Houston-based Sage Geosystems announced the first close of $17 million round led by Chesapeake Energy Corp. Photo via sagegeosystems.com

A Houston geothermal startup has announced the close of its series A round of funding.

Houston-based Sage Geosystems announced the first close of $17 million round led by Chesapeake Energy Corp. The proceeds aim to fund its first commercial geopressured geothermal system facility, which will be built in Texas in Q4 of 2024. According to the company, the facility will be the first of its kind.

The venture is joined by technology investor Arch Meredith, Helium-3 Ventures and will include support from existing investors Virya, LLC, Nabors Industries Ltd., and Ignis Energy Inc.

“The first close of our Series A funding and our commercial facility are significant milestones in our mission to make geopressured geothermal system technologies a reality,” Cindy Taff, CEO of Sage Geosystems, says in a news release. “The success of our GGS technologies is not only critical to Sage Geosystems becoming post-revenue, but it is an essential step in accelerating the development of this proprietary geothermal baseload approach.

"This progress would not be possible without the ongoing support from our existing investors, and we look forward to continuing this work with our new investors," she continues.

The 3-megawatt commercial facility will be called EarthStore and will use Sage’s technology that harvests energy from pressurized water from underground. The facility will be able to store energy — for short and long periods of time — and can be paired with intermittent renewable energy sources like wind and solar. It will also be able to provide baseload, dispatchable power, and inertia to the electric grid.

In 2023, Sage Geosystems debuted the EarthStore system in a full-scale commercial pilot project in Texas. The pilot produced 200 kilowatt for more than 18 hours, 1 megawatt for 30 minutes, and generated electricity with Pelton turbines. The system had a water loss of less than 2 percent and a round-trip efficiency (RTE) of 70-75.

This week's roundup of Houston innovators includes Jai Shah of Kahuna, Cindy Taff of Sage Geosystems, and Patrick Flam of Revterra. Photos courtesy

3 Houston innovators to know this week

who's who

Editor's note: Each week, I'm introducing you to three Houston innovators to know — three individuals behind recent innovation and startup news stories in Houston as reported by InnovationMap. Learn more about them and their recent news below by clicking on each article.

Jai Shah, CEO of Kahuna Workforce Solutions

Kahuna CEO Jai Shah shares how he plans on deploying the $21 million his Houston company just raised. Photo courtesy of Kahuna

With a recent $21 million series B funding round set to fuel more growth and expand an impressive client roster, Kahuna Workforce Solutions is riding a big wave into 2024.

CEO Jai Shah tells InnovationMap that the Houston skills management software service company’s Hawaiian name captures their style.

“Kahuna is that kind of expert, competent leader in a tribe or family,” Jai says. “That’s all because we had this concept of really wanting to be providing a very..family-oriented consulting approach. Treat our customers like family, and with respect, love and really just try and deliver on that promise.” Continue reading.

Cindy Taff, CEO of Sage Geosystems

Cindy Taff of Sage Geosystems explains why she's so optimistic about geothermal and her company's technology. Photo courtesy of Sage

Geothermal energy is an integral part of decarbonizing the energy industry, and Sage Geosystems CEO Cindy Taff believes her company's tech has what it takes to lead the way.

Founded in Houston in 2020, Sage Geosystems is focused on two business lines — energy storage and geothermal. In addition to developing these technologies, Taff says Sage has "cracked the code" on both reducing costs and maximizing electricity output. Sage has customers ranging from Nabors, the world’s largest land-based drilling company, and Virya LLC, an investor in climate ventures with high impact of eliminating global greenhouse gas emissions or sequestering CO2. Continue reading.

Patrick Flam, CFO of Revterra

Revterra was selected from among 10 finalists receiving up to $1 million piloting opportunities. Photo via ADNOC

Revterra, which produces novel batteries made from recycled steel, has been awarded a million-dollar piloting opportunity by ADNOC following a global competition. The ADNOC Decarbonization Technology Challenge, in collaboration with AWS, bp, Hub71, and the Net Zero Technology Centre, sought to find emerging climate tech innovations that are ready for scale.

At the event in Dubai, Revterra was selected from among 10 finalists receiving up to $1 million piloting opportunities. In addition to the $1 million, they will gain access to facilities and expertise at the ADNOC Research and Innovation Center in Abu Dhabi.

“We are thrilled to win this opportunity,” Patrick Flam, CFO of Revterra, says in a news release. “At Revterra, we have developed an environmentally friendly battery that doesn’t rely on metals like lithium, nickel, or cobalt.” Continue reading.

Cindy Taff of Sage Geosystems explains why she's so optimistic about geothermal and her company's technology. Photo courtesy of Sage

Houston sustainability startup founder on why geothermal is a 'cornerstone' tech for energy transition

Q&A

Geothermal energy is an integral part of decarbonizing the energy industry, and Sage Geosystems CEO Cindy Taff believes her company's tech has what it takes to lead the way.

Founded in Houston in 2020, Sage Geosystems is focused on two business lines — energy storage and geothermal. In addition to developing these technologies, Taff says Sage has "cracked the code" on both reducing costs and maximizing electricity output. Sage has customers ranging from Nabors, the world’s largest land-based drilling company, and Virya LLC, an investor in climate ventures with high impact of eliminating global greenhouse gas emissions or sequestering CO2

In a Q&A that originally ran on EnergyCapital, she explains why she's so optimistic about geothermal and her company's technology.

EnergyCapital: Why do you believe geothermal has a major role to play in the energy transition?

Cindy Taff: Geothermal energy is not just a contender in the energy transition; it is a cornerstone. The question isn’t if we can drive down the costs to be competitive with wind, solar, and natural gas—it’s when. As renewable credits for solar and wind begin to expire, these industries will face the reality of their “real costs.”

As a 24/7 renewable energy source, it provides a constant and reliable power supply, unlike the intermittent nature of solar and wind. Moreover, the rising costs of lithium-ion batteries, driven by the increasing scarcity of lithium and cobalt, further underscore geothermal’s economic viability.

My extensive experience in both geothermal and the O&G sector is a testament to the synergistic relationship between these industries. The skills honed in O&G are not only transferable—they are essential to advancing geothermal technologies. In summary, the O&G industry can make a huge impact to geothermal by systematically driving down costs while scaling up, which is exactly what we did for unconventional shales.

EC: When it comes to finding partners or investors, what are you looking for? What should potential partners/investors know about Sage?

CT: Our technology is ready to scale today, not five to 10 years into the future. We will deliver our first energy storage power plant in 2024 and our first enhanced geothermal power plant in 2025. We are looking for synergies with investors, such as companies with power market or O&G expertise.

In addition, we seek to partner with others who have local content and relationships in places around the world to enable us to quickly and broadly scale our technologies. Sage's technologies are extremely flexible, in that we can deliver energy storage or enhanced geothermal to the utility grid or behind-the-meter to targeted commercial customers, including a dedicated microgrid (i.e., for the U.S. Air Force). Our technologies can provide electricity to remote locations such as mining operations or to large population centers such as Houston, and everything in between.

EC: What's the biggest challenge Sage is facing as an energy transition startup and how do you plan to tackle it?

CT: A common misunderstanding about Sage is that we only do energy storage or that we only do geothermal. However, we do both and the technologies build on one another. Essentially, our energy storage technologies will allow us to "walk" before we "run" with geothermal. On a related point, at this point in the energy transition, time to commercialization and affordability of new clean technology are the leading factors in terms of climate impact. As the first geothermal company to deliver a cost-effective commercial enhanced geothermal system, we are poised to truly make a meaningful difference.

EC: As a woman in a male-dominated industry tackling a global problem, what's been your biggest lesson learned? What's your advice to fellow energy tech female founders?

CT: In my journey as a woman in the energy tech industry, I’ve been fortunate to focus on the work and the global challenges we’re addressing, rather than on any gender-based obstacles. My biggest lesson learned is that innovation and leadership know no gender. Success is driven by perseverance, vision, and collaboration.

------

This conversation has been edited for brevity and clarity.

The six finalists for the sustainability category for the 2023 Houston Innovation Awards weigh in on their challenges overcome. Photos courtesy

Top Houston-based sustainability startups share their 4 biggest challenges

houston innovation awards

Six Houston-area sustainability startups have been named finalists in the 2023 Houston Innovation Awards, but they didn't achieve this recognition — as well as see success for their businesses — without any obstacles.

The finalists were asked what their biggest challenges have been. From funding to market adoption, the sustainability companies have had to overcome major obstacles to continue to develop their businesses.

The awards program — hosted by InnovationMap, and Houston Exponential — will name its winners on November 8 at the Houston Innovation Awards. The program was established to honor the best and brightest companies and individuals from the city's innovation community. Eighteen energy startups were named as finalists across all categories, but the following responses come from the finalists in the sustainability category specifically.

    Click here to secure your tickets to see who wins.

    1. Securing a commercial pilot

    "As an early-stage clean energy developer, we struggled to convince key suppliers to work on our commercial pilot project. Suppliers were skeptical of our unproven technology and, given limited inventory from COVID, preferred to prioritize larger clients. We overcame this challenge by bringing on our top suppliers as strategic investors. With a long-term equity stake in Fervo, leading oilfield services companies were willing to provide Fervo with needed drilling rigs, frack crews, pumps, and other equipment." — Tim Latimer, founder and CEO of Fervo Energy

    2. Finding funding

    "Securing funding in Houston as a solo cleantech startup founder and an immigrant with no network. Overcome that by adopting a milestone-based fundraising approach and establishing credibility through accelerator/incubator programs." — Anas Al Kassas, CEO and founder of INOVUES

    "The biggest challenge has been finding funding. Most investors are looking towards software development companies as the capital costs are low in case of a risk. Geothermal costs are high, but it is physical technology that needs to be implemented to safety transition the energy grid to reliable, green power." — Cindy Taff, CEO of Sage Geosystems

    3. Market adoption

    "Market adoption by convincing partners and government about WHP as a solution, which is resource-intensive. Making strides by finding the correct contacts to educate." — Janice Tran, CEO and co-founder of Kanin Energy

    "We are creating a brand new financial instrument at the intersection of carbon markets and power markets, both of which are complicated and esoteric. Our biggest challenge has been the cold-start problem associated with launching a new product that has effectively no adoption. We tackled this problem by leading the Energy Storage Solutions Consortium (a group of corporates and battery developers looking for sustainability solutions in the power space), which has opened up access to customers on both sides of our marketplace. We have also leveraged our deep networks within corporate power procurement and energy storage development to talk to key decision-makers at innovative companies with aggressive climate goals to become early adopters of our products and services." — Emma Konet, CTO and co-founder of Tierra Climate

    4. Long scale timelines

    "Scaling and commercializing industrial technologies takes time. We realized this early on and designed the eXERO technology to be scalable from the onset. We developed the technology at the nexus of traditional electrolysis and conventional gas processing, taking the best of both worlds while avoiding their main pitfalls." — Claus Nussgruber, CEO of Utility Global

    ------

    This article originally ran on EnergyCapital.

    Ad Placement 300x100
    Ad Placement 300x600

    CultureMap Emails are Awesome

    Rice University spinout lands $500K NSF grant to boost chip sustainability

    cooler computing

    HEXAspec, a spinout from Rice University's Liu Idea Lab for Innovation and Entrepreneurship, was recently awarded a $500,000 National Science Foundation Partnership for Innovation grant.

    The team says it will use the funding to continue enhancing semiconductor chips’ thermal conductivity to boost computing power. According to a release from Rice, HEXAspec has developed breakthrough inorganic fillers that allow graphic processing units (GPUs) to use less water and electricity and generate less heat.

    The technology has major implications for the future of computing with AI sustainably.

    “With the huge scale of investment in new computing infrastructure, the problem of managing the heat produced by these GPUs and semiconductors has grown exponentially. We’re excited to use this award to further our material to meet the needs of existing and emerging industry partners and unlock a new era of computing,” HEXAspec co-founder Tianshu Zhai said in the release.

    HEXAspec was founded by Zhai and Chen-Yang Lin, who both participated in the Rice Innovation Fellows program. A third co-founder, Jing Zhang, also worked as a postdoctoral researcher and a research scientist at Rice, according to HEXAspec's website.

    The HEXASpec team won the Liu Idea Lab for Innovation and Entrepreneurship's H. Albert Napier Rice Launch Challenge in 2024. More recently, it also won this year's Energy Venture Day and Pitch Competition during CERAWeek in the TEX-E student track, taking home $25,000.

    "The grant from the NSF is a game-changer, accelerating the path to market for this transformative technology," Kyle Judah, executive director of Lilie, added in the release.

    5 ways technology is transforming the workplace for people with disabilities

    Guest Column

    When Camp For All opened its barrier-free gates more than 30 years ago, our founders believed that design could level the playing field for children and adults with challenging illnesses, disabilities, or special needs. Today, that same philosophy is necessary for workplaces across Greater Houston and beyond; only now the ramps and handrails are digital as much as physical, powered by artificial intelligence (AI) and innovation.

    Technology has significantly transformed the workplace for individuals with disabilities, making it easier for them to perform their roles with greater efficiency and independence. Tools such as ergonomic workstations, adaptive keyboards, closed captioning, dictation software, screen magnifiers, and robotics help customize the work environment to accommodate various needs. Additionally, advancements in remote work technology have opened the door to broader employment opportunities, reducing physical barriers to participation in the workforce.

    Here are five ways that technology turns “reasonable accommodation” into universal enablement and why every employer should take note.

    From closed-captioning to real-time conversation

    Ten years ago, businesses relied upon human typists and translators to convert conversations and presentations for those with disabilities. Today, AI speech-to-text engines like Microsoft 365’s Live Captions or Google Workspace’s Meet Transcripts render spoken words into on-screen text across 40-plus languages and dialects in milliseconds. This means deaf and hard-of-hearing employees can follow rapid brainstorming sessions without waiting for a post-meeting transcript.

    If you are not already using these tools in your workplace, it is easy to start. Most of these services are free or very low-cost, but produce a high return in employee productivity. Individuals with hearing deficiencies can participate in real-time conversations, give feedback, and bring their unique perspectives to the conversation. These tools also enhance productivity for the larger team by providing all employees with a greater flow of ideas, engagement, and recall.

    Voice is the new keyboard

    Voice assistants like Siri, Alexa, and Windows Voice Access have matured into integrated tools for everyday life and business. They can now handle paragraph-length dictation, code snippets, and complex spreadsheet commands.

    Workers with limited dexterity or sight can participate fully in work tasks, which can level the playing field so everyone can succeed and contribute significantly to the workplace. Additionally, voice-assisted technology can help older employees or employees with differing physical needs continue working longer and retain vital organizational knowledge and expertise, contributing to their team's success.

    Readability and writing coaches at scale

    The new and highly sensitive AI-powered editors, such as GrammarlyGO and Microsoft Editor, flag jargon, suggest plain-language rewrites, and even adjust tone for cognitive accessibility. This can be a game-changer for neurodivergent professionals, including people with dyslexia or ADHD, as they have to use less brain power decoding dense emails and can get help writing responses in their workplace correspondence.

    Again, these free or low-cost tools enable all team members to contribute their unique ideas and perspectives when working together to address workplace challenges, better serve clients, and increase productivity.

    Alternative text that captures context

    Image-recognition models can now draft alt-text beyond “blue shirt on chair.” Tools like Adobe’s Intelligent Captioning or Meta’s Automatic Alt Text describe emotion, action, and even brand context, giving screen-reader users a richer experience.

    Employees with blindness or low vision are more likely to navigate online documents, presentations, and requests independently. These technologies also reduce workloads on marketing teams and help them meet accessibility standards without extensive labor and time.

    For businesses that want a varied workforce that brings multiple perspectives, these tools give them a power that hasn’t been harnessed before. If employees living with disabilities have more tools at their disposal, they can, in turn, target specific customers in new ways.

    Robots and exoskeletons

    Many of us remember The Jetsons cartoon show from the 1960s and how far-fetched their housekeeper robot Rosie seemed then. But now, affordable robots and wearable devices to support employees with spinal cord injuries, chronic pain, and disabilities are helping perform repetitive tasks and reducing strain for everyday work tasks.

    These devices may revolutionize unemployment to full-time employment opportunities for many individuals. Devices like ABB’s GoFa and Ottobock’s Paexo can help employers reduce injury claims and retain skilled staff; it’s truly a win-win for employees and employers.


    The impact is universal

    Eight-foot-wide accessible sidewalks, like the ones we have at Camp For All, help wheelchair users, parents pushing a stroller, and travelers rolling luggage. Similarly, AI captions level the playing field for hearing-impaired colleagues, neurodiverse team members, aging professionals, and every employee skimming a meeting on mute. When we treat accessibility as an innovation driver rather than a compliance checklist, we unleash the potential of productivity, loyalty, and creativity throughout our organizations and companies.

    Camp For All sees this throughout the year: when design removes barriers, people discover abilities they never knew they had. Let’s bring that spirit into every Houston boardroom and breakroom — because an inclusive workplace isn’t just the right thing, it’s the smart thing.

    ---

    Pat Prior Sorrells is president and CEO of Camp For All, a Texas-based nonprofit organization. Located in Burton, Texas, the 206-acre Camp For Allsite was designed with no barriers for children and adults with special needs to experience the joy of camping and nature. Camp For All collaborates with more than 65 nonprofit organizations across the Greater Houston area and beyond to enable thousands of campers and their families to discover life each year. She speaks regularly on the need for inclusive design in public spaces.

    CPRIT grants $22M to bring top cancer researchers to Houston

    fresh funding

    Several prominent cancer researchers are coming to the Houston area thanks to $22 million in grants recently awarded by the Cancer Prevention and Research Institute of Texas (CPRIT).

    The biggest CPRIT recruitment grant — $6 million — went to genetics researcher Jean Gautier. Gautier, a professor of genetics and development at Columbia University’s Institute for Cancer Genetics, is joining the University of Texas MD Anderson Cancer Center to continue his research.

    The website for Gautier’s lab at Columbia provides this explanation of his research:

    “The main objective of our research is to better understand the molecular mechanisms responsible for the maintenance of genome stability. These controls are lost in cancer, which is characterized by genomic instability.”

    Aside from his work as a professor, Gautier is co-leader of the Herbert Irving Comprehensive Cancer Center’s Cancer Genomics and Epigenomics Program at Columbia.

    Other recipients of CPRIT recruitment grants include:

    • $2 million to recruit Xun Sun from the Scripps Research Institute to the University of Texas Medical Branch at Galveston.
    • $2 million to recruit Mingqi Han from the University of California, Los Angeles to MD Anderson.
    • $2 million to recruit Matthew Jones from Stanford University to MD Anderson.
    • $2 million to recruit Linna An from the University of Washington to Rice University.
    • $2 million to recruit Alissa Greenwald from the Weizmann Institute of Science to MD Anderson.
    • $2 million to recruit Niladri Sinha from Johns Hopkins University to the Baylor College of Medicine.
    • $2 million for Luigi Perelli to stay at MD Anderson so he can be put on a tenure track and set up a research lab.
    • $2 million for Benjamin Schrank to stay at MD Anderson so he can be put on a tenure track and set up a research lab.

    Over $20.2 million in academic research grants were awarded to researchers at:

    • Baylor College of Medicine
    • Houston Methodist Research Institute
    • Rice University
    • Texas Southern University
    • University of Houston
    • University of Texas Health Science Center at Houston
    • University of Texas MD Anderson Cancer Center
    • University of Texas Medical Branch at Galveston

    In addition, nearly $4.45 million in cancer prevention grants were awarded to one researcher at the University of Texas Medical Branch at Galveston and another at Texas Southern University.

    Also, five Houston businesses benefited from CPRIT grants for product development research:

    • Allterum Therapeutics, $2,999,996
    • CTMC, $1,342,178
    • Instapath, $900,000
    • Prana Surgical, $900,000
    • InformAI, $465,188

    “Texas is a national leader in the fight against cancer,” said Kristen Pauling Doyle, CPRIT’s CEO. “We can measure the return on investment from CPRIT grants … not only in the economic benefits flowing from increased financial activity and jobs in the state, but more importantly in the cancers avoided, detected early, and treated successfully. Thanks to the Legislature’s vision, this commitment is saving lives.”

    Overall, CPRIT approved 61 grants totaling more than $93 million in this recent round of funding.