Eight Houston-area energy employers ranked on StartupBlink's new Corporate Startup Activity Index 2025. Photo via Getty Images
Eight major players in Houston’s energy industry rank among the world’s top 20 energy companies for corporate startup activity.
The inaugural Corporate Startup Activity Index 2025, published by StartupBlink, ranks global corporations by industry. The eight Houston-area employers fall into the index’s energy and environment category.
Researchers from StartupBlink, an innovation research platform, scored more than 370 companies based on three factors: corporate involvement in startup activity, startup success and ecosystem integration.
The eight Houston-area energy employers that landed in the energy and environment category’s top 20 are:
No. 3 BP. Score: 13.547. U.S. headquarters in Houston.
No. 5 Saudi Aramco. Score: 7.405. Americas headquarters in Houston.
No. 7 Eni. Score: 6.255. Headquarters of Eni U.S. Operating Co. in Houston.
No. 8 Shell. Score: 6.217. U.S. headquarters in Houston.
No. 11 Occidental Petroleum. Score: 5.347. Global headquarters in Houston.
No. 15 Engie. Score: 3.352. North American headquarters in Houston.
No. 17 Repsol. Score: 2.980. U.S. headquarters for oil and gas operations in The Woodlands.
No. 19 Chevron. Score: 2.017. Global headquarters in Houston.
“Building a startup is hard, and navigating corporate innovation can be just as complex. This ranking is a step toward making the connection between startups and corporations more transparent, enabling startups and corporations to collaborate more effectively for mutual success,” said Eli David Rokah, CEO of StartupBlink.
Salesforce topped the global index with a score of 380.090, followed by Intel, Google, Qualcomm, and Comcast.
Utility Global’s technology enables reduction of greenhouse gas emissions along with generation of low-carbon fuels and chemicals. Photo courtesy of Utility Global
Houston-based Utility Global, a maker of decarbonization-focused gas production technology, has raised $53 million in an ongoing series C round.
Among the participants in the round are Canada’s Ontario Power Generation Pension Plan, the XCarb Innovation Fund operated by Luxembourg-based steel company ArcelorMittal, Houston-based investment firm Ara Partners, and Saudi Aramco’s investment arm.
Also, Utility Global and ArcelorMittal have agreed to develop at least one decarbonization facility at an ArcelorMittal steel plant.
The latest infusion of cash will support the rollout of Utility Global’s eXERO technology, including establishment of the company’s first commercial facilities in 2026.
“With the successful completion of its demonstration program at a commercial steel facility resulting in the first hydrogen ever produced from blast furnace off-gasses in a single reactor, the company has shifted to commercial deployments,” Utility Global says in a news release.
Utility Global’s technology enables reduction of greenhouse gas emissions along with generation of low-carbon fuels and chemicals.
“Our eXERO solution is the first of its kind to convert process gasses into clean hydrogen in a single reactor, onsite, in a cost-effective manner that extends the life of existing customer assets and processes while providing significant emissions reductions,” says Claus Nussgruber, CEO of Utility Global.
Fourteen businesses with global or regional headquarters in the Houston area appear on Fortune’s new list of the world’s 500 biggest companies.
Oil and gas company Saudi Aramco, whose headquarters for the Americas is in Houston, leads the Houston-area pack. With annual revenue of $494.9 billion, it lands at No. 4 on the Fortune Global 500. Ahead of Saudi Aramco are U.S. retailers Walmart and Amazon, and Chinese electric company State Grid.
To put Saudi Aramco’s annual revenue in perspective, the total is slightly above the gross domestic product for the Philippines.
For the third year in a row, Saudi Aramco stands out as the most profitable member of the Fortune Global 500. The company racked up $121 billion in profit last year.
Overall, Saudi Aramco and 32 other petroleum refiners — many of them with a significant presence in the Houston area — made the Fortune Global 500.
“The Global 500 is the ultimate scorecard for business success. The aggregate revenue of the Fortune Global 500 in 2023 reached $41 trillion, a record level. That sum represents more than a third of global GDP — a sign of how much economic power is concentrated in these companies,” Scott DeCarlo, Fortune’s vice president of research, says in a news release.
Here’s the rundown of Fortune Global 500 companies with global or regional headquarters in the Houston area, including the ranking and annual revenue for each:
Saudi Aramco, No. 4, $494.9 billion, Americas headquarters in Houston
ExxonMobil, No. 12, $344.6 billion, global headquarters in Spring
Shell, No. 13, $323.2 billion; U.S. headquarters in Houston
TotalEnergies, No. 23, $218.9 billion, U.S. headquarters in Houston
BP, No. 25, $213 billion, U.S. headquarters in Houston
Five companies with strong ties to Houston have been named among this year’s 100 most influential companies by Time magazine.
The five companies are:
South Korea’s Hanwha Group, whose Hanwha Power Systems Americas subsidiary is in Houston. Hanwha, known as the “Lockheed Martin of Asia,” was praised for winning approval last year from the American Bureau of Shipping for the world’s first large-scale, carbon-free liquefied natural gas (LNG) vessel.
Saudi Aramco, whose Americas headquarters is in Houston. Time cited Saudi Aramco’s dominance in the global oil market as a $1.9 billion “giant.”
Germany-based ThyssenKrupp Nucera, whose U.S. headquarters is in Houston. The company builds alkaline water electrolyzers to power steel mills and other fossil-fuel-dependent industrial sites.
United Airlines, which operates a hub at George Bush Intercontinental Airport. Chicago-based United was lauded for funding startups that help produce sustainable aviation fuel.
To come up with the fourth annual list, Time solicited nominations and polled in-house contributors and correspondents, along with external experts. Editors at Time then evaluated each company based on factors such as impact, innovation, ambition, and success.
“The result is a diverse group of 100 businesses helping chart an essential path forward,” the magazine says.
In a news release, Time’s editor in chief, Sam Jacobs, says the list of 100 companies “is more than an index of business success.”
“It is an argument for what business influence looks like in 2024,” Jacobs adds. “At a time when leadership in other sectors is battered, surveys suggest that many look to corporate leaders first for direction …. Each show us how companies can provide new models and new inspiration for the future of humanity.”
A new ranking looks at the Houston companies with the most patents granted in 2022. Photo via Getty Images
Two major players in Houston’s energy industry are also major players in the patent arena.
A new ranking from the analytics arm of patent law firm Harrity & Harrity puts Saudi Aramco, whose North American headquarters is in Houston, and Halliburton, whose global headquarters is in Houston, puts them in a tie for the number of U.S. patents with 963 patents received in 2022. Saudi Aramco and Halliburton now share the title of Houston’s patent king.
Saudi Aramco saw a 12 percent rise in patents granted in 2022 compared with 2021, according to Harrity & Harrity’s Patent 300 report, while Halliburton experienced a 5 percent jump. Each company tied for 44th place among the top 300 U.S. patient recipients in 2022.
According to the report, Samsung Electronics (8,513 patents) knocked IBM off its longtime pedestal as the No. 1 recipient of U.S. patents. IBM (4,743 patents) now holds the No. 2 position.
Many of Aramco’s U.S. patents come from its R&D centers in Houston, Boston, and Detroit. The Houston R&D hub opened in 2014 and underwent an expansion three years later.
Aramco, a Saudi Arabia-based supplier of oil and natural gas, also generates patents through academic partnerships, such as the one it established last year with Rice University’s Carbon Hub. Aramco has committed $10 million over five years to the carbon initiative.
“While patents are a leading indicator of innovation, the ultimate goal is to create value through the development of solutions that help to address a particular need,” Aramco says. “Such results are often only possible with significant upfront investments, and patents make it possible to recoup these costs and potentially generate additional revenue through commercialization.”
Last year, Aramco boasted that it ranked first in the oil and gas industry for U.S. patents (864) granted in 2021. Until 2011, Aramco had received only 100 U.S. patents over a 78-year span.
“Many of the patents are for innovations Aramco uses itself for competitive advantage, although they can also be licensed to others, creating extra value for the company,” Jamil Bagawi, then the company’s chief engineer, wrote in 2021.
According to Houston law firm Yetter Coleman, those efforts kicked into high gear after Halliburton lost a fracking patent lawsuit to Tomball-based BJ Services, which is now out of business. In 2003, a Houston jury awarded $98 million in damages to BJ in the case, and Halliburton had to stop selling the system that allegedly infringed on BJ’s patent.
In the five years before the verdict, Halliburton averaged 142 patent awards a year, according to Yetter Coleman. The law firm reported in 2013 that Halliburton subsequently averaged 234 patents a year.
Today, of course, Halliburton has far exceeded those numbers. And it vigorously defends its growing patent portfolio. In September 2022, for instance, three subsidiaries of the oilfield services giant filed two lawsuits against Houston-based rival U.S. Well Services alleging infringement of 14 Halliburton patents.
IAM, a website that reports about the intellectual property industry, noted that when Halliburton sued U.S. Well Services, “IP professionals in the oil and gas industry may well have reached for the popcorn. Battles of this magnitude rarely break out in their slice of the patent world.”
Halliburton and Aramco may be the goliaths in Houston’s patent world, but they’re not the only local organizations to appear on the Patent 300 list for 2022. Other Houston-area companies that made the cut are:
Spring-based Hewlett Packard Enterprise, No. 84. The tech company received 511 U.S. patents in 2022, down 4 percent from the previous year.
Houston-based SLB (Schlumberger), No. 117. The oilfield services company received 372 U.S. patents in 2022, down 14 percent from the previous year.
Houston-based Baker Hughes, No. 123. The oilfield services company received 350 U.S. patents in 2022, down 11 percent from the previous year.
ExxonMobil, No. 156. The oil and gas company received 281 U.S. patents in 2022, down 8 percent from the previous year. It is in the process of moving its headquarters from Irving to Spring.
United Imaging Healthcare, No. 253. The Chinese healthcare equipment company, whose North American headquarters is in Houston, received 175 U.S. patents in 2022, up 31 percent from the previous year.
Jim Sledzik joins the Houston Innovators Podcast to discuss corporate venture, Houston's role in the energy transition, and more. Photo courtesy of Aramco
When it comes to Houston's potential to lead the energy transition, Jim Sledzik, North American managing director of Saudi Aramco Energy Ventures, says it's a no-brainer.
"We understand the energy business — we understand size and scale. And the size and scale of the challenges in front of us to get to net zero is enormous,” he says on this week's episode of the Houston Innovators podcast. “The basics are here. We just need to tap into the talent and experience."
Over the past decade, Saudi Aramco Energy Ventures has invested $320 million into 33 portfolio companies in the United States. Sledzik, who's worked in various energy services roles around the world before entering in to investment, explains that the corporate venture model is ideal for scaling big technology — and fast.
“When you’re using the venture model in a corporate setting, you have the company and the balance sheet behind you, which brings different benefits to companies you’re investing in,” he says. “These entrepreneurs who are looking to figure out how to deploy technology at scale becomes the real interesting item. All entrepreneurs want to grow — and they want to grow fast."
Scaling fast is risky, but big corporates — like Aramco — can help address the risks by providing a foothold in the market, a place to roll out the technology, and more.
“With corporate venture, you can bring the assets and the application of those technologies, and you can work to scale it in a manner that’s somewhat derisked,” Sledzik says on the show. “In corporate venture capital, you have other levers in which to pull to add value to the entrepreneurs you’re investing in. The private side brings different values.”
Earlier this year, Aramco announced a partnership with the Ion, representing its dedication to the Houston innovation ecosystem. Sledzik says Aramco being named a founding partner at the Ion opens the door to more collisions with Houston entrepreneurs. Starting later this month, Sledzik and his team will host office hours every other Friday.
"Ion is the place where you can find those collisions,” he says. “You just never know when serendipity is going to be created.”
He shares more about the types of technology Aramco is looking for and his advice to energy tech entrepreneurs on the podcast. Listen to the interview below — or wherever you stream your podcasts — and subscribe for weekly episodes.
Affluent Houston neighbor Bellaire is cashing in as the richest small town in Texas for 2025, according to new study from GoBankingRates.
The report, "The Richest Small Town in Every State," used data from the U.S. Census Bureau's American Community Survey to determine the 50 richest small towns in America based on their median household income.
Of course, Houstonians realize that describing Bellaire as a "small town" is a bit of misnomer. Located less than 10 miles from downtown and fully surrounded by the City of Houston, Bellaire is a wealthy enclave that boasts a population of just over 17,000 residents. These affluent citizens earn a median $236,311 in income every year, which GoBankingRates says is the 11th highest household median income out of all 50 cities included in the report.
The average home in this city is worth over $1.12 million, but Bellaire's lavish residential reputation often attracts properties with multimillion-dollar price tags.
Bellaire also earned a shining 81 livability score for its top quality schools, health and safety, commute times, and more. The livability index, provided by Toronto, Canada-based data analytics and real estate platform AreaVibes, said Bellaire has "an abundance of exceptional local amenities."
"Among these are conveniently located grocery stores, charming coffee shops, diverse dining options and plenty of spacious parks," AreaVibes said. "These local amenities contribute significantly to its overall appeal, ensuring that [residents'] daily needs are met and offering ample opportunities for leisure and recreation."
Earlier in 2025, GoBankingRates ranked Bellaire as the No. 23 wealthiest suburb in America, and it's no stranger to being named on similar lists comparing the richest American cities.
Corrosion is not something most people think about, but for Houston's industrial backbone pipelines, refineries, chemical plants, and water infrastructure, it is a silent and costly threat. Replacing damaged steel and overusing chemicals adds hundreds of millions of tons of carbon emissions every year. Despite the scale of the problem, corrosion detection has barely changed in decades.
In a recent episode of the Energy Tech Startups Podcast, Anwar Sadek, founder and CEO of Corrolytics, explained why the traditional approach is not working and how his team is delivering real-time visibility into one of the most overlooked challenges in the energy transition.
From Lab Insight to Industrial Breakthrough
Anwar began as a researcher studying how metals degrade and how microbes accelerate corrosion. He quickly noticed a major gap. Companies could detect the presence of microorganisms, but they could not tell whether those microbes were actually causing corrosion or how quickly the damage was happening. Most tests required shipping samples to a lab and waiting months for results, long after conditions inside the asset had changed.
That gap inspired Corrolytics' breakthrough. The company developed a portable, real-time electrochemical test that measures microbial corrosion activity directly from fluid samples. No invasive probes. No complex lab work. Just the immediate data operators can act on.
“It is like switching from film to digital photography,” Anwar says. “What used to take months now takes a couple of hours.”
Why Corrosion Matters in Houston's Energy Transition
Houston's energy transition is a blend of innovation and practicality. While the world builds new low-carbon systems, the region still depends on existing industrial infrastructure. Keeping those assets safe, efficient, and emission-conscious is essential.
This is where Corrolytics fits in. Every leak prevented, every pipeline protected, and every unnecessary gallon of biocide avoided reduces emissions and improves operational safety. The company is already seeing interest across oil and gas, petrochemicals, water and wastewater treatment, HVAC, industrial cooling, and biofuels. If fluids move through metal, microbial corrosion can occur, and Corrolytics can detect it.
Because microbes evolve quickly, slow testing methods simply cannot keep up. “By the time a company gets lab results, the environment has changed completely,” Anwar explains. “You cannot manage what you cannot measure.”
A Scientist Steps Into the CEO Role
Anwar did not plan to become a CEO. But through the National Science Foundation's ICorps program, he interviewed more than 300 industry stakeholders. Over 95 percent cited microbial corrosion as a major issue with no effective tool to address it. That validation pushed him to transform his research into a product.
Since then, Corrolytics has moved from prototype to real-world pilots in Brazil and Houston, with early partners already using the technology and some preparing to invest. Along the way, Anwar learned to lead teams, speak the language of industry, and guide the company through challenges. “When things go wrong, and they do, it is the CEO's job to steady the team,” he says.
Why Houston
Relocating to Houston accelerated everything. Customers, partners, advisors, and manufacturing talent are all here. For industrial and energy tech startups, Houston offers an ecosystem built for scale.
What's Next
Corrolytics is preparing for broader pilots, commercial partnerships, and team growth as it continues its fundraising efforts. For anyone focused on asset integrity, emissions reduction, or industrial innovation, this is a company to watch.
Energy Tech Startups Podcast is hosted by Jason Ethier and Nada Ahmed. It delves into Houston's pivotal role in the energy transition, spotlighting entrepreneurs and industry leaders shaping a low-carbon future.
Fifty-one scientists and professors from Houston-area universities and institutions were named among the most cited in the world for their research in medicine, materials sciences and an array of other fields.
The Clarivate Highly Cited Researchers considers researchers who have authored multiple "Highly Cited Papers" that rank in the top 1percent by citations for their fields in the Web of Science Core Collection. The final list is then determined by other quantitative and qualitative measures by Clarivate's judges to recognize "researchers whose exceptional and community-wide contributions shape the future of science, technology and academia globally."
This year, 6,868 individual researchers from 60 different countries were named to the list. About 38 percent of the researchers are based in the U.S., with China following in second place at about 20 percent.
However, the Chinese Academy of Sciences brought in the most entries, with 258 researchers recognized. Harvard University with 170 researchers and Stanford University with 141 rounded out the top 3.
Looking more locally, the University of Texas at Austin landed among the top 50 institutions for the first time this year, tying for 46th place with the Mayo Clinic and University of Minnesota Twin Cities, each with 27 researchers recognized.
Houston once again had a strong showing on the list, with MD Anderson leading the pack. Below is a list of the Houston-area highly cited researchers and their fields.
UT MD Anderson Cancer Center
Ajani Jaffer (Cross-Field)
James P. Allison (Cross-Field)
Maria E. Cabanillas (Cross-Field)
Boyi Gan (Molecular Biology and Genetics)
Maura L. Gillison (Cross-Field)
David Hong (Cross-Field)
Scott E. Kopetz (Clinical Medicine)
Pranavi Koppula (Cross-Field)
Guang Lei (Cross-Field)
Sattva S. Neelapu (Cross-Field)
Padmanee Sharma (Molecular Biology and Genetics)
Vivek Subbiah (Clinical Medicine)
Jennifer A. Wargo (Molecular Biology and Genetics)
William G. Wierda (Clinical Medicine)
Ignacio I. Wistuba (Clinical Medicine)
Yilei Zhang (Cross-Field)
Li Zhuang (Cross-Field)
Rice University
Pulickel M. Ajayan (Materials Science)
Pedro J. J. Alvarez (Environment and Ecology)
Neva C. Durand (Cross-Field)
Menachem Elimelech (Chemistry and Environment and Ecology)
