More than 40 startups joined Greentown Labs in the second half of 2025. Photo via GreentownLabs.com

More than 40 climatetech startups joined the Greentown Labs Houston community in the second half of 2025, 12 of which hail from the Bayou City.

The companies are among a group of nearly 70 total 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."

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This article originally appeared on EnergyCaptialHTX.com.

Houston joins major other Texas cities on the startup report. Photo via Getty Images

Houston hailed as one of America's 10 best cities for startups

Startup Report

Houston's favorable economic climate is enticing new opportunities for entrepreneurship and growth, and now the city is being hailed as the 7th-best U.S. city for starting a business.

The recognition comes in CommercialCafe's recent "Best Cities for Startups" report, published December 10. The study analyzed large U.S. cities across two population categories – cities with more than 1 million residents and cities with populations between 500,000 and 1 million residents. The report analyzed relevant metrics such as office or coworking costs, Kickstarter funding success, startup density, and survival rates, among others.

Across the biggest U.S. cities with over a million residents, Phoenix, Arizona landed on top as the No. 1 best place to start a new business.

The report's findings revealed 10.6 percent of all businesses in Houston are startups that have been active for less than a year. These new businesses have a survival rate of 64.5 percent, meaning just under two-thirds of all startups in the city will still be running up to five years after they were first established.

Over the last five years, the number of new businesses established in Houston has grown nearly 15 percent. CommercialCafe said new businesses in cities with high startup growth rates tend to "attract top talent" which can eventually lead to securing "vital funding for expansion."

Independent professionals – also known as freelancers – are another crucial resource for new businesses that may need "specialized services" for a fixed amount of time, the report said. Houston's freelance workforce has grown about 9 percent from 2019-2023, and the analysis found there were 97,295 freelancers working in Houston in 2023, compared to 89,528 in 2019.

"Generally, cities in the South and Southwest have experienced strong growth during the surveyed period, in contrast to California cities like Los Angeles and San Diego, where the share of freelancers and gig workers has either stagnated or slightly declined," the report said.

Houston boasts the second-cheapest office space rent nationally, the report found. The average asking price for a 1,000-square-foot workspace (for five employees) in the city added up to $27,124 annually. For startups that want greater flexibility for their workers, the annual cost for a coworking space for the same number of employees in Houston came out to $13,200, which is the fourth-most affordable rate in the U.S.

Other Texas cities with attractive economic environments for startups

Texas, as a whole, is one of the strongest states for starting a new business. Other than Houston, San Antonio (No. 2), Dallas (No. 3), and Fort Worth (No. 4) were also recognized among the top 10 best places to start a business in the category of U.S. cities with more than a million residents.

Austin topped a separate ranking of best cities to start a business with 500,000 to 1 million residents.

"Specifically, the Texas capital was the frontrunner for indicators that looked at the overall share of startups within the local economy, as well as growth rates in five years (2019 to 2023)," the report said. "On top of that, Austin also topped the rankings for its percentage of college-educated residents and its consulting firms, which provide vital support for burgeoning enterprises."

The top 10 best cities to start a new business are:

  • No. 1 – Phoenix, Arizona
  • No. 2 – San Antonio, Texas
  • No. 3 – Dallas, Texas
  • No. 4 – Fort Worth, Texas
  • No. 5 – Jacksonville, Florida
  • No. 6 – San Diego, California
  • No. 7 – Houston, Texas
  • No. 8 – Philadelphia, Pennsylvania
  • No. 9 – Chicago, Illinois
  • No. 10 – Los Angeles, California
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This article originally appeared on CultureMap.com.

Texas saw a 440 percent jump in business investments between 2019 and 2024, according to a new report. Photo via Getty Images

Texas tops ranking of best states for investors in new report

by the numbers

Texas ranks third on a new list of the best states for investors and startups.

Investment platform BrokerChooser weighed five factors to come up with its ranking:

  • 2024 Google search volume for terms related to investing
  • Number of investors
  • Number of businesses receiving investments in 2024
  • Total amount of capital invested in businesses in 2024
  • Percentage change in amount of investment from 2019 to 2024

Based on those figures, provided mostly by Crunchbase, Texas sits at No. 3 on the list, behind No. 1 California and No. 2 New York.

Especially noteworthy for Texas is its investment total for 2024: more than $164.5 billion. From 2019 to 2024, the state saw a 440 percent jump in business investments, according to BrokerChooser. The same percentages are 204 percent for California and 396 percent for New York.

“There is definitely development and diversification in the American investment landscape, with impressive growth in areas that used to fly under the radar,” says Adam Nasli, head analyst at BrokerChooser.

According to Crunchbase, funding for Texas startups is off to a strong start in 2025. In the first three months of this year, venture capital investors poured nearly $2.9 billion into Lone Star State companies, Crunchbase data shows. Crunchbase attributes that healthy dollar amount to “enthusiasm around cybersecurity, defense tech, robotics, and de-extincting mammoths.”

During the first quarter of this year, roughly two-thirds of VC funding in Texas went to just five companies, says Crunchbase. Those companies are Austin-based Apptronik, Austin-based Colossal Biosciences, Dallas-based Island, Austin-based NinjaOne, and Austin-based Saronic.

The service has been a smash success in Austin. Courtesy photo

Texas-based 'DoorDash for laundry' startup tumbles into Houston market

No Scrubs

Laundry may seem like an endless task that piles up, but a new service offers a solution to overwhelmed Houston families.

NoScrubs, an Austin-based home laundry pickup service has just expanded to Houston. Described by the company as "DoorDash — but for laundry," they wash customer's clothes at local laundromats and return them the same day, folded and ready to be put away.

The service took off like gangbusters in Austin, making an expansion to the state's largest city an obvious choice. It's not universal coverage just yet.

For now, only the following ZIP codes have NoScrubs service available: 77002, 77004, 77005, 77006, 77007, 77008, 77009, 77010, 77018, 77019, 77024, 77025, 77027, 77046, 77056, 77057, 77081, 77098, 77401, 77030, 77003.

A single pickup starts at $40 for 20 pounds of laundry, while the basic monthly subscription is $60 for two pickups. All services use hypoallergenic detergents.

The average American family spends about 240 hours a year on laundry, making it a very time-consuming chore. For people with disabilities, difficult work schedules, and other circumstances, it can be a real help, says co-founder Matt O'Connor.

"Some of our favorite customer stories simply revolve around saving people time when they have something challenging going on," he writes in an email. "For example, one customer reviewed NoScrubs saying 'So happy I could cry! (Partially because I'm pregnant and my emotions are heightened!)...1000% recommend if you have time restrictions or physical restrictions! ' So, whether it’s saving time, the affordability, or the pleasantly surprising turnaround time, NoScrubs has a variety of benefits for any customer."

NoScrubs is also a new opportunity for Houston's gig workers. Because there are no passengers, it can be a safer alternative to driving ride share for women and other people apprehensive about having strangers in their cars. As NoScrubs partners with local laundromats, drivers are also going to centralized locations rather than all over the map, leading to less wear and tear on their cars. The laundromats benefit as well, since NoScrubs loads are ones that would otherwise be done at home.

"Our model makes driving a tiny fraction of the time, so folks who don’t want to wear down their vehicles and spend a ton on gas love working at NoScrubs," added O'Connor.

Don't miss these May events — from an investor activation series to a crawfish cook-off. Photo courtesy Greentown Labs.

9 can't-miss Houston business and innovation events for May

where to be

There's a lot to learn this month at events around Houston. Hear from AI and energy experts or gain insights into how to tap into funding at informative panels or sessions.

Here are the Houston business and innovation events you can't miss in May and how to register. Please note: This article might be updated to add more events.

May 1 - Ion Block Party + 3rd Annual Crawfish Cookoff

Head to this special edition Block Party, featuring a crawfish cook-off competition among the Ion’s businesses. Competing teams include Ion/Rice Alliance, Transwestern, Black at Microsoft, United Protective Services, Nexus, PersonaAI, South Main Baptist, Late August, Lymbar and LickleLab/Sports Monkey.

This event is Thursday, May 1, from 4-7 p.m. at the Ion. Register here.

May 5 - Fireside Chat and Book Launch: ‘AI Made Simple: Results Made Real.’

Learn more about how AI is reshaping business and what leadership in the AI era looks like at the launch of Kathleen Perley’s book, AI Made Simple: Results Made Real, hosted by Rice Business Executive Education. Perley is founder and CEO of DemystifAI and an instructor and advisor at Rice University. She will sit down with Marie Myers, CFO of Hewlett Packard Enterprise, for a discussion and will be signing copies of her book after the fireside chat.

This event is Monday, May 5, from 5:30-7:30 p.m. at the Ion. Register here.

May 6 - Houston’s AI-Driven Data Center Boom: Investment, Innovation, and Policy

In light of Houston’s growing influence as a data center hub, the Greater Houston Partnership will present an informative panel focused on the investment landscape, technological advancements, and policy considerations shaping the future of AI-driven data centers in Houston. Panelists include leaders from Moelis, Quanta, and the Houston Northwest Chamber of Commerce.

This event is Tuesday, May 6, from 11:30 a.m.-1 p.m. at Partnership Tower. Register or become a member here.

May 6 - Doing Business with the Federal Government - The Woodlands

The SBA Houston District Office, in collaboration with Sam Houston State University SBDC, will host an informative session to share insights on how small business owners can work with the U.S. government. Topics include how the government buys goods and services, the SBA’s role in government contracting, federal government contracting programs, the advantages of small business set-asides, marketing your business, identifying federal opportunities and more.

This event is Tuesday, May 6, from 10-11:30 a.m. at Sam Houston State University - The Woodlands Center. Register here.

May 8 - Industrious Launch Party

Attend the opening of Industrious’ new coworking space at the Ion. Anteendees can tour the new space, meet the team, enjoy a silent disco and network. Light bites will be provided by Late August, Lymbar, and Stuff’d.

This event is Thursday, May 8, from 5-8 p.m. at the Ion. Register here

May 12 - Headshot Happy Hour 

Hosted by Natalie Presnediue, Headshot Happy Hour caters to entrepreneurs, business owners, creatives and professionals who want to enhance or update their online presence. Each session includes a 15- to 20-minute mini shoot and three professionally retouched images. Light refreshments will be served.

This event is Monday, May 12, at the Ion. Learn more here.

May 12-14 - Greentown Labs’ Investor Activation Series

Greentown Labs will host a three-day series for investors interested in climatetech, centered around the incubator’s invitation-only Manufacturing Sector Pitch Day. Panels throughout the event will focus on early-stage investment, emerging opportunities, and tools for investors, presented by organizations like Houston Angel Network and New Climate Ventures.

This event begins Monday, May 12, at Greentown Labs. Register here.

May 13 - Women in Venture Investing: Expanding Influence and Building Wealth

Houston Angel Network will host a luncheon focused on how women can enter and thrive in the venture capital space. Anthea Zhang, professor of strategic management at Rice University, will present the keynote address along with a panel featuring leaders from Hunton, JP Morgan Private Bank, HRSS CPAs, Weathergage Capital, and Houston Angel Network.

This event is Tuesday, May 13, from 11 a.m.-1:30 p.m. at the Junior Leauge of Houston. Get tickers here.

May 21-22 - Brain Capital: The New Competitive Advantage in a Shifting Economy

Tap into the potential of brain capital at this next-level summit. This dynamic two-day roundtable will assist visionary business leaders in unlocking the power of neuroscience, technology, and human capital to drive innovation and long-term prosperity.

This event begins Wednesday, May 21 at TMC3. Register here.

May 28-30 - CHARGE North America

This intimate, immersive experience is tailored to forward-thinking energy professionals. The conference includes hands-on interactive workshops led by top strategists; real-world case studies; and insights from leading speakers on resilient branding, consumer expectations, and climate action. Attendees will engage in panel discussions on sustainability and energy diversification and enjoy exclusive networking opportunities with global executives and innovators.

This event begins Wednesday, May 28, at the Ion. Register here.

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Rice scientist earns $600K NSF award to study distractions in digital age

fresh funding

Rice University psychologist Kirsten Adam has received a $600,000 National Science Foundation CAREER Award to research how visual distractions like phone notifications, flashing alerts, crowded screens and busy workspaces can negatively impact focus—and how the brain works to try to regain it.

The highly competitive five-year NSF grants are given to career faculty members with the potential to serve as academic models and leaders in research and education. Adam’s work will aim to clarify how the brain refocuses in the age of screens, instant gratification and other lingering distractions. The funding will also be used to train graduate students in advanced cognitive neuroscience methods, expand access to electroencephalography (EEG) and for public data sharing.

“Kirsten is a valued member of the School of Social Sciences, and we are thrilled that she has been awarded the prestigious NSF CAREER,” Rachel Kimbro, dean of social sciences, said in a news release. “Because distractions continue to increase all around us, her research is timely and imperative to understanding their widespread impacts on the human brain.”

In Adam’s lab, participants complete simplified visual search tasks while their brain activity is recorded using EEG, allowing researchers to measure attention shifts in real time. This process then captures the moment attention is drawn from a goal and how much effort it takes to refocus.

According to Rice, Adam’s work will test long-standing theories about distraction. The research is meant to have real-world implications for jobs and aspects of everyday life where attention to detail is key, including medical imaging, airport security screening and even driving.

“At any given moment, there’s far more information in the world than our brains can process,” Adam added in the release. “Attention is what determines what reaches our awareness and what doesn’t.”

Additionally, the research could inform the design of new technologies that would support focus and decision-making, according to Rice.

“We’re not trying to make attention limitless,” Adam added. “We’re trying to understand how it actually works, so we can stop designing environments and expectations that fight against it.”

Intuitive Machines forms partnership with Italian companies for lunar exploration services

to the moon

Houston-based space technology, infrastructure and services company Intuitive Machines has forged a partnership with two Italian companies to offer infrastructure, communication and navigation services for exploration of the moon.

Intuitive Machines’ agreement with the two companies, Leonardo and Telespazio, paves the way for collaboration on satellite services for NASA, a customer of Intuitive Machines, and the European Space Agency, a customer of Leonardo and Telespazio. Leonardo, an aerospace, defense and security company, is the majority owner of Telespazio, a provider of satellite technology and services.

“Resilient, secure, and scalable space infrastructure and space data networks are vital to customers who want to push farther on the lunar surface and beyond to Mars,” Steve Altemus, co-founder and CEO of Intuitive Machine, said in a news release.

Massimo Claudio Comparini, managing director of Leonardo’s space division, added that the partnership with Intuitive Machines is a big step toward enabling human and robotic missions from the U.S., Europe and other places “to access a robust communications network and high-precision navigation services while operating in the lunar environment.”

Intuitive Machines recently expanded its Houston Spaceport facilities to ramp up in-house production of satellites. The company’s first satellite will launch with its upcoming IM‑3 lunar mission.

Intuitive Machines says it ultimately wants to establish a “center of space excellence” at Houston Spaceport to support missions to the moon, Mars and the region between Earth and the moon.

Houston hospitals win $50M grant for ibogaine addiction treatment research

ibogaine funding

The Texas Health and Human Services Commission has awarded $50 million to UTHealth Houston in collaboration with The University of Texas Medical Branch at Galveston (UTMB Health) to co-lead a multicenter research trial to evaluate the effect of ibogaine, a powerful psychoactive compound, on patients suffering from addiction, traumatic brain injury and other behavioral health conditions.

The funding will establish a two-year initiative—known as Ibogaine Medicine for PTSD, Addiction, and Cognitive Trauma (IMPACT)—and a consortium of Texas health institutions focused on clinical trials and working toward potential FDA-approved treatments.

The consoritum will also include Texas Tech University, Texas Tech University Health Sciences Center El Paso, The University of Texas at Austin, The University of Texas Health Science Center at San Antonio, The University of Texas at Tyler, The University of Texas Rio Grande Valley, Texas A&M University, The University of North Texas Health Science Center, Baylor College of Medicine and JPS Health Network in Dallas.

Ibogaine is a plant-based, psychoactive substance derived from the iboga shrub. Research suggests that the substance could be used for potential treatment for patients with traumatic brain injuries, which is a leading cause of post-traumatic stress disorders. Ibogaine has also shown potential as a treatment for addiction and other neurological conditions.

UTHealth and partners will focus on ways that ibogaine can treat addiction and associated conditions. Meanwhile, UT Austin and Baylor College of Medicine will concentrate on using it to treat traumatic brain injury, especially in veterans, according to a news release from the institutions.

The consortium will also support drug developers and teaching hospitals to conduct FDA-approved clinical trials. The Texas Health and Human Services Commission will oversee the grant program.

“This landmark clinical trial reflects our unwavering commitment to advancing research that improves lives and delivers the highest standards of care,” Dr. Melina Kibbe, UTHealth Houston president and the Alkek-Williams Distinguished Chair, said in the news release. “By joining forces with outstanding partners across our state, we are building on Texas’ tradition of innovation to ensure patients struggling with addiction and behavioral health conditions have access to the best possible outcomes. Together, we are shaping discoveries that will serve Texans and set a model for the nation.”

The consortium was authorized by the passage of Senate Bill 2308. The bill provides $50 million in state-matching funds for an ibogaine clinical trial managed by a public university in partnership with a drug company and a hospital.

“This is the first major step towards the legislature’s goal of obtaining FDA approval through clinical trials of ibogaine — a potential breakthrough medication that has brought thousands of America’s war-fighters back from the darkest parts of depression, anxiety, PTSD, and chronic addiction,” Texas Rep. Cody Harris added in the release. “I am excited to walk alongside UTHealth Houston and UTMB as these stellar institutions lead the nation in a first-of-its-kind clinical trial in the U.S.”

Recently, the University of Houston also received a $2.6 million gift from the estate of Dr. William A. Gibson to support and expand its opioid addiction research, which includes the development of a fentanyl vaccine that could block the drug's ability to enter the brain. Read more here.