Texas company lines up hundreds electric-hybrid planes for takeoff

flying green

Behold the future JSX Aura Aero Era 19-seat hybrid-electric aircraft. Rendering courtesy of JSX

Hop-on jet service JSX is soaring into a more eco-friendly future with plans to acquire more than 300 hybrid-electric airplanes.

The Dallas-based air carrier revealed in a release that they'll add up to 332 small hybrid planes in 2028, allowing them to connect to smaller, underserved communities around the country.

"Following the Biden Administration’s call last week for the aviation industry to cut carbon emissions ... JSX expects to take delivery of its first hybrid-electric aircraft in 2028, shepherding the next chapter of regional aviation as the first in its category to adopt this impactful cutting-edge renewable energy technology," JSX says in the release. "While commercial airlines can serve just 480 airports in the United States, JSX’s small community-friendly Part 135 and Part 380 Public Charter operations, combined with the exceptional performance capabilities of these hybrid-electric airplanes, enables service opportunities to thousands of federally funded airports otherwise inaccessible to people who can’t own or charter an entire aircraft."

The new cutting-edge airplanes will come from manufacturers Electra, Aura Aero, and Heart Aerospace and will include:

up to 82 Electra eSTOL 9-seat aircraft (32 firm orders and 50 options)
up to 150 Aura Aero Era 19-seat planes (50 firm orders and 100 options)
up to 100 Heart Aerospace ES-30 30-seat planes (50 firm orders and 50 options)

JSX currently operates about 50 semi-private planes configured with 30 seats, from private terminals in major cities including Dallas (Love Field) and Houston (Hobby Airport), and in "leisure" markets such as Destin, Florida and the Bahamas. The company recently shifted part of its operational focus to small markets (such as Midland-Odessa).

JSX promises a "no crowds, no lines, and no fuss" travel experience, allowing customers to check in and "hop on" just 20 minutes before departure. The carrier recently came under fire from federal regulators and major commercial airlines for its looser security regulations that more closely resemble those of charter providers than those of domestic airlines.

JSX is now doubling down on its pledge to service underserved cities, declaring in the release, "JSX has mastered the trifecta of marketing, selling, and operating attainable by-the-seat public charter air service to numerous small communities that have no other regular air service."

The future Heart Aerospace ES-30 30-seat hybrid-electric aircraft in JSX livery. Rendering courtesy of JSX

The new smaller, electric-hybrid aircraft will allow JSX to "dramatically lower the cost of its service and open new flight options at over 2,000 U.S. airports," they say, "stimulating local economies and empowering regional mobility and connectivity for communities devoid of regular air service today."

They point specifically to Del Rio, Texas, which has lost all commercial air service since the pandemic, they say, as an example of a small city that now can be reconnected to major cities in a cost-effective, sustainable way.

"The favorable operating economics of the Aura Aero Era, Heart ES-30, and Electra eSTOL can create thousands of new and expanded air travel options across the United States without the need for government subsidy," the company says.

In a statement, JSX CEO and cofounder Alex Wilcox adds, "As the network airlines order ever-larger aircraft it is inevitable that more and more small markets will be abandoned. Electra, Aura Aero, and Heart Aerospace are visionary organizations that share in JSX’s commitment to serving smaller communities, working together with us to weave sustainable regional air travel back into the fabric of American commerce and freedom of movement.”

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This article originally ran on CultureMap.

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Houston geothermal company raises $97M Series B

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Houston-based geothermal energy startup Sage Geosystems has closed its Series B fundraising round and plans to use the money to launch its first commercial next-generation geothermal power generation facility.

Ormat Technologies and Carbon Direct Capital co-led the $97 million round, according to a press release from Sage. Existing investors Exa, Nabors, alfa8, Arch Meredith, Abilene Partners, Cubit Capital and Ignis H2 Energy also participated, as well as new investors SiteGround Capital and The UC Berkeley Foundation’s Climate Solutions Fund.

The new geothermal power generation facility will be located at one of Ormat Technologies' existing power plants. The Nevada-based company has geothermal power projects in the U.S. and numerous other countries around the world. The facility will use Sage’s proprietary pressure geothermal technology, which extracts geothermal heat energy from hot dry rock, an abundant geothermal resource.

“Pressure geothermal is designed to be commercial, scalable and deployable almost anywhere,” Cindy Taff, CEO of Sage Geosystems, said in the news release. “This Series B allows us to prove that at commercial scale, reflecting strong conviction from partners who understand both the urgency of energy demand and the criticality of firm power.”

Sage reports that partnering with the Ormat facility will allow it to market and scale up its pressure geothermal technology at a faster rate.

“This investment builds on the strong foundation we’ve established through our commercial agreement and reinforces Ormat’s commitment to accelerating geothermal development,” Doron Blachar, CEO of Ormat Technologies, added in the release. “Sage’s technical expertise and innovative approach are well aligned with Ormat’s strategy to move faster from concept to commercialization. We’re pleased to take this natural next step in a partnership we believe strongly in.”

In 2024, Sage agreed to deliver up to 150 megawatts of new geothermal baseload power to Meta, the parent company of Facebook. At the time, the companies reported that the project's first phase would aim to be operating in 2027.

The company also raised a $17 million Series A, led by Chesapeake Energy Corp., in 2024.

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."

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