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

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

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).

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Envana Software Solutions' tech allows an oil and gas company to see a full inventory of greenhouse gases. Photo via Getty Images

Houston joint venture secures $5.2M for AI-powered methane tracking tech

fresh funds

Houston-based Envana Software Solutions has received more than $5.2 million in federal and non-federal funding to support the development of technology for the oil and gas sector to monitor and reduce methane emissions.

Thanks to the work backed by the new funding, Envana says its suite of emissions management software will become the industry's first technology to allow an oil and gas company to obtain a full inventory of greenhouse gases.

The funding comes from a more than $4.2 million grant from the U.S. Department of Energy (DOE) and more than $1 million in non-federal funding.

“Methane is many times more potent than carbon dioxide and is responsible for approximately one-third of the warming from greenhouse gases occurring today,” Brad Crabtree, assistant secretary at DOE, said in 2024.

With the funding, Envana will expand artificial intelligence (AI) and physics-based models to help detect and track methane emissions at oil and gas facilities.

“We’re excited to strengthen our position as a leader in emissions and carbon management by integrating critical scientific and operational capabilities. These advancements will empower operators to achieve their methane mitigation targets, fulfill their sustainability objectives, and uphold their ESG commitments with greater efficiency and impact,” says Nagaraj Srinivasan, co-lead director of Envana.

In conjunction with this newly funded project, Envana will team up with universities and industry associations in Texas to:

Advance work on the mitigation of methane emissions
Set up internship programs
Boost workforce development
Promote environmental causes

Envana, a software-as-a-service (SaaS) startup, provides emissions management technology to forecast, track, measure and report industrial data for greenhouse gas emissions.

Founded in 2023, Envana is a joint venture between Houston-based Halliburton, a provider of products and services for the energy industry, and New York City-based Siguler Guff, a private equity firm. Siguler Gulf maintains an office in Houston.

“Envana provides breakthrough SaaS emissions management solutions and is the latest example of how innovation adds to sustainability in the oil and gas industry,” Rami Yassine, a senior vice president at Halliburton, said when the joint venture was announced.

Halliburton Labs has named its latest cohort. Photo courtesy of Halliburton

Halliburton names 5 clean energy startups to latest incubator cohort

clean team

Halliburton Labs has named five companies to its latest cohort, including one from Texas.

All of the companies are working to help accelerate the future of the energy industry in different ways. The incubator aims to advance the companies’ commercialization with support from Halliburton's network, facilities and financing opportunities.

The five new members include:

360 Energy, an Austin-based in-field computing company with technology that is able to capture flared or stranded gas and monetize it through modular data centers
Cella, a New York-based mineral storage company that provides end-to-end services, from resource assessment to proprietary injection technology, and monitoring techniques to provide geologic carbon storage solutions
Espiku, an engineering services company based in Bend, Oregon, that finds solutions that advance water and minerals recovery from brines and industrial-produced water streams
Mitico, based in Los Angeles, that offers technology services to capture carbon dioxide by using its patent-pending granulated metal carbonate sorption technology (GMC) that captures more than 95% of the CO2 emitted from post-combustion point sources
NuCube, a Pasadena, California-based company with a nuclear fission reactor under development

“We welcome these innovative energy startups,” Dale Winger, managing director of Halliburton Labs, said in a news release. “We are eager to help these participant companies use their time and capital efficiently to progress new solutions that meet industry requirements for cost, reliability, and sustainability.”

Halliburton Labs also announced that it will host the Finalists Pitch Day on March 26, 2025, in Denver for energy and decarbonization industry innovators, startups and investors ahead of the National Renewable Energy Laboratory (NREL) Industry Growth Forum. The pitch event will precede registration and the opening reception of the NREL forum. Find more information here.

Adena Power, an Ohio-based clean energy startup, was the latest to join Halliburton Labs prior to the new cohort. The company used three patented materials to produce a sodium-based battery that delivers clean, safe and long-lasting energy storage.

The incubator also named San Francisco-based venture capital investor Pulakesh Mukherjee, partner at Imperative Ventures, which specializes in hard tech decarbonization startups, to its advisory board last spring.

Read more about the incubator's 2023 cohort here.

Adena Power uses three patented materials to produce a sodium-based battery that delivers clean, safe, long-lasting energy storage. Photo via adenapower.com

Sodium-based battery startup joins Halliburton Labs

new cohort co.

An Ohio-based clean energy startup has joined Houston-based Halliburton Labs, an incubator for early-stage energy tech companies.

Adena Power uses three patented materials to produce a sodium-based battery that delivers clean, safe, long-lasting energy storage. The startup is trying to capitalize on the 100 terawatt-hour potential for energy storage in the U.S. grid.

“With Halliburton Labs’ support and operational expertise, Adena Power looks to accelerate scaling and take advantage of the high-growth market opportunity,” Nathan Cooley, co-founder and CEO of Adena Power, says in a news release.

Adena, founded in 2022, supplies energy storage batteries for the commercial, industrial, and utility sectors. The startup has collected funding from four investors, according to PitchBook: OhioXcelerate, Third Derivative, BRITE Energy Innovators, and For ClimateTech.

Adena’s addition to Halliburton Labs comes during a momentous year for the company. For example:

Adena won the People’s Choice Award at the National Renewable Energy Labs Industry Growth Forum.
Adena earned the MAKE IT (Manufacture of Advanced Key Energy Infrastructure Technologies) Prize from the U.S. Department of Energy.

“Our team is ready to collaborate with Adena to help them accelerate their growth to meet the demand for behind-the-meter storage solutions,” says Dale Winger, managing director of Halliburton Labs.

Halliburton Labs is a wholly owned subsidiary of Halliburton, a provider of products and services for the energy industry. The incubator will have pitches at the inaugural Houston Energy and Climate Startup Week next month.

According to Halliburton, the pump will offer an “efficient, safe, and agile solution that streamlines geothermal operations and enhances overall performance.” Photo via halliburton.com

Halliburton introduces new pump technology designed for geothermal

fresh tech

Houston-based Halliburton has introduced a new technology that is designed specifically for geothermal energy applications.

The Summit ESP GeoESP is an advanced submersible borehole and surface pump technology GeoESP lifting pumps, which address challenges related to the transport of fluids to the surface through electric submersible pumps (ESP).

According to a news release from Halliburton, the pump will offer an “efficient, safe, and agile solution that streamlines geothermal operations and enhances overall performance.”

The inlet design minimizes power consumption, protects the pump against solids, and tackles scale formation. GeoESP lifting pumps can withstand extreme conditions with the ability to operate at temperatures up to 220°C (428°F) and can resist scale, corrosion, and abrasion.

GeoESP lifting pumps also use standard pump dimensions customized to suit various geothermal well conditions. With that, Halliburton will also offer a digital approach to geothermal well management with the Intelevat data science-driven platform to empower operators with real-time diagnostics and visualizations of “smart” field data. Halliburton states the system will improve well operations, increase production, extend system run life,reduce energy consumption, and minimize shutdowns.

“With increased global focus on low carbon energy sources, we are using our many decades of geothermal production expertise to help our customers maximize safety and improve efficiency,” Vice President of Artificial Lift Greg Schneider says in the release. “GeoESP lifting pumps build upon our current system to minimize power usage and help push the boundaries of what is possible with more complex well designs.”

Recently, more Houston-based companies have invested in geothermal technologies. GA Drilling and ZeroGeo Energy, a Swiss company specializing in renewable energy, announced a 12-megawatt Hot Dry Rock Geothermal Power Plant (Project THERMO), which is the first of several geothermal power and geothermal energy storage projects in Europe.

Additionally, Fervo Energy is exploring the potential for a geothermal energy system at Naval Air Station Fallon in Nevada. Sage Geosystems is working on an exploratory geothermal project for the Army’s Fort Bliss post in Texas. The Bliss project is the third U.S. Department of Defense geothermal initiative in the Lone Star State.

The Department of Energy announced two major initiatives that will reach the Gulf of Texas and Louisiana in U.S. Secretary of Energy Jennifer M. Granholm's address at CERAWeek by S&P Global in March. The Department of Energy’s latest Pathways to Commercial Liftoff report are initiatives established to provide investors with information of how specific energy technologies commercialize and what challenges they each have to overcome as they scale.

"Geothermal has such enormous potential,” she previously said during her address at CERAWEEK. “If we can capture the 'heat beneath our feet,' it can be the clean, reliable, base-load scalable power for everybody from industries to households."

Halliburton and ConocoPhillips were named to the 2023 Dow Jones Sustainability Indices. Photo via halliburton.com

2 Houston energy companies secure Dow Jones sustainability rating

seeing green

Halliburton and ConocoPhillips were named to the 2023 Dow Jones Sustainability Indices, which assesses the “sustainability performance of companies transparency process” based on an annual S&P Global Corporate Sustainability Assessment.

The CSA evaluates companies’ sustainability practices, and covers over 10,000 companies globally. The CSA has focused on financially material and industry-specific sustainability criteria since 1999.

The methodology of the annual CSA is updated to reflect the objectives to ensure that the CSA captures and delivers high-quality, material sustainability data, and increases efficiency and ease for participating companies. Over 13,000 companies get invited to participate in the CSA, but just 3,500 of the largest companies globally are eligible for inclusion.

In 2023, the DJSI saw a strong response from companies that disclosed their sustainability performance to capital markets through the CSA process.

For Halliburton, 2023 marks the third consecutive year that the company has been named to the prestigious list. Halliburton and ConocoPhillips are the only Houston companies that made the 2023 list.

“At Halliburton, we are constantly developing new and better ways to meet the growing global energy demand while advancing a more sustainable energy future,” Summer Condarco, senior vice president of Service Quality, Continuous Improvement, and Chief HSE Officer, says in a news release. “We are honored to be recognized by the Dow Jones Sustainability Indices for our commitment to sustainability leadership.”

See the full list of companies here.

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Houston startup raises $6M to grow AI platform for solar, battery contractors

fresh funding

Houston tech startup Artemis has raised $6 million from 10 investors. The company offers an AI-supported platform that enables solar, battery storage and home improvement contractors to design, sell and finance energy projects.

Long Journey and Copec WIND Ventures co-led the round, with participation from angel investor Scott Banister, Coalition Operators, FJ Labs, Ludlow Ventures, Palm Tree Crew, Plug and Play Ventures, Shrug Capital and Tribeca Ventures.

To help propel growth, the company secured $10 million in financing last year (under its previous name, Monalee) from venture debt and growth credit provider Applied Real Intelligence. As Monalee, the company raised $16 million in venture capital.

The company was founded in 2022 as an installer of solar and battery storage projects. Five years later, the startup used in-house technology to establish its standalone software platform as it began pivoting away from installation. The company recently adopted the Artemis brand name.

Artemis says its platform saves time and money for installers of residential solar, battery storage, and energy projects. The platform combines an AI-powered design tool with embedded financing capabilities and compliance automation to create a single operating system.

The company says its customers report as much as a 72 percent reduction in software costs and up to 98 percent faster turnaround times. Thus far, more than 100 installers are using Artemis’ technology.

“Installers shouldn’t need six tools and a week of back-and-forth to sell a project," Walid Halty, co-founder and CEO of Artemis, said in a press release. “This funding gives us the fuel to scale our mission to compress design, financing, and compliance into a single flow so every installer can operate like a modern energy company. We’re not just speeding up deals, we're modernizing how distributed energy gets built.”

The Artemis platform, now available in the U.S. and soon to be launched in Latin America, caters to home improvement contractors, solar companies, lenders, and utilities.

“Artemis is transforming the complexity of distributed energy into elegant simplicity," added Arielle Zuckerberg, general partner at Long Journey.

Houston researchers propose model to scale e-waste recycling

critical research

The “missing link” in critical minerals may have been in our junk drawers all along, according to new research from the University of Houston.

Jian Shi, an associate professor in the UH Cullen College of Engineering, and his team have unveiled a new supply chain model that aims to make e-waste economically viable and could help make large-scale recycling possible.

Shi, along with professor Kailai Wang and graduate researcher Chuyue Wang, published the work in a recent issue of Nature. Their study outlines how gold, lithium and cobalt from discarded electronics can be kept circulating in the U.S. through the process of “urban mining.” It was supported by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) through the Vehicle Technologies Office.

The team’s research found that e-waste is the fastest-growing solid waste stream in the world. When waste from smartphones or tablets is left unmanaged, the devices can leak hazardous waste and pose significant fire risks due to aging batteries. Additionally, when they are shipped off to foreign landfills, the U.S. loses the potential to recycle or reuse the critical minerals left inside.

“A lot of people have iPads or old iPhones sitting in their drawers right now, and that’s a waste of a critical resource,” Shi said in a news release. “Urban mining allows us to extract the same high-value materials found in traditional mines without the environmental destruction. More importantly, it helps secure our domestic supply chain for the technologies of tomorrow.”

According to UH, recycling e-waste has not succeeded in the U.S. due to a fragmented recycling system, in which manufacturers, collectors and recyclers operate separately, driving up costs.

The UH team's research looks to change that.

In the study, the researchers modeled streamlined recycling efforts by mapping the interactions between manufacturers and independent recycling markets. Their dual-channel closed-loop supply chain (CLSC) model identified how these players can transition from competitors to partners, which can distribute profits more equitably and make recycling efforts more financially attractive.

According to UH, the research has particular significance due to the growing demand for electronic vehicles and their batteries.

“We can improve the performance of the entire recycling ecosystem and make the profit distribution more balanced,” Wang said in the release. “This ensures that the materials we need for EVs and advanced electronics stay right here in the U.S.”

“By making recycling work at scale, we aren’t just cleaning up waste,” Shi added. “We’re building a foundation that benefits both our national security and our economy.”

1PointFive signs latest deal, shares update on $1.3B carbon removal project

DAC deal

Houston-based 1PointFive, a subsidiary of Occidental Petroleum Corp., has secured another buyer of carbon dioxide removal credits for its $1.3 billion STRATOS project as it moves toward operation.

Bain & Company, a Boston-based consulting firm, has agreed to purchase 9,000 metric tons of carbon dioxide removal (CDR) credits from the direct air capture (DAC) facility over three years, according to a news release. DAC technology pulls CO2 from the air at any location, not just where carbon dioxide is emitted.

The deal is Bain's first purchase of DAC removal credits. The company has developed a program that helps clients purchase carbon credits from a range of carbon-removal technologies.

"We are proud to partner with 1PointFive and add them to our portfolio of engineered carbon removal technologies," Sam Israelit, Bain’s chief sustainability officer, said in the news release. "Their track record for developing DAC technology, coupled with their deep understanding of what it takes to deliver large-scale infrastructure projects, uniquely positions them to be a leader in this emerging segment.”

“We believe this agreement demonstrates continued momentum for the solution while supporting the development of vital domestic infrastructure,” Anthony Cottone, president and general manager of 1PointFive, added in the release.

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

The Texas-based STRATOS project is 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 approved Class VI permits for the project last year.

1PointFive says STRATOS is "progressing through start-up activities." The company shared in a LinkedIn post that Phase 1 of the project is expected to go online in Q2, with Phase 2 ramping up through the remainder of 2026.

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