Energy Tech Nexus announces international startups to pitch at Pilotathon

Ready, Set, Pitch

20-plus companies will pitch at Energy Tech Nexus' Pilotathon during Houston Energy & Climate Startup Week. Photo via Getty Images.

Energy Tech Nexus will host its Pilotathon and Showcase as part of Houston Energy & Climate Startup Week next Tuesday, Sept. 16, featuring insightful talks from industry leaders and pitches from an international group of companies in the clean energy space.

This year's event will center around the theme "Energy Access and Resilience." Attendees will hear pitches from nine Pilotathon pitch companies, as well as the 14 companies that were named to Energy Tech Nexus' COPILOT accelerator earlier this year.

COPILOT partners with Browning the Green Space, a nonprofit that promotes diversity, equity and inclusion (DEI) in the clean energy and climatetech sectors. The Wells Fargo Innovation Incubator (IN²) at the National Renewable Energy Laboratory backs the COPILOT accelerator, where companies are tasked with developing pilot projects for their innovations.

The nine Pilotathon pitch companies include:

Ontario-based AlumaPower, which has developed a breakthrough technology that converts the aluminum-air battery into a "galvanic generator," a long-duration energy source that runs on aluminum as a fuel
Calgary-based BioOilSolv, a chemical manufacturing company that has developed cutting-edge biomass-derived solvents
Atlanta-based Cultiv8 Fuels, which creates high-quality renewable fuel products derived from hemp
Newfoundland-based eDNAtec Inc., a leader in environmental genomics that analyzes biodiversity and ecological health
Oregon-based Espiku Inc., which designs and develops water treatment and mineral extraction technologies that rely on low-pressure evaporative cycles
New York-based Fast Metals Inc., which has developed a chemical process to extract valuable metals from complex toxic mine tailings that is capable of producing iron, aluminum, scandium, titanium and other rare earth elements using industrial waste and waste CO2 as inputs
New Jersey-based Metal Light Inc., which is building a circular, solid metal fuel that will serve as a replacement for diesel fuel
Glasgow-based Novosound, which designs and manufactures innovative ultrasound sensors using a thin-film technique to address the limitations of traditional ultrasound with applications in industrial, medical and wearable markets
Calgary-based Serenity Power, which has developed a cutting-edge solid oxide fuel cell (SOFC) technology

The COPILOT accelerator companies include:

Accelerate Wind
Aquora Biosystems Inc.
EarthEn
Electromaim
EnKoat
GeoFuels
Harber Coatings Inc.
Janta Power
NanoSieve
PolyQor Inc.
Popper Power
Siva Powers America
ThermoShade
V-Glass Inc.

Report evaluates Houston's potential as a climatetech hub with 6 key takeaways

seeing green

Three Houston energy tech innovators sought to quantify Houston's growth as an energy tech ecosystem, and, after 200 survey respondents and dozens of interviews, they've created six calls to action for the city.

Taylor Chapman, Gabe Malek, and Deanna Zhang created the Texas Climate Tech Collective to issue the Houston's Climate Tech Ecosystem 2023 report. The trio revealed some of its key takeaways at Greentown Houston's Climatetech Summit last month.

"We wanted to understand how the city has evolved," Malek, who's also chief of staff at Fervo Energy, said at the event. "We went into this project with a shared belief that Houston has unique characteristics that set it apart from the other cities thinking about climate, and if we could really lean into those characteristics, develop them, and amplify them, we could help grow the ecosystem in Houston and build climate solutions ... to accelerate the energy transition."

The full report, which is available online, highlighted six key takeaways paired with six action items.

1. "Houston has a perception problem."

Houston is known as a leader in the energy industry, which positions it well in a lot of ways, but in other ways, as Zhang points out, Houston might be being left out.

"People in this community like to talk about energy because we are the energy capital of the world, so we use a lot of energy-centric terms," she says, using "energy transition" as an example. "We don't use the word climate enough."

It might just be semantics, but it could be a reason the city isn't as regarded as a climatetech leader.

"If other ecosystems are using 'climate' and 'climatetech,' we need to be using these terms," she continues. "It's like SEO but for the ecosystem."

2. "Houston needs more risk capital, especially at the earlier stages."

Money is a huge factor, which comes as no surprise. While the city has a lot of corporations and private equity here, as Zhang explains, there seems to be room for improvement for early-stage resources.

"If you're a founder raising pre-seed, seed, or even series A, often times you have to go outside of Houston to meet those investors," she says.

According to the report, about half of survey respondents chose "access to venture capital" as one of the biggest challenges facing the ecosystem.

3. "Houston’s startup scene has improved radically."

The report found that 80 percent of responders agreed to the statement: “the ecosystem has improved dramatically over the last 5 years.” Meanwhile, 75 percent of respondents agreed that “Houston is more innovative than outsiders perceive it to be."

So what's holding the city back? According to the collective, "Shameless self-promotion of ecosystem accomplishments."

"We need to be shouting from the rooftops what is happening in this city. It's really a PR game," Zhang says.

4. "Houston’s energy resources and infrastructure have massive potential to create change, but are underutilized by the climate ecosystem."

The collective and survey respondents acknowledge that Houston has a lot of infrastructure already in place, but the call to action is for coordination of these resources.

"Greentown, Ion, Halliburton Labs, HETI — the list goes on and on, but people don't know where to start," Chapman says.

The report says the city's resources are "woefully undertapped" and "29 percent of respondents highlighted partnerships, coordination of existing assets, and Houston’s own future investments in infrastructure as potential accelerants to growth."

5. "Houston’s strong workforce and human capital are one of its greatest strengths – and it should be investing in transitioning that workforce to new opportunities."

Cultivating the workforce for the energy transition needs to be a major priority, according to the collective. The city has a talented workforce for engineering, technical, and project management talent.

"How do we reach and transition this workforce?" Chapman asks. "It's a huge opportunity and critical for Houston to ensure that its economic development continues to grow."

6. "Houston knows how to build...but needs to put expertise that towards climate innovation."

Houston as a major, sprawling city needs to continue to become "greener" in every way. While Chapman praises the city has done with its Climate Action Plan, Houston still lags other major cities like Los Angeles and New York in this way, per the report. Fourteen percent of respondents cited better climate-friendly infrastructure as a priority issue.

Chapman urged the audience to get involved locally to move the needle on more green initiatives for the city.

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Texas City ammonia plant acquired by Yara in $1.3 billion deal

Ammonia Acquisition

Yara North America, a subsidiary of Norwegian fertilizer and ammonia producer Yara International, has agreed to buy an ammonia production plant in Texas City for $1.3 billion.

The seller is GCA Holdings, an affiliate of Texas City-based chemical manufacturer Gulf Coast Ammonia, which is owned by private equity firms Lotus Infrastructure Partners and MB Energy.

The Texas City plant, with an eventual annual capacity of 1.3 million metric tons, is expected to start full production by the end of this year. Yara says the ammonia produced by the plant will serve its own fertilizer production system and its key customers.

During a recent call with analysts and investors, Magnus Ankarstrand, executive vice president and CFO of Yara International, said the plant holds the potential to become one of the company’s most profitable plants. The $1.3 billion purchase price, he added, “is a very attractive entry ticket to ammonia production in the U.S. at a very attractive cost.”

The Texas City plant will add to Yara’s holdings in the Lone Star State, as Yara is the majority owner of an ammonia, hydrogen and nitrogen production plant in Freeport.

Construction of the ammonia plant began in 2020, but technical and infrastructure issues delayed the project. On its website, Gulf Coast Ammonia says the plant represented a $600 million investment.

“Gulf Coast Ammonia is a world-class asset that required disciplined execution across development, financing, construction, and commercial structuring,” Philipp Pletka, managing director of Lotus Infrastructure Partners, says in a news release.

Trexlertown, Pennsylvania-based Air Products, which owns and operates the country’s largest hydrogen pipeline network, will continue to supply hydrogen and nitrogen for the plant under a long-term deal with Yara, according to the release.

However, the news comes two days after Yara International announced that it would no longer be purchasing ammonia assets in the Louisiana Clean Energy Complex (LCEC) from Air Products. In a separate release, Yara said it planned to reallocate funds toward "alternative mature U.S. ammonia investment opportunities with more competitive returns."

Houston hypersonic engine company lands $91M to accelerate production

Clean Speed

Houston-based Venus Aerospace has closed a $91 million Series B round and plans to scale the production of its hypersonic engine.

The round was led by Houston-based Mercury Fund with participation from Lockheed Martin Ventures, MESH, PEAK6, Draper Associates, Starboard Star Venture Capital, Green Sands Equity and other investors, according to a news release.

The investment comes about a year after Venus completed the first U.S. flight test of its high-thrust rotating detonation rocket engine (RDRE). The engine is expected to enable vehicles to travel four to six times the speed of sound from a conventional runway and is about 15 percent more efficient than traditional alternatives, according to the company.

Venus Aerospace says the latest round of funding will allow it to move the RDRE from demonstration to deployment and meet customer requirements for the near-term defense and space industries. The company says that the reusable RDRE is designed with a "common propulsion architecture" that can work for multiple industries and mission types.

“This financing marks an important step in moving Venus from breakthrough demonstration to scaled capability,” Sassie Duggleby, co-founder and CEO, said in the news release. “Our customers need propulsion systems that go farther, can be produced reliably and are built on supply chains they can trust. We are advancing that capability with American engineering and manufacturing talent to strengthen U.S. defense, expand space access and support the future of high-speed flight.”

Venus Aerospace raised a $20 million Series A in 2022, led by Wyoming-based Prime Movers Lab. At the time, the company said it would put the funding toward three main technologies: a next-generation rocket engine, aircraft shape and leading-edge cooling system.

The company also picked up an investment from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, in November 2025—in addition to funding from other investors over the years.

“Since our initial investment, Venus has progressed very quickly in its technology development," Chris Moran, vice president and general manager of Lockheed Martin Ventures, added in the release. "Our reinvestment in Venus recognizes Venus’ accomplishments to date and focus on speed to manufacture, cost management and reduction of supply chain constraints. Venus is working effectively to position its propulsion system for the production scale required by defense programs.”

"Venus is exactly the kind of company Houston capital should be backing," Blair Garrou, co-founder and managing partner at Mercury Fund, added in the release. "It combines multiple frontier technologies, domestic manufacturing and clear commercial and national security relevance. We believe this team is positioned to lead an important new chapter in defense and space, and we are proud to support a company building breakthrough technology here in Texas."

Venus Aerospace and Houston clean tech startup Vaulted Deep were also named to the World Economic Forum's Technology Pioneers community earlier this summer.

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This article first appeared on InnovationMap.com.

14 climatech startups join Greentown Houston in first half of 2026

green team

Climatech incubator Greentown Labs reports that 14 startups have joined its Houston community so far this year.

The companies are among 30 new startups to have joined Greentown Houston and Greentown Boston in 2026. Four of the companies are headquartered in Houston.

The startups are working on a range of "hydrogen-powered heavy-duty transport to AI-driven grid interconnection," according to Greentown.

The local startups that joined Greentown Houston include:

Houston-based Focis AI, which transforms industrial laser scans into structured asset intelligence to automatically identify, classify and map components in refineries and plants
Houston-based Iron Lattice, which develops next-generation memory technology for AI and high-performance computing that improves energy efficiency, endurance and scalability while remaining compatible with existing semiconductor manufacturing
Houston-based Orbital Arc, which is developing a new ion engine designed to improve the efficiency and scalability of spacecraft propulsion from low Earth orbit to deep space
Houston-based Sustain Energy LLC, which delivers cleaner, lower-cost fuel to industrial customers in pipeline-absent, underserved markets, cutting their energy costs and emissions with no infrastructure investment on their end

Other startups from around the world joined the Houston incubator in the same time period, including:

Ankara-based AIS Field, which develops robotic, AI-assisted non-destructive inspection systems, including submersible tank and boiler crawlers
San Francisco-based Armada AI, which builds rapidly deployable modular and edge data centers that run on local, stranded, or renewable power
San Francisco-based Armeta, which turns complex engineering drawings and legacy documentation into structured, usable data
Pittsburgh-based Atlas Robotics, which develops a Physical AI platform that powers autonomous material-handling robots and AI-guided forklifts
Ghana-based Cocoa Potash, which transforms high-emissions agricultural waste from cocoa, coconut, and palm-nut into organic potash, fertilizer and renewable energy
Israel-based Criaterra, which produces low-carbon, cement-free building materials
Italy-based ETAK, which manufactures modular reactors that convert solid waste into clean syngas
Kenya-based FelixFusion, which uses its Felix platform to model every grid connection point, including capacity, upgrade costs, and constraints
San Diego-based Gemini Energy, which builds next-generation fuel cells for data-center power
Tokyo-based Hibot, which develops robotic systems for inspecting and maintaining infrastructure in hazardous, hard-to-access environments
Austin-based Sheetak, which designs and manufactures thermoelectric coolers, generators, and assemblies for solid-state cooling and energy harvesting
The Netherlands-based ToPerform, which makes AI-powered, non-intrusive fouling sensors that monitor pipelines around the clock and predict the optimal cleaning time

Another 16 startups joined Greentown's Boston incubator. See the full list of new members here.

More than 100 startups joined Greentown last year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter. Read more about them here.

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