Katie Mehnert reflects on the progress Houston has made within the energy transition and future of work following her experience ringing the bell at the New York Stock Exchange. Photo courtesy of ALLY

As I stood on the platform at the world’s largest stock exchange to ring the closing bell, surrounded by 130 people from across the energy industry, I saw it clearly: how the private sector will play a major role in getting us to an era of net zero. The people who power the energy industry will do the hard work. We’ve already begun. And we’re unafraid of the long journey ahead — something more than 40 of us exemplified that weekend by running a marathon.

The trip to New York City days ago was an exhilarating whirlwind. But it was also something much more: A chance to show the markets, the nation, and the world that Houston is leading the energy transition. (It didn’t hurt that we popped up on Good Morning America.)

From the beginning, the idea behind this pair of events — ringing the bell at the New York Stock Exchange and running the TCS New York City Marathon — was aimed at sending crucial messages. That recognizing climate change and building solutions is an obligation and an opportunity. That the energy industry understands this. That investors have good reason to support climate tech, one of the most exciting and fastest growing sectors. And, last but not least, that people’s perceptions of Houston as being all about oil and gas are simply wrong.

The dozens of us who gathered came from across the country and around the world, But by far, the largest contingent was from right here in Houston. Executives, engineers, entrepreneurs, and other innovators took part. People spearheading projects in every facet of energy, from wind to solar, carbon capture, and other methods of dramatically reducing carbon emissions. All as one team.

Those who traveled from “the energy capital” knew how important it was to highlight our Houston pride. As a new report from the Texas Climate Tech Collective points out, the biggest problem in the city’s climate tech ecosystem is its image. “Outsider perceptions of Houston often draw on negative stereotypes,” the report explains. “The number one disadvantage survey respondents chose – even more than access to VC capital – was Houston’s anti-climate reputation outside the state.”

It’s a problem I’ve been trying to combat for years, including through op-eds in national and international media outlets. Fortunately, the idea is starting to get through. Just days ago, the Financial Times reported that Houston claimed the top spot in this year’s FT-Nikkei Investing in America rankings by “moving beyond oil.” Our city, the paper said, “has become a hub for green energy innovation by building on its hydrocarbon past.”

Houston, and Texas a whole, should be immensely proud of this. But the energy industry has a long history of failing to tell its own stories. It’s time to change that. In fact, the recommendations in the collective’s report include “campaigning to improve Houston’s reputation, improving promotion of Houston’s energy transition initiatives and accomplishments, educating politicians and consumers, reversing anti-climate perception.”

Photo courtesy of ALLY

Building bridges

All of the challenges we face, including the perception problem, will only be overcome if we work together. So the era of siloes must end. Climate change is an “all hands on deck” situation. This means companies large and small, as well as businesses focusing on all forms of energy, need to develop a “one-team” mentality.

We also need to step up our engagement with public sector entities. A great deal of public sector investment is being poured into renewable energy programs. Since I’ve served as an ambassador to the Department of Energy’s Equity in Energy initiative and a member of the National Petroleum Council, I’ve met many people in government who are eager to cooperate with us to help ensure that the United States leads the way in the energy transition.

The need for building these kinds of bridges is another reason that many of the participants in our Women & Allies in Energy team saw the New York City marathon as such a strong metaphor. It’s known for its bridges. And having run across all of them — and stopped for a quick selfie on the toughest one of all, the Queensboro Bridge — I’m reminded of their importance. I was happy to see that another recommendation in the collective’s report speaks directly to this. It calls for, “Building bridges between public and private, energy corporates and startups, universities and startups, and startups and mentors; seeking partnerships with other ecosystems; improving resources for early stage startups.”

We also need to build bridges among groups of people. More than ever, the industry needs diversity, equity and inclusion. (See my recent piece for Fast Company about why the C-Suite should double down, not shy away from, DEI.) We need to welcome people with all sorts of backgrounds, experiences, and perspectives. The greatest form of capital the energy sector has in building the future is not financial. It’s human capital. And the greatest natural resource we have is not one form of energy. It’s the people whose hard work, creativity, collaboration, and grit will get us to the finish line.

To help make all this happen, I’m calling for Houston to come together on climate change. Capitalizing on the annual Climate Week in New York City, and building on an event the City of Houston organized in 2021, let’s bring all industries and all people together next fall to show that we recognize climate reality, and are ready to take action together.

The next generation

While I did have the chance to lead the delegation at the NYSE closing bell, I did not hold the gavel — at least, not by myself. Instead, I handed it to my 12-year-old daughter, Ally. (Yes, her name is a big part of the inspiration behind our company name, ALLY Energy.)

As leaders in energy, we have to keep our eyes firmly focused on the next generation. This means not only giving them a strong supply of energy and healthier conditions on the planet. It also means giving them future job opportunities.

It’s up to us to build the pipeline for future talent. We need to improve STEAM (science, technology, engineering, arts and math) education. And we need to demonstrate to people who are currently underrepresented in our industry — such as women and members of minority groups — that they have a future in the world’s most exciting industry.

We can do this. We can get out of our bubble, show our Houston pride to the world, and lead the way to “energy 2.0” — an era of plentiful energy supplies and net-zero emissions. After all, dozens of us have returned from New York City with a mission: capitalize on all that momentum, join together as a team, and run the race to net zero.

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Katie Mehnert is founder and CEO of Ally Energy, a Houston-based talent and culture platform for the energy industry and 2023 Houston Innovation Award recipient.

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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.