Jeremy Pitts of Activate joins the Houston Energy Transition Initiative for a Q&A. Photo via LinkedIn

Founded in 2015, Activate Global Inc. is a 501(c)3 nonprofit organization that partners with US-based funders and research institutions to support scientists at the outset of their entrepreneurial journey by providing personalized expertise, tools, and resources that may otherwise be inaccessible. The organization recently launched its fifth community in Houston, and just closed the application window for the 2024 Activate Fellowship Cohort.

We recently connected with energy industry veteran and Activate Houston Managing Director Jeremy Pitts to learn more about how Activate is empowering scientists and engineers as they pave the way to a low-carbon future.

HETI: Activate was founded in 2015 and has established fellowship programs in Silicon Valley, Boston, New York, and a remote Anywhere Community. Why was Houston the next logical choice for an Activate Community?   

Jeremy Pitts: There is no doubt that Houston is going to be a major player in the energy transition, so it’s a logical place for Activate to be as we do our part to help bring ground-breaking technology out of the lab and deploy it to solve the world’s biggest challenges.

Houston is already the best place to scale a company working on the types of hard tech solutions that Activate focuses on. Houston has the talent, capital, and resources to build and deploy things at the scale needed to have a global impact. There is a good chance that many of our current Activate companies and alumni will end up in Houston as they pursue their scale-up plans. Activate alum Tim Latimer and Fervo Energy are great examples of this.

Houston is also an interesting fit for Activate as we believe we can fill a gap in the current ecosystem by providing support for entrepreneurs at the earliest stages of their journey. By providing funding and support, we can keep those entrepreneurs in Houston as opposed to moving to the coasts. We are hopeful that not only can we directly support a small number of the most promising entrepreneurs, but we can indirectly support many more by creating an ecosystem where early-stage capital starts to find its way to Houston to support these revolutionary and impactful technologies.

HETI: Activate Communities work closely with climate tech programs at leading colleges and universities, including UC Berkeley, U Mass Boston, and Columbia University. What can you tell us about Activate Houston’s plans for collaboration with area colleges and universities?

JP: Activate’s goal is to be as inclusive as possible. One of our main goals is to find fellows who we can have as big of an impact on as possible, potentially being the difference between whether they are successful or not. To that end, we plan to partner and engage with all of the research institutions across Houston and the surrounding areas. In just our first few months of being on the ground in Houston and recruiting for our first cohort, we have already engaged with Rice, UH, Prairie View A&M, TSU, Texas A&M, UT, and the Texas Medical Center. We have also begun outreach and preliminary conversations with institutions outside of the Houston area, like UT Dallas, SMU, Baylor, UTEP, etc. Our goal is to find the most promising entrepreneurs and the most impactful technologies that we can help and support, regardless of where they come from.

We will also be looking to engage with some of these institutions to make resources available to our fellows to support the research they are doing once in the Activate program. These conversations are in the early stages, but the facilities at UH Technology Bridge and TMC’s Innovation Factory are great examples of how the Houston ecosystem can support our fellows.

HETI: How do fellowships like Activate differ from traditional accelerator programs and why are they such an important component of the energy transition?

JP: Accelerators in general are a great resource for entrepreneurs to quickly learn the fundamentals around building a company and gain access to a network of investors, mentors, and partners that they would have trouble accessing on their own.

While Activate has a lot of overlap with accelerators in terms of what we provide, we classify ourselves as a fellowship and not an accelerator. The reasons for this primarily lie in the fact that we are a non-profit. This allows us to do a few things different from traditional accelerators. First, our program does not charge any fees or equity. Because our success is not tied to the financial outcomes of the companies, we are able to take much bigger risks in terms of the technology we support and we are also able to take a fellow first approach, as sometimes the best outcome for the fellow as a person is not the best financial outcome for the company. Second, we are much more patient, offering a full two years of support for our fellows and continuing to support our alumni community after they have left the program.

Activate’s unique fellowship program can play an essential role because many of the technologies and breakthroughs necessary to solve the world’s biggest challenges are really hard. It can take a long time to develop these technologies and often they are too risky and unproven at the early stages to be able to attract the capital they need to turn the technology into a commercial solution. Activate can support these hard technologies and provide a two-year safety net for our fellows as they work through those early challenges and progress their solution to a point that the private markets will support the business coming out of our program. We have been quite successful with this approach thus far, as the 145 companies we have created have raised nearly $1.4B in follow-on funding, representing a 23X multiplier on the funds Activate has directly deployed to support the fellows.

HETI: You’re the co-founder of Greentown Labs, now the nation’s biggest climate tech incubator. How does that experience help in your new role as MD at Activate Houston?

JP: The biggest takeaway for me from my time building Greentown is the power of community. Early-stage deep tech founders face monumental challenges. Having a community of like-minded individuals nearby who are facing their own similar challenges and serve as both a support network and a sounding board to help work through those challenges can be the difference between success and failure. I hope to leverage those learnings to really focus on Activate Houston being an incredibly strong community where the founders can lean on each other, and me, for the support they need.

In addition, Greentown also serves as a gathering place for bringing the larger climate community together, which is so vital in pushing forward the energy transition. In the early days of Greentown, those events happened on an almost ad hoc basis, as there wasn’t previously a place for people interested in climate to gather. Greentown has changed a lot over the years – the facilities are quite a bit nicer than where we started – but it has done an amazing job continuing to fill that role as the center of the climate ecosystem and bringing together a community of like-minded individuals. Anyone who attended the recent Greentown Climatetech Summit and experienced the standing-room-only crowds of passionate people can attest to that. Certainly, Greentown already fills that role for Houston and does it well, but my experience with the power of community will lead me to lean into Houston’s climate community and encourage our fellows to do the same, to be active members in strengthening the entire climate and innovation ecosystem in Houston. All boats rise together in the rising sea that is Houston’s climate and innovation ecosystem.

HETI: What are you most looking forward to with the upcoming launch of Houston’s 2024 Cohort?

JP: I’m looking forward to getting started – welcoming our first cohort into Houston and showing the rest of the country that Houston can hold its own when it comes to hard tech and world-changing innovation.

———

This article originally ran 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.

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40+ climatetech startups join Greentown, including a dozen from Houston

green team

More than 40 climatetech startups joined the Greentown Labs Houston community in the second half of 2025. Twelve hail from the Bayou City.

The companies are among a group of nearly 70 that joined the climatetech incubator, which is co-located in Houston and Boston, in Q3 and Q4.

The new companies that have joined the Houston incubator specialize in a variety of clean energy applications, from green hydrogen-producing water-splitting cycles to drones that service wind turbines.

The local startups that joined Greentown Houston include:

  • Houston-based Wise Energie, which delivers turnkey microgrids that blend vertical-axis wind, solar PV, and battery storage into a single, silent system.
  • The Woodlands-based Resollant, which is developing compact, zero-emissions hydrogen and carbon reactors to provide low-cost, scalable clean hydrogen and high-purity carbon for the energy and manufacturing sectors.
  • Houston-based ClarityCastle, which designs and manufactures modular, soundproof work pods that replace traditional drywall construction with reusable, low-waste alternatives made from recycled materials.
  • Houston-based WattSto Energy, which manufactures vanadium redox flow batteries to deliver long-duration storage for both grid-scale projects and off-grid microgrids.
  • Houston-based AMPeers, which delivers advanced, high-temperature superconductors in the U.S. at a fraction of traditional costs.
  • Houston-based Biosimo, which is developing bio-based platform chemicals, pioneering sustainable chemistry for a healthier planet and economy.
  • Houston-based Ententia, which offers purpose-built, generative AI for industry.
  • Houston-based GeoKiln Energy Innovation, which is developing a new way to produce clean hydrogen by accelerating natural geologic reactions in iron-rich rock formations using precision electrical heating.
  • Houston-based Timbergrove, which builds AI and IoT solutions that connect and optimize assets—boosting visibility, safety, and efficiency.
  • Houston-based dataVediK, which combines energy-domain expertise with advanced machine learning and intelligent automation to empower organizations to achieve operational excellence and accelerate their sustainability goals.
  • Houston-based Resonant Thermal Systems, which uses a resonant energy-transfer (RET) system to extract critical minerals from industrial and natural brines without using membranes or grid electricity.
  • Houston-based Torres Orbital Mining (TOM),which develops autonomous excavation systems for extreme environments on Earth and the moon, enabling safe, data-driven resource recovery and laying the groundwork for sustainable off-world industry.

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

More than 100 startups joined Greentown this year, according to an end-of-year reflection shared by Greentown CEO Georgina Campbell Flatter.

Flatter joined Greentown in the top leadership role in February 2025. She succeeded former CEO and president Kevin Knobloch, who stepped down in July 2024.

"I moved back to the United States in March 2025 after six years overseas—2,000 miles, three children, and one very patient husband later. Over these months, I’ve had the chance to hear from the entrepreneurs, industry leaders, investors, and partners who make this community thrive. What I’ve experienced has left me brimming with urgent optimism for the future we’re building together," she said in the release.

According to Flatter, Greentown alumni raised more than $2 billion this year and created more than 3,000 jobs.

"Greentown startups and ecosystem leaders—from Boston, Houston, and beyond—are showing that we can move further and faster together. That we don’t have to choose between more energy or lower emissions, or between increasing sustainability and boosting profit. I call this the power of 'and,'" Flatter added. "We’re working for energy and climate, innovation and scale, legacy industry and startups, prosperity for people and planet. The 'and' is where possibility expands."

NRG makes latest partnership to grow virtual power plant

VPP partners

Houston-based NRG Energy recently announced a new long-term partnership with San Francisco-based Sunrun that aims to meet Texas’ surging energy demands and accelerate the adoption of home battery storage in Texas. The partnership also aligns with NRG’s goal of developing a 1-gigawatt virtual power plant by connecting thousands of decentralized energy sources by 2035.

Through the partnership, the companies will offer Texas residents home energy solutions that pair Sunrun’s solar-plus-storage systems with optimized rate plans and smart battery programming through Reliant, NRG’s retail electricity provider. As new customers enroll, their stored energy can be aggregated and dispatched to the ERCOT grid, according to a news release.

Additionally, Sunrun and NRG will work to create customer plans that aggregate and dispatch distributed power and provide electricity to Texas’ grid during peak periods.

“Texas is growing fast, and our electricity supply must keep pace,” Brad Bentley, executive vice president and president of NRG Consumer, said in the release. “By teaming up with Sunrun, we’re unlocking a new source of dispatchable, flexible energy while giving customers the opportunity to unlock value from their homes and contribute to a more resilient grid

Participating Reliant customers will be paid for sharing their stored solar energy through the partnership. Sunrun will be compensated for aggregating the stored capacity.

“This partnership demonstrates the scale and strength of Sunrun’s storage and solar distributed power plant assets,” Sunrun CEO Mary Powell added in the release. “We are delivering critical energy infrastructure that gives Texas families affordable, resilient power and builds a reliable, flexible power plant for the grid.”

In December, Reliant also teamed up with San Francisco tech company GoodLeap to bolster residential battery participation and accelerate the growth of NRG’s virtual power plant network in Texas.

In 2024, NRG partnered with California-based Renew Home to distribute hundreds of thousands of VPP-enabled smart thermostats by 2035 to help households manage and lower their energy costs. At the time, the company reported that its 1-gigawatt VPP would be able to provide energy to 200,000 homes during peak demand.