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Houston researchers launch 2 nature-based carbon credit projects

seeing green

Both projects will seek to develop “tracking and evaluation systems for the emerging nature-based carbon credit market.” Photo via Getty Images

A team at Rice University has announced plans for two research projects that will focus on nature-based carbon credits.

The George R. Brown School of Engineering and the Severe Storm Prediction, Education and Evacuation from Disasters (SSPEED) Center reported that the projects will be funded through a gift from Emissions Reduction Corp. with the goal of advancing global decarbonization through a series of carbon sequestration, avoidance and reduction projects.

Both projects will seek to develop “tracking and evaluation systems for the emerging nature-based carbon credit market” according to a news release.

“The Rice School of Engineering is very interested in research into nature-based engineering solutions,” Luay Nakhleh, the William and Stephanie Sick Dean of Engineering and a professor of computer science and biosciences at Rice, says in the release. “For too long, we have used nature as a platform but not as a partner. This research will hopefully open the door on a new era of nature-based engineering. Moreover, this is a very timely initiative as bringing science to bear on the emergent carbon credit economy is of critical importance to meeting the challenges of a changing climate.”

For the first project, which is expected to take six months, the SSPEED Center will be commissioning the design of a digital monitoring, reporting and verification (dMRV) system for tracking nature-based carbon credits using satellite and drone imagery to monitor coastal blue carbon projects, soil, and forest projects.

The direct input of this data into blockchain and other record-keeping technologies will be the main part of the system. .A Houston-based local nonprofit carbon registry BC Carbon, and blockchain provider Change Code will also take part in the research.

The second project will see the SSPEED Center undertake hydrologic computer modeling, and take 12 to 18 months to complete. This will help determine the effectiveness of restoring native prairie grasslands as a flood control technique where a portion of the Brazos River will be modeled relative to predict increases in the frequency of “100-year floods” via climate change. Overall, it will evaluate whether prairie restoration funded via soil carbon credits could mitigate flooding risk, which could eliminate the need to raise the 30 miles of levees in Fort Bend County downstream of the carbon project. The George Foundation,BCarbon, and Fort Bend County Flood Control District will work together on this project.

“Using nature to solve flooding problems has been discussed but seldom executed at the level of a major river system,” Herman Brown Professor of Engineering and SSPEED Center director at Rice Phillip Bedient adds. “We are excited that carbon credits and prairie restoration might break open this nature-based flood engineering area.”

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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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