These 10 companies are ones to look out for. Getty Images

From fast-charging batteries and hydrogen fuel alternatives to metals recycling and artificial intelligence-driven data tools, energy tech startups have a lot to offer the industry.

After nearly 60 pitches, the Rice Alliance for for Technology and Entrepreneurship named 10 startups to look out for in the energy industry. The announcement was made at the conclusion of the annual Energy and Clean Technology Venture Forum hosted at Rice University on September 11.

Of the 10, five hail from Houston. Check out this year's energy tech startups to look out for.

Sensytec

Fresh off a win from Houston's inaugural MassChallenge Texas cohort, Houston-based Sensytec again scored big. Sesnsytec's technology is known as the "smart concrete" because they've created a device that can be embedded into concrete and monitor its structure in real time. The company was founded out of the University of Houston in 2016 by Ody de la Paz.

Rheidiant

Another Houston-based company, Rheidiant uses industrial Internet of Things to optimize data from the pipelines. As a result, Rheidiant's technology can increase productivity, reduce leaks, quickly respond in emergency situations, and enhance visibility in the field. Rheidiant was founded in 2014 by CEO Murat Ocalan.

Nesh

Houston-based Nesh has created a smart assistant for oil and gas. Using artificial intelligence, Nesh can answer any question from an oil and gas employee to improve their decision-making process and cut down on the time it takes to find solutions. Nesh was founded in 2018 by Sidd Gupta and the company closed its seed round in April.

GBatteries

GBatteries, based in Ottawa, Canada, is changing the lithium battery charging game. With a mission of revolutionizing the electric car industry, GBatteries has created an artificial intelligence-backed technology that can charge a lithium battery to half full in 5 minutes. The company has 10 patents granted and 28 pending and has pilot programs in the works with automotive companies.

HARBO Technologies

Tel Aviv, Israel-based HARBO Technologies bills itself as the fastest and most effective oil spill response system in the world.The company's T-Fence system can be deployed quickly and by a team of as little as two people. HARBO was founded in 2013 by CEO Boaz Ur and has raised three rounds of funding, according to Crunchbase.

Sensorfield

It's not the first time Houston-based Sensorfield has been deemed most promising by the Rice Alliance. The company has created easy to install, wireless devices for monitoring throughout the industrial process. In May, the startup was selected for Chevron Technology Ventures' Catalyst Program.

MolyWorks Materials Corp.

California startup, MolyWorks Materials Corp., is improving the way industrial materials are recycled by building by creating a network of distributed recycling and additive manufacturing. Old metals materials go in, and metallic powder for manufacturing new products come out.

Lilac Solutions

Oakland, California-based Lilac Solutions exists to enhance lithium production as the demand rises with the growth of the electronic vehicles industry. Lilac has created a unique ion exchange technology that can lower the cost of lithium production while increasing the speed. The company is currently operating pilot programs.

Mission Secure

Mission Secure Inc. has created an industrial control system that can protect energy companies from potential cybersecurity threats as well as educate on the process. Based in Charlottesville, Virginia, MSI is venture backed and serving clients in Houston.

Syzygy Plasmonics

Houston-based Syzygy Plasmonics is fresh off a $5.8 million series A funding round it closed in August. The company is creating a hydrogen fuel cell technology that produces a cheaper source of energy that releases fewer carbon emissions. The hydrogen-fueled technology originated out of research done over two decades by two Rice University professors, Naomi Halas and Peter Nordlander. Earlier this summer, the Rice Alliance named Syzygy a most promising startup at the Offshore Technology Conference.

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Houston maritime startup raises $43M to electrify vessels, opens new HQ

Maritime Mission

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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This article originally appeared on EnergyCapitalHTX.com.

Innovative Houston-area hardtech startup closes $5M seed round

fresh funding

Conroe-based hardtech startup FluxWorks has closed a $5 million seed round.

The funding was led by Austin-based Scout Ventures, which invests in early-stage startups working to solve national security challenges.

Michigan Capital Network also contributed to the round from its MCN Venture Fund V. The fund is one of 18 selected by the Department of Defense and Small Business Administration to participate in the Small Business Investment Company Critical Technologies Initiative, which will invest $4 billion into over 1,700 portfolio companies.

FluxWorks reports that it will use the funding to drive the commercialization of its flagship Celestial Gear technology.

"At Scout, we invest in 'frontier tech' that is essential to national interest. FluxWorks is doing exactly that by solving critical hardware bottlenecks with its flagship Celestial Gear technology ... This is about more than just gears; it’s about strengthening our industrial infrastructure," Scout Ventures shared in a LinkedIn post.

Fluxworks specializes in making contactless magnetic gears for use in extreme conditions, which can enhance in-space manufacturing. Its contactless design leads to less wear, debris and maintenance. Its technology is particularly suited for space applications because it does not require lubricants, which can be difficult to control at harsh temperatures and in microgravity.

The company received a grant from the Texas Space Commission last year and was one of two startups to receive the Technology in Space Prize, funded by Boeing and the Center for the Advancement of Science in Space (CASIS), in 2024. It also landed $1.2 million through the National Science Foundation's SBIR Phase II grant this fall.

Fluxworks was founded in College Station by CEO Bryton Praslicka in 2021. Praslicka moved the company to Conroe 2024.