Texas billionaire Elon Musk, Houston energy execs named richest in America by Forbes

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Elon Musk is the richest person in Austin and in America. Photo by Justin Sullivan/Getty Images

SpaceX and Tesla co-founder Elon Musk has topped Forbes' list as the wealthiest person in America for the third time. Musk is one of seven Austin billionaires who have made the new Forbes 400, a list of the 400 richest people in the United States for 2024.

Forbes estimates Musk's net worth in 2024 as $244 billion, which is $7 billion less than his estimated net worth last year. Musk, 53, is the cofounder of seven companies, including SpaceX, xAI, The Boring Company, among others. He serves as the CEO of Tesla, which is headquartered in Austin.

In 2022, Musk famously acquired Twitter in a $44 billion deal.

"Forbes estimates that the social media company, which he renamed X, is worth nearly 70 percent less as of August 2024.," Forbes wrote in Musk's profile.

Most recently, court filings revealed Musk shifted his plans to relocate X's headquarters from San Francisco to Bastrop, a city 30 miles southeast of Austin. He originally stated he would be moving the company's headquarters to Austin in July 2024, after California Governor Gavin Newsom signed a new law that barred school districts from requiring staff to notify parents of their child’s gender identification change.

A dozen of Houston's illustrious billionaires have also made the cut on the list. Houston hospitality king and Rockets owner Tilman Fertitta is the 12th richest Texan and the 99th richest person in the United States, according to Forbes' list, released October 1.

Forbes estimates Fertitta's net worth in 2024 as $10.1 billion, which has steadily climbed from his 2023 net worth of $8.1 billion. Fertitta, 67, purchased the Houston Rockets in October 2017 for $2.2 billion. The billionaire also owns Texas-based hospitality and entertainment corporation Landry's. In 2019, Fertitta embarked on a new venture as an author.

"Fertitta released his first book titled Shut Up And Listen! in September [2019], detailing his experiences in the dining and entertainment industries," Forbes wrote in Fertitta's profile.

The Forbes 400list is a definitive ranking of the wealthiest Americans, using interviews, financial data, and documentation provided by billionaires and their companies.

According to the report, America's elite class is now worth $5.4 trillion collectively, which is a $1 trillion jump since 2023.

“The Forbes 400 is richer than ever, and it’s harder than ever to be one of the 400 richest people in America," said Forbes senior editor Chase Peterson-Withorn in a press release.

In all, 43 Texas billionaires made the list. Newcomers include Houston-based Westlake Corporation co-owners Albert Chao, James Chao, and their respective families. According to their Forbes profiles, the Chaos own nearly 25 percent of Westlake Corporation, which produces low-density polyethylene that is used for food packaging and other products.

"His father, T.T. Chao, moved the family from Taiwan to the U.S. and founded Westlake in 1986," Albert Chao's profile says. "Albert and brother James Chao are credited with helping launch the company. Albert was CEO from 2004 to July 2024, when he became executive chairman. James was chairman from 2004 to July 2024, when he became senior chairman."

Here's how the rest of Houston's billionaires fared on this year's list:

Oil and gas chairman Richard Kinder ranks No. 112 nationally with an estimated worth of $9.3 billion.
Houston pipeline heir Randa Duncan Williams ties for No. 126 with an estimated net worth of $8.6 billion. Fellow pipeline heirs Dannine Avara and Milane Frantz tie for 130th nationally. Each has an estimated net worth of $8.5 billion. Scott Duncan ranks No. 137 with an $8.3 billion estimated net worth.
Toyota mega-dealer Dan Friedkin and Houston oil tycoon Jeffery Hildebrand tie for 156th nationally with an estimated net worth of $7.6 billion.
Houston Texans owner Janice McNair ties for No. 210 nationally with an estimated net worth of $6.2 billion.
Energy exploration chief exec George Bishop of The Woodlands ranks No. 266 with an estimated net worth of $5 billion.

Missing from the 2024 list is local hedge fund honcho John Arnold, who ranked No. 345 nationally in 2023 but now ranks No. 991 in 2024 with an estimated net worth of $3.3 billion. As of October 1, Forbes estimates Arnold's net worth at $2.9 billion.

Find all the Texans on the new Forbes 400 list here.

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This article originally ran on CultureMap.

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Houston expert discusses the clean energy founder's paradox

Guest Column

Everyone tells you to move fast and break things. In clean energy, moving fast without structural integrity means breaking the only planet we’ve got. This is the founder's paradox: you are building a company in an industry where the stakes are existential, the timelines are glacial, and the capital requires patience.

The myth of the lone genius in a garage doesn’t really apply here. Clean energy startups aren’t just fighting competitors. They are fighting physics, policy, and decades of existing infrastructure. This isn’t an app. You’re building something physical that has to work in the real world. It has to be cheaper, more reliable, and clearly better than fossil fuels. Being “green” alone isn’t enough. Scale is what matters.

Your biggest risks aren’t competitors. They’re interconnection delays, permitting timelines, supply chain fragility, and whether your first customer is willing to underwrite something that hasn’t been done before.

That reality creates a brutal filter. Successful founders in this space need deep technical knowledge and the ability to execute. You need to understand engineering, navigate regulation, and think in terms of markets and risk. You’re not just selling a product. You’re selling a future where your solution becomes the obvious choice. That means connecting short-term financial returns with long-term system change.

The capital is there, but it’s smarter and more demanding. Investors today have PhDs in electrochemistry and grid dynamics. They’ve been burned by promises of miracle materials that never left the lab. They don't fund visions; they fund pathways to impact that can scale and make financial sense. Your roadmap must show not just a brilliant invention, but a clear, believable plan to drive costs down over time.

Capital in this sector isn’t impressed by ambition alone. It wants evidence that risk is being retired in the right order — even if that means slower growth early.

Here’s the upside. The difficulty of clean energy is also its strength. If you succeed, your advantage isn’t just in software or branding. It’s in hardware, supply chains, approvals, and years of hard work that others can’t easily copy. Your real competitors aren’t other startups. They’re inertia and the existing system. Winning here isn’t zero-sum. When one solution scales, it helps the entire market grow.

So, to the founder in the lab, or running field tests at a remote site: your pace will feel slow. The validation cycles are long. But you are building in the physical world. When you succeed, you don’t have an exit. You have a foundation. You don't just have customers; you have converts. And the product you ship doesn't just generate revenue; it creates a legacy.

If your timelines feel uncomfortable compared to software, that’s because you’re operating inside a system designed to resist change. And let’s not forget you are building actual physical products that interact with a complex world. Times are tough. Don’t give up. We need you.

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Nada Ahmed is the founding partner at Houston-based Energy Tech Nexus.

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.

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