8 Houston energy giants top global corporate startup index for 2025

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Eight Houston energy leaders appear on the global startup index. 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.

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This article originally appeared on InnovationMap.com.

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1PointFive secures new buyer for Texas CO2 removal project

seeing green

Houston’s Occidental Petroleum Corp., or Oxy, and its subsidiary 1PointFive have secured another carbon removal credit deal for its $1.3 billion direct air capture (DAC) project, Stratos.

California-based Palo Alto Networks has agreed to purchase 10,000 tons of carbon dioxide removal (CDR) credits over five years from the project, according to a news release.

The company joins others like Microsoft, Amazon, AT&T, Airbus, the Houston Astros and the Houston Texans that have agreed to buy CDR credits from 1Point5.

"Collaborating with 1PointFive in this carbon removal credit agreement highlights our proactive approach toward exploring innovative solutions for a greener future,” BJ Jenkins, president of Palo Alto Networks, said in the release.

The Texas-based Stratos project is slated to come online this year near Odessa. It's being developed through a joint venture with investment manager BlackRock and is designed to capture up to 500,000 metric tons of CO2 per year. The U.S Environmental Protection Agency recently approved Class VI permits for the project.

DAC technology pulls CO2 from the air at any location, not just where carbon dioxide is emitted. Under the agreement with Palo Alto Networks and others, the carbon dioxide that underlies the credits will be stored in a below-the-surface saline aquifer and won’t be used to produce oil or gas.

“We look forward to collaborating with Palo Alto Networks and using Direct Air Capture to help advance their sustainability strategy,” Michael Avery, president and general manager of 1PointFive, said in the release. “This agreement continues to build momentum for high-integrity carbon removal while furthering DAC technology to support energy development in the United States.”

Chevron ranks among America's best places to work. Photo courtesy of Chevron

4 Houston energy companies named best places to work by U.S. News

Where to Work

Nearly a dozen public and private Houston-based companies have been hailed among the best places to work in 2025 by U.S. News and World Report, with four from the energy sector.

The annual "U.S. News Best Companies to Work For" report examines thousands of publicly-traded companies around the world to determine the best employers based on six metrics including work-life balance and flexibility; quality of pay and benefits; job and company stability; career opportunities and professional development; and more. The companies were not ranked, but included based on reader surveys and publicly available data about each workplace.

New for the 2025-2026 ratings, U.S. News expanded its methodology to include privately owned companies and companies with internship opportunities for recent graduates and new, current, and prospective students. Companies were also grouped into job-specific and industry-specific lists, and the publication also added a new list highlighting "employers that are particularly friendly to employees who are also caregivers in their personal lives."

U.S. News included seven publicly-traded companies and four privately owned companies in Houston on the lists.

Houston-based energy companies on the list

It may not come as a surprise that oil and gas corporation Chevron landed at the top of the list of top public employers in the Energy Capital of the World. The energy giant currently employs more than 45,000 people, earns $193.47 billion in annual revenue, and has a market cap of $238.74 billion. The company earned high ratings by U.S. News for its job stability, "belongingness," and quality of pay.

Chevron also appeared in U.S. News' industry-specific "Best in Energy and Resources" list, the "Best Companies in the South" list, and the "Best for Internships" list.

Chevron is joined by three other Houston energy leaders:

Calpine – Best in Energy and Resources; Best Companies (overall)
ConocoPhillips – Best in Energy and Resources; Best Companies (overall); Best in Caregiving; Best Companies in the South
Occidental – Best in Energy and Resources; Best Companies (overall); Best Companies in the South

Other top companies to work for in Houston are:

American Bureau of Shipping (ABS) — Best in Engineering and Construction; Best Companies (overall)
Hines – Best in Real Estate and Facilities Management; Best Companies (overall)
Insperity, Kingwood – Best in Healthcare and Research; Best Companies (overall); Best in Caregiving; Best Companies in the South
KBR – Best in Engineering and Construction; Best Companies (overall); Best Companies in the South
Men's Warehouse – Best in Consumer Products; Best Companies (overall)
PROS – Best in Information Technology; Best Companies (overall); Best Companies in the South
Skyward Specialty Insurance – Best in Finance and Insurance; Best Companies (overall); Best Companies in the South

"'Best' is a subjective term relative to career satisfaction, and many aspects factor into someone’s decision to apply for a job with any given company," U.S. News said. "But some universally desired factors can contribute to a good workplace, such as quality pay, good work-life balance, and opportunities for professional development and advancement

In all, 30 employers headquartered in the Lone Star State made it onto U.S. News' 2025-2026 "Best Places to Work For" lists. Houston and the Dallas-Fort Worth metro area tied for the most employers make the list, at 11 companies each. Diamondback Energy in Midland was the only company from West Texas to make it on the list for the second year in a row.

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A version of this article originally appeared on CultureMap.com.

Twenty-six Houston-area companies landed on the latest Fortune 500 list. Photo via Getty Images

Houston earns No. 3 spot among cities with most Fortune 500 headquarters

biggest companies

Houston maintained its No. 3 status this year among U.S. metro areas with the most Fortune 500 headquarters. Fortune magazine tallied 26 Fortune 500 headquarters in the Houston area, behind only the New York City area (62) and the Chicago area (30).

Last year, 23 Houston-area companies landed on the Fortune 500 list. Fortune bases the list on revenue that a public or private company earns during its 2024 budget year.

On the Fortune 500 list for 2025, Spring-based ExxonMobil remained the highest-ranked company based in the Houston area as well as in Texas, sitting at No. 8 nationally. That’s down one spot from its No. 7 perch on the 2024 list. During its 2024 budget year, ExxonMobil reported revenue of $349.6 billion, up from $344.6 billion the previous year.

Here are the rankings and 2024 revenue for the 25 other Houston-area companies that made this year’s Fortune 500:

No. 16 Chevron, $202.8 billion
No. 28 Phillips 66, $145.5 billion
No. 56 Sysco, $78.8 billion
No. 75 Conoco Phillips, $56.9 million
No. 78 Enterprise Products Partners, $56.2 billion
No. 92 Plains GP Holdings, $50 billion
No. 143 Hewlett-Packard Enterprise, $30.1 billion
No. 153 NRG Energy, $28.1 billion
No. 155 Baker Hughes, $27.8 billion
No. 159 Occidental Petroleum, $26.9 billion
No. 183 EOG Resources, $23.7 billion
No. 184 Quanta Services, $23.7 billion
No. 194 Halliburton, $23 billion
No. 197 Waste Management, $22.1 billion
No. 214 Group 1 Automotive, $19.9 billion
No. 224 Corebridge Financial, $18.8 billion
No. 256 Targa Resources, $16.4 billion
No. 275 Cheniere Energy, $15.7 billion
No. 289 Kinder Morgan, $15.1 billion
No. 345 Westlake Corp., $12.1 billion
No. 422 APA, $9.7 billion
No. 443 NOV, $8.9 billion
No. 450 CenterPoint Energy, $8.6 billion
No. 474 Par Pacific Holdings, $8 billion
No. 480 KBR Inc., $7.7 billion

Nationally, the top five Fortune 500 companies are:

Walmart
Amazon
UnitedHealth Group
Apple
CVS Health

“The Fortune 500 is a literal roadmap to the rise and fall of markets, a reliable playbook of the world's most important regions, services, and products, and an indispensable roster of those companies' dynamic leaders,” Anastasia Nyrkovskaya, CEO of Fortune Media, said in a news release.

Among the states, Texas ranks second for the number of Fortune 500 headquarters (54), preceded by California (58) and followed by New York (53).

The Oxy Innovation Center is now open at the Ion in Houston, and a new coworking space launches this week. Photo courtesy of the Ion

Oxy opens energy-focused innovation center in Midtown Houston

moving in

Houston-based Occidental officially opened its new Oxy Innovation Center with a ribbon cutting at the Ion last month.

The opening reflects Oxy and the Ion's "shared commitment to advancing technology and accelerating a lower-carbon future," according to an announcement from the Ion.

Oxy, which was named a corporate partner of the Ion in 2023, now has nearly 6,500 square feet on the fourth floor of the Ion. Rice University and the Rice Real Estate Company announced the lease of the additional space last year, along with agreements with Fathom Fund and Activate.

At the time, the leases brought the Ion's occupancy up to 90 percent.

Additionally, New York-based Industrious plans to launch its coworking space at the Ion on May 8. The company was tapped as the new operator of the Ion’s 86,000-square-foot coworking space in Midtown in January.

Dallas-based Common Desk previously operated the space, which was expanded by 50 percent in 2023 to 86,000 square feet.

CBRE agreed to acquire Industrious in a deal valued at $400 million earlier this year. Industrious also operates another local coworking space is at 1301 McKinney St.

Industrious will host a launch party celebrating the new location Thursday, May 8. Find more information here.

Oxy Innovation Center. Photo via LinkedIn.

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

1PointFive, a subsidiary of Oxy, was granted the first-ever EPA permits for its large-scale carbon capture and sequestration facility in Texas. Photo via 1pointfive.com

Oxy subsidiary granted landmark EPA permits for carbon capture facility

making progress

Houston’s Occidental Petroleum Corp., or Oxy, and its subsidiary 1PointFive announced that the U.S Environmental Protection Agency approved its Class VI permits to sequester carbon dioxide captured from its STRATOS Direct Air Capture (DAC) facility near Odessa. These are the first such permits issued for a DAC project, according to a news release.

The $1.3 billion STRATOS project, which 1PointFive is developing through a joint venture with investment manager BlackRock, is designed to capture up to 500,000 metric tons of CO2 annually and is expected to begin commercial operations this year. DAC technology pulls CO2 from the air at any location, not just where carbon dioxide is emitted. Major companies, such as Microsoft and AT&T, have secured carbon removal credit agreements through the project.

The permits are issued under the Safe Drinking Water Act's Underground Injection Control program. The captured CO2 will be stored in geologic formations more than a mile underground, meeting the EPA’s review standards.

“This is a significant milestone for the company as we are continuing to develop vital infrastructure that will help the United States achieve energy security,” Vicki Hollub, Oxy president and CEO, said in a news release.“The permits are a catalyst to unlock value from carbon dioxide and advance Direct Air Capture technology as a solution to help organizations address their emissions or produce vital resources and fuels.”

Additionally, Oxy and 1PointFive announced the signing of a 25-year offtake agreement for 2.3 million metric tons of CO2 per year from CF Industries’ upcoming Bluepoint low-carbon ammonia facility in Ascension Parish, Louisiana.

The captured CO2 will be transported to and stored at 1PointFive’s Pelican Sequestration Hub, which is currently under development. Eventually, 1PointFive’s Pelican hub in Louisiana will include infrastructure to safely and economically sequester industrial emissions in underground geologic formations, similar to the STRATOS project.

“CF Industries’ and its partners' confidence in our Pelican Sequestration Hub is a validation of our expertise managing carbon dioxide and how we collaborate with industrial organizations to become their commercial sequestration partner,” Jeff Alvarez, President of 1PointFive Sequestration, said in a news release.

1PointFive is storing up to 20 million tons of CO2 per year, according to the company.

“By working together, we can unlock the potential of American manufacturing and energy production, while advancing industries that deliver high-quality jobs and economic growth,” Alvarez said in a news release.

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Houston maritime startup raises $43M to electrify cargo vessels

A Houston-based maritime technology company that is working to reduce emissions in the cargo and shipping industry has raised VC funding and opened a new Houston headquarters.

Fleetzero announced that it closed a $43 million Series A financing round this month led by Obvious Ventures with participation from Maersk Growth, Breakthrough Energy Ventures, 8090 Industries, Y Combinator, Shorewind, Benson Capital and others. The funding will go toward expanding manufacturing of its Leviathan hybrid and electric marine propulsion system, according to a news release.

The technology is optimized for high-energy and zero-emission operation of large vessels. It uses EV technology but is built for maritime environments and can be used on new or existing ships with hybrid or all-electric functions, according to Fleetzero's website. The propulsion system was retrofitted and tested on Fleetzero’s test ship, the Pacific Joule, and has been deployed globally on commercial vessels.

Fleetzero is also developing unmanned cargo vessel technology.

"Fleetzero is making robotic ships a reality today. The team is moving us from dirty, dangerous, and expensive to clean, safe, and cost-effective. It's like watching the future today," Andrew Beebe, managing director at Obvious Ventures, said in the news release. "We backed the team because they are mariners and engineers, know the industry deeply, and are scaling with real ships and customers, not just renderings."

Fleetzero also announced that it has opened a new manufacturing and research and development facility, which will serve as the company's new headquarters. The facility features a marine robotics and autonomy lab, a marine propulsion R&D center and a production line with a capacity of 300 megawatt-hours per year. The company reports that it plans to increase production to three gigawatt-hours per year over the next five years.

"Houston has the people who know how to build and operate big hardware–ships, rigs, refineries and power systems," Mike Carter, co-founder and COO of Fleetzero, added in the release. "We're pairing that industrial DNA with modern batteries, autonomy, and software to bring back shipbuilding to the U.S."

Shell partners with UK-based co. for hydrogen electrolyzer pilot

ultra-efficient electrolyzer

Shell Global Solutions International, a subsidiary of Shell, which maintains its U.S. headquarters in Houston, has signed a collaboration agreement with London-based Supercritical Solutions to advance Supercritical’s ultra-efficient hydrogen electrolyzer technology toward a field pilot demonstration.

In the deal, the companies will collaborate on a paid technology feasibility study that will support the evaluation and planning of the pilot demonstration, according to a news release. Supercritical Solutions’ technology aims to deliver high-efficiency renewable hydrogen at a lower cost for the industrial hydrogen market.

"Signing this collaboration agreement with Shell is a major milestone for Supercritical Solutions and an important step on our commercialisation journey,” Luke Tan, co-founder of Supercritical, said in the news release. “We are directly addressing the cost and complexity barriers facing the renewable hydrogen market. We are excited to move forward with a company like Shell, whose global leadership has been proven to accelerate innovative technologies to market.”

Supercritical’s hydrogen electrolyser technology can operate at high temperatures and pressures of up to 220 bar without the need for an external hydrogen compressor, rare-earth materials or easily degradable membranes. The technology removes the typical compression step in the process while delivering hydrogen at industry standards. It requires significantly less energy than many traditional electrolyzers and is more cost-efficient.

This recent investment builds on an ongoing relationship between Shell and Supercritical. Supercritical was founded in 2020 and was runner-up in Shell’s New Energy Challenge, which helps startups and scaleups develop sustainable technologies, in 2021. Shell Ventures then invested in Supercritical’s Series A funding round in 2024 with Toyota Ventures.

3 Houston-area companies named to Global Cleantech 100

Energized

Three Houston-area companies—Amperon, Hertha Metals and Vaulted Deep—appear on this year’s Global Cleantech 100 list.

The unranked list, generated by market intelligence and advisory firm Cleantech Group, identifies the 100 privately held companies around the world that are most likely to make a significant impact in the cleantech market over the next five to 10 years.

For the 2026 list, Cleantech Group received more than 24,000 Global Cleantech 100 nominations from nearly 60 countries. Cleantech Group scored those companies and narrowed the contenders to 264. An expert panel reviewed those nominees, and the list was whittled down to the 100 winners.

Here’s a rundown of the three Houston-area honorees:

Amperon

Founded in 2018 by Sean Kelly and Abe Stanway, Houston-based Amperon offers an AI-enabled energy forecasting and analytics platform designed to help stabilize electric grids. Amperon received undisclosed amounts of venture capital from National Grid Partners and Tokyo Gas Co. Ltd. last year and announced a recent investment from Samsung Ventures earlier this month.

Hertha Metals

Founded in 2022 by Laureen Meroueh, Conroe-based Hertha Metals provides a single-step process for producing sustainable steel. Last year, the company emerged from stealth mode and raised more than $17 million in venture capital.

Vaulted Deep

Vaulted Deep’s technology injects excess organic waste underground to remove carbon dioxide from the atmosphere. Julia Reichelstein and Omar Abou-Sayed founded the Houston-based company in 2023. Last year, the startup raised $32.3 million in venture capital. Also in 2025, Vaulted Deep signed a 12-year deal with software giant Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

Vaulted Deep also made the list last year, along with Houston-based Syzygy Plasmonics and Fervo Energy. Fervo was also named the 2025 North American Company of the Year by Cleantech Group.

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