Josh Posamentier, co-founder and managing partner at Congruent Ventures, will join Venture Houston as a speaker this year. Photo via congruentvc.com

It's been a challenging year for venture capital, but how are climatetech startups doing specifically? One Bay Area investor shares his point of view on this this topic ahead of Venture Houston next week.

Joshua Posamentier, co-founder and managing partner of Congruent Ventures, a San Francisco-based firm that invests in early-stage sustainable companies, is taking the stage at Venture Houston on September 7. Among others, Posamentier will be in conversation with the founder of one of his firm's portfolio companies, Fervo Energy, discussing seed and early-stage funding for sustainability-focused startups.

Venture Houston is presented by HX Venture Fund, a fund of funds that deploys capital into non-Houston firms to encourage investment in local startups. This year's theme is "Spotlighting the path for decarbonization in a digital world."

Posamentier, who has worked over a decade in this space, shares some of his thoughts on Houston as an energy transition leader, the challenges climate-tech startups face, and more in an interview with EnergyCapital.

EnergyCapital: How do you see Houston and its role in this energy transition, its challenges, its opportunities, etc.?

Josh Posamentier: I actually tend to disagree with the people that say Houston is too far down the oil and gas path. I mean, it's it's capitalism at the end of the day. There's money to be made in in climate mitigation technologies. People are going to go chase it, and I think Houston, of all places, is a pretty capitalistic city. And people are definitely not shy about chasing the next big opportunity. I mean, it was oil and natural gas before, and now it's now it's alternative energy. And so I think from that perspective, it's fine. There's a lot of money.

I think the biggest challenge is honestly, especially on a perception basis, a lot of the policy and social stuff that's endemic to Texas, which is a bummer. I mean, especially for younger talent. Austin had a shine, but I think that's largely gone and Houston never had it. So, I think it's something that needs to be overcome and needs to be thought about at a state level basis, especially if you're going to want to attract young entrepreneurial talent.

EC: What are some of the challenges energy transition startups are facing these days? How is your fund kind of supporting your portfolio companies through these challenges?

JP: There's some normalization that's had to happen over the last 9 to 12 months. As you know, corrections have come down the pipe in the venture ecosystem. By all accounts, it has been really frothy for the last few years, especially so in parts of climate. Some of that's due to the the proliferation of investment from non climate-specific firms. And it's, in many ways, decoupled from the ups and downs of different parts of the venture ecosystem, but it also has different timelines. I think not everyone always appreciates what that means and what that implies for for startups. So there's a lot of frustration and a lot of missed expectations in the early stage part of the ecosystem that are slowly getting fixed. I think getting expectations more in line with reality is going to help immensely.

The other thing is just figuring out how to talk more in a language that venture investors understand. I think that's a little bit of a challenge. There's there's actually a pretty big gap between if you're an oil and gas developer and thinking about how you fund that kind of a business versus how you fund a technology-enabling business. Fervo Energy is an interesting example. It's a tech company, but now it's really a tech enabled developer because they have no choice but to do that full stack. They went to school out here. They understand the ecosystem. They've really taken the effort to really understand all the capital players. And so we're waiting to see how that ultimately plays out.

But there's just different capital. I think it is a little challenging. And this is a good thing. There does need to be a way, I think, to just get people more exposure to to the market there — in the Houston market specifically. If you're spinning at Stanford, there are hundreds of VCs within walking distance. In Houston, the ones I know I can count on one hand.

EC: Has that pace of commercialization changed over the years or have founders found ways to survive that valley of death?

JP: I don't think anything's really changed fundamentally. I think people have gotten a little more clever about understanding how the adoption occurs, and figuring out how to phase into those processes that that comes with experience. But there's only so much acceleration you can do when you're dealing with critical infrastructure. You know, people are not going to want to just jump right in, rip out, and replace things that keep the lights on. And so you just have to figure out how to how to capitalize a business in such a way that you can you can live with those kinds of timelines. Venture capital is a fantastic tool, and it is far from the right tool for every problem. And so there are plenty of opportunities to deploy other tools that are more appropriate to different kinds of different kinds of challenges.

EC: What attracted you to investing in Fervo Energy?

JP: So, it's how we think about portfolio construction. Fervo has an amazing team, which we will bend a lot of rules for, and we saw this opportunity as something they could build a ton of value by validating the tech, establishing a huge land position, and then raising different kinds of capital for the out years and for the project development. A bunch of our companies took venture capital to develop a technology, and then they know that venture is not the right class of capital to then scale that throughout the world and whatever. So they would basically raise other forms of capital in the out years to deploy the technologies.

EC: And one of those options is government funding. How do your portfolio companies utilize that?

JP: A big chunk of our portfolio has some government money, even if it's very early stage research grants or something like that. I see government money being the most effective in a couple of ways. One way obviously is to get the core research out of it versus just spin it into something more commercial that we can all then look at.

The other place that is really exciting is in is getting technologies to scale where they're then cost effective without further subsidies. When we underwrite companies, we are very explicitly underwriting them in the absence of subsidies at scale. The assumption is those are just there to basically bridge the gap between "this is totally uneconomic because it's a tiny, tiny little factory or something" versus "it would be plenty economic if it were a big factory." So, if they can just bridge that gap with a little bit of government money.

We've been through this this cycle a couple of times, and we can't in good faith underwrite anything assuming that government subsidies are going to continue. We very much believe it's a bridge — it's got to be a bridge to something. It can't be a bridge to nowhere. And I think there are a lot of companies out there today that are almost designed to just pump the government incentives, and that's not a recipe for a business that can grow on its own over time.

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This conversation has been edited for brevity and clarity.

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Houston startup advances methane tech, sets sights on growth capital

making milestones

Houston-based climatech startup Aquanta Vision achieved key milestones in 2025 for its enhanced methane-detection app and has its focus set on future funding.

Among the achievements was the completion of the National Science Foundation’s Advanced Sensing and Computation for Environmental Decision-making (ASCEND) Engine. The program, based in Colorado and Wyoming, awarded a total of $3 million in grants to support the commercialization of projects that tackle critical resilience challenges, such as water security, wildfire prediction and response, and methane emissions.

Aquanta Vision’s funding went toward commercializing its NETxTEN app, which automates leak detection to improve accuracy, speed and safety. The company estimates that methane leaks cost the U.S. energy industry billions of dollars each year, with 60 percent of leaks going undetected. Additionally, methane leaks account for around 10 percent of natural gas's contribution to climate change, according to MIT’s climate portal.

Throughout the months-long ASCEND program, Aquanta Vision moved from the final stages of testing into full commercial deployment of NETxTEN. The app can instantly identify leaks via its physics-based algorithms and raw video output of optical gas imaging cameras. It does not require companies to purchase new hardware, requires no human intervention and is universally compatible with all optical gas imaging (OGI) cameras. During over 12,000 test runs, 100 percent of leaks were detected by NETxTEN’s system, according to the company.

The app is geared toward end-users in the oil and gas industry who use OGI cameras to perform regular leak detection inspections and emissions monitoring. Aquanta Vision is in the process of acquiring new clients for the app and plans to scale commercialization between now and 2028, Babur Ozden, the company’s founder and CEO, tells Energy Capital.

“In the next 16 months, (our goal is to) gain a number of key customers as major accounts and OEM partners as distribution channels, establish benefits and stickiness of our product and generate growing, recurring revenues for ourselves and our partners,” he says.

The company also received an investment for an undisclosed amount from Marathon Petroleum Corp. late last year. The funding complemented follow-on investments from Ecosphere Ventures and Odyssey Energy Advisors.

Ozden says the funds will go toward the extension of its runway through the end of 2026. It will also help Aquanta Vision grow its team.

Ozden and Marcus Martinez, a product systems engineer, founded Aquanta Vision in 2023 and have been running it as a two-person operation. The company brought on four interns last year, but is looking to add more staff.

Ozden says the company also plans to raise a seed round in 2027 “to catapult us to a rapid growth phase in 2028-29.”

HETI discusses Houston’s energy leadership, from pathways to progress

The View From HETI

In 2024, RMI in collaboration with Mission Possible Partnership (MPP) and the Houston Energy Transition Initiative (HETI) mapped out ambitious scenarios for the region’s decarbonization journey. The report showed that with the right investments and technologies, Houston could achieve meaningful emissions reductions while continuing to power the world. That analysis painted a picture of what could be possible by 2030 and 2050.

Today, the latest HETI progress report shows Houston is not just planning anymore — the region is delivering.

Real results, right now

The numbers tell a compelling story. Since 2017, HETI’s member companies have invested more than $95 billion in low-carbon infrastructure, technologies, and R&D. That’s not a commitment for the future—that’s capital deployed, projects built, and operations transformed.

The results showed industry-wide reductions of 20% in total Scope 1 greenhouse gas emissions and a remarkable 55% decrease in methane emissions from global operations. These aren’t projections—they’re actual reductions happening across refineries, chemical plants, and production facilities throughout the Houston region.

How Houston is leading

What makes Houston’s approach work is its practical, technology-driven focus. Companies across the energy value chain are implementing solutions that work today:

  • Electrifying operations and integrating renewable power
  • Deploying advanced methane detection and elimination technologies
  • Upgrading equipment for greater efficiency
  • Capturing and storing carbon at commercial scale
  • Developing breakthrough technologies from geothermal to advanced nuclear

Take ExxonMobil’s Permian Basin electrification, Shell and Chevron’s lower-carbon Whale project, or BP’s massive Tangguh carbon capture project in Indonesia. These aren’t pilot programs—they’re multi-billion dollar investments demonstrating that decarbonization and energy production go hand in hand.

From scenarios to strategy

The RMI analysis identified three key pathways forward: enabling operational decarbonization, accelerating low-carbon technology scale-up, and creating carbon accounting mechanisms. Houston’s energy leaders have embraced all three.

The momentum is undeniable. Companies are setting ambitious 2030 and 2050 targets with clear roadmaps. New projects are reaching final investment decisions. Innovation ecosystems are flourishing. And critically, this progress is creating jobs and driving economic growth across the region.

Why this matters

Houston isn’t just managing the energy transition—it’s proving what’s possible when you combine world-class engineering expertise, integrated infrastructure, access to capital, and a commitment to both energy security and emissions reduction.

The dual challenge of delivering more energy with less emissions isn’t theoretical in Houston—it’s operational reality. Every ton of CO₂ reduced, every efficiency gain achieved, and every technology deployed demonstrates that we can meet growing global energy demand while making measurable progress on climate goals.

The path forward

The journey from last year’s scenarios to this year’s results shows something crucial: when industry, policymakers, and communities align around practical solutions, transformation accelerates.

Houston’s energy leadership isn’t about choosing between reliable energy and environmental progress, it’s about delivering both. And based on the progress we’re seeing, the momentum is only building.

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Read the full analysis here. This article originally appeared on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

TotalEnergies to supply solar power to new Google data centers in Texas

power deal

French energy company TotalEnergies, whose U.S. headquarters are in Houston, has signed power purchase agreements to supply 1 gigawatt of solar power for Google data centers in Texas over a 15-year span.

The power will be generated by TotalEnergies’ two solar farms that are being developed in Texas. Construction on the company’s Wichita site (805 megawatt-peak, or MWp) and Mustang Creek site (195 MWp) is scheduled to start in the second quarter of this year.

Marc-Antoine Pignon, U.S. vice president for renewables at TotalEnergies, said in a press release that the 1-gigawatt deal “highlights TotalEnergies’ strategy to deliver tailored renewable energy solutions that support the decarbonization goals of digital players, particularly data centers.”

The deal comes after California-based Clearway, in which TotalEnergies holds a 50 percent stake, secured an agreement to supply 1.2 gigawatts of solar power to Google data centers in Texas and other states.

“Supporting a strong, stable, affordable grid is a top priority as we expand our infrastructure,” said Will Conkling, director of clean energy and power at Google. “Our agreement with TotalEnergies adds necessary new generation to the local system, boosting the amount of affordable and reliable power supply available to serve the entire region.”

TotalEnergies maintains a 10-gigawatt-capacity portfolio of onshore solar, wind and battery storage assets in the U.S., including 5 gigawatts in the territory served by the Electric Reliability Council of Texas (ERCOT).

Other clean energy customers of TotalEnergies include Airbus, Air Liquide, Amazon, LyondellBasell, Merck and Microsoft.