finalists for the Gulf Futures Challenge, which will award a total of $50 million to develop ideas that help benefit the Gulf Coast. Sponsored by the National Academies of Science, Engineering and Medicine’s Gulf Coast Research Program and Lever for Change, the competition is designed to spark innovation around problems in the Gulf Coast, such as rising sea levels, pollution, energy security, and community resiliency. The two UH projects beat out 162 entries from organizations based in Alabama, Florida, Louisiana, Mississippi, and Texas. Continue reading.

5. Energy startup Base Power raises $1 billion series C round

Base Power, founded by Justin Lopas and Zach Dell, has closed one of the largest venture capital deals of the year. Photo courtesy Base Power.

Austin-based startup Base Power, which offers battery-supported energy in the Houston area and other regions, has raised $1 billion in series C funding—making it one of the largest venture capital deals this year in the U.S. Continue reading.

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