Houston-Dallas bullet train gets back on the rails, races greener Texas travel

speeding back

The high-speed train project, which is expected to reduce greenhouse gas emissions by more than 100,000 tons per year, is back on track. Photo courtesy of JR Central

In the latest chapter in the saga of the high-speed bullet train between Houston and Dallas, Amtrak is now involved.

According to a press release, Texas Central Partners and Amtrak are exploring a partnership to work together on the proposed Dallas-Houston high-speed rail project that's been under consideration for more than a decade.

Amtrak has cooperated with Texas Central on various initiatives since 2016 and the two entities are now evaluating a potential partnership to determine the line's viability.

“If we are going to add more high-speed rail to this country, the Dallas to Houston Corridor is a compelling proposition and offers great potential,” says Amtrak senior VP of High-Speed Rail Development Programs Andy Byford. “We believe many of the country's biggest and fastest-growing metropolitan areas, like Houston and Dallas, deserve more high quality high-speed, intercity rail service, and we are proud to bring our experience to evaluate this potential project and explore opportunities with Texas Central so the state can meet its full transportation needs.”

The route being proposed would span approximately 240 miles, going at 250 mph, resulting in a trip that would take less than 90 minutes between the two cities.

Texas Central has been working towards getting a train rolling since 2013, including lining up a potential builder in 2021. But the project has had pushback from Texas politicians and landowners along the route; a lawsuit against the project was filed by six rural counties in 2021, and the Texas Legislature passed a law prohibiting the state from spending any funds on the project.

Facing a seeming dead end, Texas Central CEO Carlos Aguilar and its board members resigned in June 2022; Michael Bui, a consultant, has been serving as CEO since then.

Texas Central and Amtrak have submitted applications to several federal programs in connection with further study and design work, including the Consolidated Rail Infrastructure Safety and Improvements (CRISI) grant program, the Corridor Identification and Development program, and the Federal-State Partnership for Intercity Passenger Rail (FSP-National) grant program.

Amtrak previously entered into an agreement with Texas Central to provide through-ticketing using the Amtrak reservation system and other support services for the planned high-speed rail line.

"This high-speed train, using advanced, proven Shinkansen technology, has the opportunity to revolutionize rail travel in the southern U.S., and we believe Amtrak could be the perfect partner to help us achieve that,” says Bui in a statement.

Despite its detractors, the project is forecast to provide social, environmental, employment and economic benefits including reducing greenhouse gas emissions by more than 100,000 tons per year, saving 65 million gallons of fuel and removing 12,500 cars per day from I-45.

The release from Amtrak has statements from both Dallas Mayor Eric L. Johnson and Houston Mayor Sylvester Turner, who calls the collaboration between Texas Central and Amtrak "an important milestone for the City of Houston and this project."

Byford joined Amtrak in April 2023 to begin developing a team focused on high-speed opportunities throughout the U.S. In his newly created role, he will develop and lead the execution of Amtrak’s long-term strategy for high-speed rail throughout the country, including the extension of the Crescent from Mississippi through Louisiana and Texas; Kansas DOT’s Heartland Flyer Extension Corridor Identification and Development (Corridor ID) connecting Wichita to Oklahoma and Texas, and TxDOT’s applications for the Texas Triangle (Houston — Dallas – Fort Worth – San Antonio) routes.

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This article originally ran on CultureMap.

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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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