Houston joint venture secures $5.2M for AI-powered methane tracking tech

fresh funds

Envana Software Solutions' tech allows an oil and gas company to see a full inventory of greenhouse gases. Photo via Getty Images

Houston-based Envana Software Solutions has received more than $5.2 million in federal and non-federal funding to support the development of technology for the oil and gas sector to monitor and reduce methane emissions.

Thanks to the work backed by the new funding, Envana says its suite of emissions management software will become the industry's first technology to allow an oil and gas company to obtain a full inventory of greenhouse gases.

The funding comes from a more than $4.2 million grant from the U.S. Department of Energy (DOE) and more than $1 million in non-federal funding.

“Methane is many times more potent than carbon dioxide and is responsible for approximately one-third of the warming from greenhouse gases occurring today,” Brad Crabtree, assistant secretary at DOE, said in 2024.

With the funding, Envana will expand artificial intelligence (AI) and physics-based models to help detect and track methane emissions at oil and gas facilities.

“We’re excited to strengthen our position as a leader in emissions and carbon management by integrating critical scientific and operational capabilities. These advancements will empower operators to achieve their methane mitigation targets, fulfill their sustainability objectives, and uphold their ESG commitments with greater efficiency and impact,” says Nagaraj Srinivasan, co-lead director of Envana.

In conjunction with this newly funded project, Envana will team up with universities and industry associations in Texas to:

Advance work on the mitigation of methane emissions
Set up internship programs
Boost workforce development
Promote environmental causes

Envana, a software-as-a-service (SaaS) startup, provides emissions management technology to forecast, track, measure and report industrial data for greenhouse gas emissions.

Founded in 2023, Envana is a joint venture between Houston-based Halliburton, a provider of products and services for the energy industry, and New York City-based Siguler Guff, a private equity firm. Siguler Gulf maintains an office in Houston.

“Envana provides breakthrough SaaS emissions management solutions and is the latest example of how innovation adds to sustainability in the oil and gas industry,” Rami Yassine, a senior vice president at Halliburton, said when the joint venture was announced.

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In all, DOE recently allocated $518 million to 23 CCUS projects in the U.S. Photo via Getty Images

DOE dishes out funding to 2 Houston carbon caption projects

ccus news

Two Houston companies have received federal funding to develop carbon capture and storage projects.

Evergreen Sequestration Hub LLC, a partnership of Houston-based Trace Carbon Solutions and Jacksonville, Mississippi-based Molpus Woodlands Group, got more than $27.8 million from the U.S. Department of Energy for its Evergreen Sequestration Hub project in Louisiana. DOE says the project is valued at $34.8 million.

The hub will be built on about 20,000 acres of timberland in Louisiana’s Calcasieu and Beauregard parishes for an unidentified customer. It’ll be capable of storing about 250 million metric tons of carbon dioxide.

Trace Carbon Solutions, a subsidiary of Trace Midstream Partners, is developing CCS assets and supporting midstream infrastructure across North America. Molpus, an investment advisory firm, buys, manages, and sells timberland as an investment vehicle for pension funds, college endowments, foundations, insurance companies, and high-net-worth investors.

Another Houston company, RPS Expansion LLC, has received $9 million from the DOE to expand the River Parish Sequestration Project. Following the expansion, the project will be able to store up to 384 million metric tons of carbon dioxide. The CCUS hub is between Baton Rouge and New Orleans.

DOE says the River Parish expansion is valued at $11.8 million.

Also receiving DOE funding is a CCUS project to be developed off the coast of Corpus Christi. The developer is the Southern States Energy Board, based in Peachtree Corners, Georgia.

DOE is chipping in more than $51.1 million for the nearly $64 million hub. It’s estimated that about 35 million metric tons of carbon dioxide emissions are released each year from about 50 industrial and power facilities within a 100-mile radius of Mustang Island. Port Aransas is located on the 18-mile-long island.

In all, DOE recently allocated $518 million to 23 CCUS projects in the U.S.

“The funding … will help ensure that carbon storage projects — crucial to slashing harmful carbon pollution — are designed, built, and operated safely and responsibly across all phases of development to deliver healthier communities as well as high-quality American jobs,” Brad Crabtree, assistant DOE secretary for fossil energy and carbon management, says in a news release.

Students from the University of Houston are celebrating a win at a national competition focused on carbon innovation. Photo via UH.edu

University of Houston team places in prestigious DOE collegiate challenge

top of class

A team of students from the University of Houston have placed in the top three teams for a national competition for the Department of Energy.

The inaugural American-Made Carbon Management Collegiate Competition, hosted by the U.S. Department of Energy's Office of Fossil Energy and Carbon Management, or FECM, tasked the student teams with "proposing regional carbon networks capable of transporting at least one million metric tons of carbon dioxide per year from industrial sources," according to a news release from DOE.

“With this competition, DOE hopes to inspire the next generation of carbon management professionals to develop carbon dioxide transport infrastructure that will help drive technological innovation and emissions reductions, new regional economic development, and high-wage employment for communities across the United States,” Brad Crabtree, assistant secretary of fossil energy and carbon management at DOE, says in the release.

GreenHouston, the University of Houston team mentored by Assistant Professor Jian Shi from the UH Cullen College of Engineering, took third place in the competition, securing a $5,000 cash prize. Sequestration Squad of University of Michigan secured first place and $12,000 and Biggest Little Lithium of the University of Nevada won second and a $8,000 prize.

The UH team's proposal was for an optimized carbon dioxide transportation pipeline for the Houston area. The presentation included cost analysis, revenue potential, safety considerations, weather hazards, and social impact on neighboring communities, according to a release from UH.

“We chose the greater Houston metropolitan area as our target transition area because it is a global hub of the hydrocarbon energy industry,” says Fatemeh Kalantari, team leader, in the release.

“Our team was committed to delivering an optimized and cost-effective carbon dioxide transfer plan in the Houston area, with a focus on safety, environmental justice, and social engagement,” she continues. “Our goal is to ensure the health and safety of the diverse population residing in Houston by mitigating the harmful effects of carbon dioxide emissions from refineries and industries in the area, thus avoiding environmental toxicity.”

With the third place win, GreenHouston will get to present their proposal at DOE’s annual Carbon Management Research Project Review Meeting slated for August.

"We are thrilled to see the exceptional work and dedication displayed by the GreenHouston team in this competition," said Ramanan Krishnamoorti, vice president of energy and innovation at UH. "The team’s innovative proposal exemplifies UH’s commitment to addressing the pressing global issue of carbon management and advancing sustainable practices. We wish the students continued success."

The team included four Cullen College of Engineering doctoral students from the Department of Electrical and Computer Engineering – Kalantari, Massiagbe Diabate, Steven Chen, and Simon Peter Nsah Abongmbo – and one student, Bethel O. Mbakaogu, pursuing his master’s degree in supply chain and logistics technology.

The prize money will go toward funding additional research, refining existing technologies, addressing remaining challenges and raising awareness of CCUS and its project, according to the release, as the team feels a responsibility to continue to work on the GreenHouston project.

“The energy landscape by 2050 will be characterized by reduced greenhouse gas emissions, cleaner air quality, and a more sustainable environment,” Kalantari says. “The transition to green energy will not only mitigate the harmful effects of carbon dioxide on climate change but also create new jobs, promote economic growth, and enhance energy security. This is important, and we want to be part of it.”

The team of students plans to continue to work on the GreenHouston project. Photo courtesy

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This article originally ran on InnovationMap.

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Hertha Metals raises $133M Series A round, plans high-purity iron plant

cleaner steel

Conroe-based Hertha Metals has closed a $133.65 million Series A round that includes a $65 million equity investment from the Pentagon. The startup uses a one-step process to convert iron into molten steel or high-purity iron.

Khosla Ventures and Doerr Capital co-led the round, with participation from CEV, Pear Ventures, Gates Frontier, Niterra SUISO no MORI Fund, Toyota Ventures, and Siemens Financial Services.

The federal investment came from the U.S. Department of Defense’s Industrial Base Analysis and Sustainment program. The program aims to strengthen and modernize the U.S. Defense Industrial Base, a network that researches, designs, builds, and maintains military weapons, equipment, technology, and services.

The Series A funding will finance construction of Hertha Chalyx, a plant that will be capable of producing 10,000 metric tons of steel-grade and magnet-grade high-purity iron.

Hertha says Chalyx will provide U.S.-made material for manufacturers of rare-earth magnets. Today, China controls more than 90 percent of the global manufacturing of rare-earth magnets.

Rare-earth magnets can be found in fighter jets, smart bombs, submarines, satellites, drones and other military hardware. These magnets are also key components in electric vehicle motors, wind turbines, computer hard drives, smartphones, headphones, cordless tools and an array of other products.

“Every electric vehicle, aerospace platform, radar system, and data center depends on domestic iron and magnet feedstock suppliers,” Laureen Meroueh, founder and CEO of Hertha, said in a press release.

“Hertha Chalyx closes that gap,” she added. “We are building the supply chain this country needs, and we are doing it by providing a domestic cost-competitive option for manufacturers while unlocking safer and cleaner production.”

Hertha says Chalyx, alongside its Pi100 pilot project, will be the first modern-day “iron and steel innovation complex.” The startup expects to break ground on Chalyx this year.

Since its founding in 2022, Hertha has raised more than $150 million from investors.

This spring, Hertha led the manufacturing category on Fast Company’s list of the World’s Most Innovative Companies of 2026.

3 must-know fall application deadlines for Houston energy innovators

Editor's note: As fall reaches full swing, Houston's innovation and cleantech scene is calling on the latest batch of founders and startups looking to make a difference. A number of accelerators have opened applications. Read below to see which might be a good fit for you or your venture. And take careful note of the deadlines. Please note: this article may be updated to include additional information and programs.

Did we miss an accelerator or competition accepting applications? Email innoeditor@innovationmap.com for editorial consideration.

Greentown Lab's Go Make 2027: Advanced Carbon Materials with ExxonMobil

Deadline: Oct. 9

Details: Greentown Labs is seeking applications from startups developing novel carbon-based technologies for its latest Go Make cohort in conjunction with ExxonMobil. The structured accelerator is designed to facilitate validation activities and explore potential long-term collaborations with Exxon, according to Greentown. Founders will have the opportunity to engage directly with industry leaders to test, validate and scale their carbon technologies in real commercial contexts. The program tentatively starts on Jan. 20, 2027 and concludes June 16, 2027. Find more information here.

Activate's U.S. Fellowship Cohort 2027

Deadline: Oct. 30

Details: Activate supports scientists at "the outset of their entrepreneurial journey." It partners with U.S.-based funders and research institutions to support its fellows in developing high-impact technology. Its fellows receive a living stipend, research and development funding, connections from Activate's robust network of mentors and access to a curriculum specific to the program for two years. Applicants must have a bachelor’s degree and 4-plus years of post-baccalaureate scientific research, engineering or technology development experience. Their work must be based in the physical or biological sciences or related engineering disciplines. Find more information here.

Rice Innovation Fellows

Deadline: Oct. 30

Details: The Liu Idea Lab for Innovation and Entrepreneurship (Lilie)'s Rice Innovation Fellows program supports Rice Ph.D. students and postdocs in turning their research into real-world ventures. Participants receive $10,000 in translational research funding, co-working space and personalized mentorship. Candidates from all Rice engineering and science-related disciplines are encouraged to apply. Find more information here.

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A version of this article originally appeared on our sister site, InnovationMap.

Houston carbon removal company secures $35M in financing

national scale

Houston-based Vaulted Deep, a waste management and carbon removal company, has announced a major $35 million debt facility from Italian investment bank Mediobanca to support its national expansion.

U.K.-based market energy solutions CFP Energy arranged the deal, which is “the largest publicly disclosed U.S. commercial debt deal in durable carbon removal to be secured by long-term purchase contracts,” according to a news release from the companies.

The financing will support new waste disposal sites for Vaulted Deep and advancements of the company’s AI-enabled site development platform. The platform helps identify locations, navigate permitting and optimize injection operations. When candidates are looking for sites, the platform will pull from regulatory, geology and waste-supply data to assist, which Vaulted Deep says will help streamline the permitting process. After the site is operating, the platform helps control algorithms to maximize safe disposal capacity and monitor the process along the way.

"Waste operators across the country need new options as traditional disposal options become limited,” Julia Reichelstein, CEO and co-founder of Vaulted Deep, said in the release. “This financing lets us take on more projects and invest in the tools that help us evaluate and develop new sites faster. This is a meaningful milestone for Vaulted as we move into the next phase of building infrastructure at a much larger scale."

The deal is supported by Vaulted Deep's long-term waste service and carbon removal purchase contracts. The company says it delivered more than 20,000 tons of carbon removal to buyers in the first half of 2026, which is more than it delivered in all of 2025.

"By facilitating these types of transactions, we connect institutional capital with innovative climate technologies, helping accelerate the deployment of high-integrity carbon removal solutions,” Tyler Manchester, head of voluntary carbon for CFP Energy, added in the release. “It reflects growing investor confidence in these solutions, driven by rising demand from corporate buyers seeking permanent pathways to support net-zero commitments and long-term climate strategies."

Beyond the facility, Vaulted Deep has secured $48 million in equity financing in addition to its $8 million from the XPRIZE Carbon Removal competition, backed by Elon Musk’s charitable organization, The Musk Foundation.

The company's well injection technology is used to store organic waste deep underground in stable geologic formations. In 2025, it inked a 12-year deal with Microsoft to remove up to 4.9 million metric tons of carbon dioxide from the environment.

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