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

biggest companies

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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EDP Renewables North America LLC has announced four new solar projects in Texas, Mississippi and Illinois for major tech customers. Photo via Getty Images

Houston renewables developer powers 4 new solar parks for Amazon, Microsoft

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Houston-based EDP Renewables North America LLC announced that it has powered up four new projects across the country for customers Amazon and Microsoft.

The new projects come about a month after EDP Renewables powered up its new California solar park for Houston-based Shell Energy North America and the Eureka, California-based Redwood Coast Energy Authority.

EDP Renewables announced that it also launched the 100-megawatt Ragsdale Solar Park in Madison Country, Mississippi, in Q4 2024. Amazon has contracted for all 100 megawatts from the solar park through a 15-year power agreement.

The Ragsdale project is the company's second utility-scale project in Mississippi after EDP Renewables launched its Pearl River Solar Park last year.

“Ragsdale signifies EDP Renewables’ ongoing commitment to Mississippi, its communities, and local businesses. The opportunity to develop utility-scale solar and contract directly with customers like Amazon, who are also committed to expanding their own presence in Mississippi, has been invaluable," Sandhya Ganapathy, CEO of EDP Renewables North America, said in a statement. "We are proud to aid the state’s commercial and industrial growth with homegrown energy solutions."

Additionally, EDP Renewables has powered three new projects for tech-giant Microsoft, with two in Illinois and one in Texas.

In December EDP Renewables powered a 150-megawatt Cattlemen II Solar Project in Milam County, Texas, about 70 miles northeast of the Austin area. It joins the 240-megawatt Cattlemen I Solar Park, which came online a year prior.

The company also launched the 140-megawatt Wolf Run Solar Project near Jacksonville, Illinois, and the Hickory Solar Project in Jerseyville, Illinois, late last year. The Hickory project was developed in conjunction with D.C.-based Volt Energy Utility.

Microsoft has agreed to purchase 389 megawatts and renewable energy credits from the projects, which brings the portfolio between the two companies up to five projects in total. It also includes the Timber Road IV Wind Farm located in Payne, Ohio.

"The importance of ensuring benefits flowing from renewable energy development directly into communities has never been more important,” Ganapathy added in a statement. “Through these three additional projects, we’re keeping our promise – and indeed the industry’s promise – to contribute to the nation’s growing energy demand and in that process invest in long-lasting economic growth of our communities.”

Events not to miss, nomination deadline for awards program for innovative energy businesses, and more things to know this week. Photo via Getty Images

Calling all energy startups, Amazon enters the DAC chat, and more things to know this week

hou knew?

Editor's note: It's a new week — start it strong with three quick things to know in Houston's energy transition ecosystem. Submit an energy transition company to an awards program, read how Amazon entered the DAC conversation, and learn about events not to miss this week.

Houston Innovation Awards nominations coming to a close

Photo via Getty Images

If you haven't heard, EnergyCapital's sister site, InnovationMap, is accepting nominations for the 2023 Houston Innovation Awards. The deadline to submit is tomorrow, September 19, and there are several categories that might be of interest to the Houston energy transition ecosystem, such as:

Hardtech Business, honoring an innovative company developing and commercializing a physical technology
Digital Solutions Business, honoring an innovative company developing and programming a digital solution to a problem in an industry
Sustainability Business, honoring an innovative company providing a solution within renewables, climatetech, clean energy, alternative materials, circular economy, and beyond
Corporate of the Year, honoring a corporation that supports startups and/or the Houston innovation community
People's Choice: Startup of the Year, selected via an interactive voting portal during the event

Now, these are only a few categories this year. To submit a nomination and read more about the awards, click here.

Events to have on your radar

Photo courtesy of The Cannon

September 21 — The Rice Alliance Energy Tech Venture Forum is an opportunity to learn about the latest emerging technologies, meet investors to seek funding, see promising companies, and more. (Note: I'm moderating a panel about venture investment at 2 pm)
September 21 — UH Energy Symposium, a panel series, is hosting its next installment, entitled Plastics, Chemicals, Circularity: What's Next?
September 28 — Chevron Technology Ventures seeks to identify novel technologies and innovation systems that stand to transform and improve facility-focused operational efficiencies, via the Chevron Technology Ventures Pitch Competition. Six Houston companies will compete to win a tailored field trial opportunity with CTV experts, plus a six-month, complimentary, flexible-workspace membership at The Cannon.

Amazon makes investment in direct air capture by way of Houston-based Oxy

Photo via 1pointfive.com

Houston-based cleantech company 1PointFive is among the recipients of e-commerce giant Amazon’s first investments in carbon-fighting direct air capture (DAC).

Amazon has agreed to buy 250,000 metric tons of carbon removal credits from Stratos, 1PointFive’s first DAC plant, over a 10-year span. That commitment is equivalent to the amount of carbon stored naturally across more than 290,000 acres of U.S. forecasts, says Amazon.

As Amazon explains, DAC technology filters CO2 from the atmosphere and stores it in underground geological formations. Aside from being stored, removed carbon can be used to make building materials like bricks, cement, and concrete. Read more.

Amazon has agreed to buy 250,000 metric tons of carbon removal credits from 1PointFive’s first DAC plant. Photo via 1pointfive.com

Oxy's cleantech arm scores Amazon DAC investment

carbon capture client

Houston-based cleantech company 1PointFive is among the recipients of e-commerce giant Amazon’s first investments in carbon-fighting direct air capture (DAC).

Financial terms of the deal weren’t disclosed.

1PointFive is a carbon capture, utilization, and sequestration (CCUS) subsidiary of Houston-based energy company Occidental Petroleum.

The carbon captured for Amazon will be stored deep underground in saline aquifers — large geological rock formations that are saturated in saltwater.

1PointFive is constructing its first DAC plant in Ector County, which is anchored by Odessa. The facility is expected to be the world’s largest DAC plant, capturing up to 500,000 tons of CO2 per year. Amazon Web Services (AWS) will provide real-time performance data for the plant.

“Amazon’s purchase and long-term contract represent a significant commitment to direct air capture as a vital carbon removal solution,” Michael Avery, president and general manager of 1PointFive, says in a news release. “We are excited to collaborate with Amazon to help them achieve their sustainability goals.”

1PointFive broke ground on the Stratos plant in April. Its project partners include British Columbia-based Carbon Engineering and Australia-based Worley. The plant is expected to be fully operational by mid-2025.

1PointFive envisions establishing more than 100 DAC facilities around the world by 2035.

The Amazon deal isn’t the only major deal for 1Point5 this summer.

In August, the U.S. Department of Energy (DOE) announced a $600 million grant for a 1PointFive-operated DAC hub that will be built in South Texas. The more than 100,000-acre hub, comprising 30 individual DAC projects, eventually may remove and store up to 30 million metric tons of CO2 per year.

Also in August, Japan’s All Nippon Airways (ANA) said it reached an agreement with 1PointFive to buy 10,000 metric tons of carbon removal credits per year over a three-year period starting in 2025. The credits will be generated by 1PointFive’s Stratos plant.

In the U.S., DAC has gotten a huge boost from the federal government. The Inflation Reduction Act, passed in 2022, includes tax credits for capturing and storing carbon via DAC.

The International Energy Agency says 27 DAC plants have been commissioned around the world, with at least 130 more in the development stage. One forecast predicts the value of the global market for DAC systems will climb past $2.3 billion by 2030.

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Houston climatech startup raises $29M funding round

fresh funding

Houston-based NanoTech Materials has closed a $29.4 million Series A.

The round was led by Austin-based HPI Real Estate & Investments. Houston-based Goose Capital and Austin-based Milliken & Company also participated.

Nanotech has developed its patented Insulative Ceramic Particle (ICP) technology, which reduces heat transfer in buildings and outdoor infrastructure, improving efficiency and safety. It's known for its Cool Roof Coat, Wildfire Shield and Insulative Coat: Cool Touch product lines.

With the new funding, Nanotech plans to scale operations and expand its market reach for its products.

“We’re addressing one of the pressing and urgent challenges facing infrastructure owners today: controlling energy costs and extending asset life,” Mike Francis, CEO and co-founder of NanoTech Materials, said in a news release. “This financing marks a transformative moment for us. It allows us to rapidly scale production and bring our high-performance materials to market faster, while delivering measurable cost savings and redefining what resilience looks like in today’s built environment.”

Nanotech launched in 2020 and was the first company selected for Halliburton Labs. It moved into a 43,000-square-foot space in Katy in 2023. It brought on new partners that expanded the company's reach in the Middle East and Singapore the following year. Its technology was recognized as one of Time magazine's 200 Best Inventions of 2024.

“We were early investors in Nanotech Materials and are pleased to continue supporting the company as it becomes a leader in breakthrough materials science and technology,” John Chaney, investor at Goose Capital and board member at NanoTech, added in the release. “NanoTech’s ability to elevate fire resilience and energy efficiency in the built environment is critical for strengthening and hardening infrastructure. Its pioneered approach is transforming current building standards and making our lives safer.”

The company has secured $34.4 million in total to date, according to the release. It raised an oversubscribed funding round in 2023 and a $5 million seed round in 2020.

Houston clean energy startup acquired by battery storage company FlexGen

m&a activity

A North Carolina company has acquired Houston-based Clean Energy Services, a provider of services for battery energy storage systems and utility-scale solar, for an undisclosed amount.

The buyer is Durham, North Carolina-based FlexGen Power Systems, a provider of battery energy storage software and services.

Clean Energy Services (CES), whose offices are at the Ion, will operate as a subsidiary of FlexGen. Existing CES customers will continue to receive services from CES without disruption or change, FlexGen says.

“Demand for reliable, high-performance power is accelerating, and customers need partners who can deliver at scale,” Kelcy Pegler, CEO of FlexGen, said in a news release. “The addition of CES strengthens our service platform and reinforces our leadership in energy storage technology.”

Ahmad Atwan and Constantine Triantafyllides co-founded CES in 2022. As a startup, CES had raised $8 million in venture capital, according to PitchBook.

“CES has achieved a market leadership position in battery storage services by focusing on reliable speed of service delivery and optimizing asset performance,” Atwan, the company’s CEO, added the release. “FlexGen and CES have been strong partners for years, and this transaction enables us to deliver more robust solutions across a complementary set of customers and markets.”

CES will continue to operate its remote operations center in Houston for over 1 gigawatt of solar assets and 4.5 gigawatt-hours of battery assets, while FlexGen will maintain its remote operations center in Durham.

Halliburton Labs names 4 new clean energy startups to incubator

green team

Four new companies have joined Halliburton Labs, the incubator for early-stage energy and climate startups run by Houston energy giant Halliburton.

Halliburton Labs provides the emerging companies with mentorship, industry connections, laboratory access and other resources as they work toward commercialization, according to a news release.

The four new members include:

Nandina REM, a Singapore-based company that delivers carbon fiber thermoplastics. It turns end-of-life assets into new, reliable, high-performance materials for the aviation, aerospace and defense industries in a fraction of the time of standard supply chains.
Noon Energy, a California-based company that delivers clean, reliable electricity with ultra-long duration energy storage. Its system uses solid oxide electrochemical cells and stores energy as abundant, flexible industrial gases.
Proof Energy, a Silicon Valley-based company developed by the Lawrence Berkeley National Laboratory that is commercializing next-generation metallic solid oxide fuel cell (M-SOFC) technology. Its system uses widely available fuels such as ethanol, methanol, ammonia, and natural gas as hydrogen carriers to enable lower-cost, low-emission commercial transportation, and also offers a zero-emission heating solution to preserve battery range in electric vehicles.
Tidal Metals, a New Jersey-based company that has developed technology to economically make decarbonized magnesium metal from seawater and electricity.

"Halliburton Labs exemplifies our commitment to advance a secure and pragmatic energy future," Jeff Miller, chairman, president and CEO of Halliburton, said in the news release. "We welcome these companies into our ecosystem, where they will gain access to the tools, expertise, and connections needed to scale their technologies."

Auckland-based Aquafortus Technologies and California-based Sunchem joined Halliburton Labs in September. With the addition of the four new members, the incubator currently supports six early-stage companies.

Read more about the incubator's 2025 cohort here.

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