Houston energy startup closes $17M series A to fund Texas geothermal facility

money moves

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.

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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.

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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

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    This article originally ran on EnergyCapital.

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    10+ can't-miss Houston business and innovation events for August

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    School is back in session this month, and a busy slate of Houston business and innovation events follows. This month brings demo days, loads of networking opportunities and a major health symposium. Here’s what not to miss and how to register. Please note: this article may be updated to add more events.

    Aug. 4 — CEOs: Build With AI, Exit With a Premium

    Join Blue People for this engaging presentation by David Lopez, founder of Summa, at the latest installment of Tech + Tequila Talk. Lopez will discuss AI moves that can multiply a company's value.

    This event is Tuesday, Aug. 4, from 5-7 p.m. at the Ion. Register here.

    Aug. 4 — SEIP Demo Day

    The Rice Center for Engineering Leadership will showcase the groundbreaking projects developed by its Summer Engineering Innovation Program at the 2026 Demo Day. Attendees can meet the SEIP participants and partners and hear the teams' final presentations.

    This event is Tuesday, Aug. 4, from 6-8 p.m. at the Ion. Register here.

    Aug. 5 — Summer Venture Studio Preview Day

    The Liu Idea Lab for Innovation and Entrepreneurship (Lilie) will present its inaugural Summer Venture Studio Preview Day this month. Hear from the student founders selected for Lilie's summer cohort, which features teams ranging from the healthcare and artificial intelligence to advanced manufacturing sectors.

    This event is Wednesday, Aug. 5, from 4-6 p.m. at the Ion. Register here.

    Aug. 11 — Mercury Fund Day at the Ion: How Legacy Software Giants Are Going AI-First

    Don’t miss the latest installment of Mercury Fund Day at the Ion, previously known as Software Day. The recurring monthly event features office hours (by application), a keynote and networking opportunities. This month's topic will feature a working conversation with Senior Director of Growth at Twilio Mustafa Ali, Senior Director of Consumer Product at WhatsApp Zafir Khan, and Founder and CEO of utilITise Salim Gheewalla.

    This event is Tuesday, Aug. 11, from 3:30-7 p.m. at the Ion. Register here.

    Aug. 13 — Pints and Prototypes

    TMC Innovation Lab will host its Pints & Prototypes networking event this month. Minneapolis-based Medtronic will support this month's event and has invited guest speakers to share their journey in the medtech scene.

    This event is Thursday, Aug. 13, from 4-5:30 p.m. at TMC Innovation Factory. Find more information here.

    Aug. 14 — Houston Methodist Cancer Symposium

    The 14th Annual Houston Methodist Cancer Symposium will bring together Houston Methodist scientists and physicians from a broad spectrum of fields to discuss everything from innovative translational science to clinical updates. The symposium aims to provide education focused on improving patient care, research collaboration and leading medicine.

    This event is Friday, Aug. 14, from 7:30 a.m.-4:45 p.m. at Houston Methodist Research Institute. Find more information and register here.

    Aug. 14 — Hands-On Workshop: Build Your Own Reusable AI System

    Impact Hub Houston and Social Media Breakfast of Houston will host this hands-on workshop on using Smart Card to create a repeatable process users can hand off to AI. Attendees should bring a laptop, an AI tool, and a task that AI could help with. The workshop will focus on working with ChatGPT, Claude or Gemini.

    This event is Friday, Aug. 14, from 8:30-10:30 a.m. at the Ion. Register here.

    Aug. 17-21 — Foundations of Cancer Therapeutics Crash Course

    The Gulf Coast Consortia will host a virtual course focused on the commercialization aspects of moving cancer therapeutics toward the market. Presenters represent The University of Texas Medical Branch Galveston, the Greater Houston Partnership, TMC Innovation, the University of Houston, Texas Southern University and other major institutions.

    This event begins Monday, Aug. 17, at 10 a.m. Register here.

    Aug. 20 — Pickle Lab’s Two-Year Anniversary Celebration

    Enjoy an evening of open-play pickleball, beats by a live DJ, giveaways and more at the second anniversary celebration of Pickle Lab in the Ion District. Enjoy a free beverage from Second Draught and food for purchase from the Crunchy’s for the Munchies food truck.

    This event takes place Thursday, Aug. 20, from 6-9 p.m. at Pickle Lab at the Ion. Register here.

    Aug. 20 — SBA Lender Matchmaking Event

    Business owners can meet with multiple lenders in scheduled, one-on-one 15-minute sessions during this speed-dating style SBA event. SBA Houston District Office representatives will also be onsite to provide free business advising.

    This event takes place Thursday, Aug. 20, from 8:30 a.m.–noon at SBDC Sam Houston State University – The Woodlands Center. Register here.

    Aug. 27 — BiteLabs Digital Health and Innovation Summit

    TMC Innovation and BiteLabs will host the Digital Health and Innovation Summit, which aims to connect clinicians, founders and investors. The event will include an AI in biotech panel, a healthcare AI ethics panel, a hiring in digital health panel, and pitches from BiteLabs USA HealthTech, AI, and Innovation Fellowship.

    This event takes place Thursday, Aug. 27, from 10 a.m.–5 p.m. at TMC Innovation Factory. Register here.

    Houston nonprofit wins Meta grant to study AI glasses for disabilities

    Helping Houston

    A grant from Meta will help Easter Seals Greater Houston determine whether wearable AI smart glasses improve accessibility for those with disabilities. The local nonprofit is one organization that received a share of $2 million that Meta allocated in late July.

    "Meta is proud to select recipients, including the Easter Seals Greater Houston, based on demonstrated impact, scalability, and relevance to areas where hands-free technology can make the biggest difference," Meta executive Beth Murray said in a request for comment. "It was exciting to receive nearly 500 applications from organizations across the country, and now the real innovation begins here in Houston with the Easter Seals project to understand how different local communities can benefit from AI glasses."

    Meta launched its AI Glasses Impact Grant program in January with the goal of delivering nearly $2 million in funds to organizations across the country to see how their Meta AI Glasses could improve people's lives. It selected over 30 recipients from more than 500 applicants.

    Easter Seals is using the grant to help pay for its BridgingApps Program, "a community-centered pilot studying how three distinct populations — people with low vision, people with intellectual and developmental disabilities, and those with cognitive aging – can benefit from AI glasses," Meta says. Easter Seals is part of one of the oldest networks in America for disabilities, delivering disability support, veteran training, and other services. The Greater Houston branch was established in 1947.

    Meta AI Glasses integrate AI personal assistance with wearable tech for a hands-free connective experience. While many people use their built-in cameras and social media access to create content, the Impact Grant promotes how the technology might assist people with disabilities as well as innovate in industrial and scientific fields.

    Data storage and recall could aid people with memory loss, while interpretative AI facial recognition software may let neurodivergent and developmentally delayed people recognize social cues. The pilot program at Easter Seals will explore some of these possibilities.

    Two other Texas organizations received grants. The University of North Texas will also explore disability assistance through Meta AI Glasses, in a school environment rather than in the general public space. Austin software company Embarcadero Technologies will use the glasses to build a remote training platform that can simultaneously mentor five junior workers at once.

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    This article originally appeared on CultureMap.com.

    Houston startup lands $10M to power up electrician staffing platform

    money moves

    Houston-based Buildforce, which provides a tech-enabled staff platform geared toward electricians and electrical contractors, has raised a $10 million Series A round led by Houston’s Saepio Capital.

    Other investors in the round include Blue Heron Capital, Revolution’s Rise of the Rest Seed Fund, S3 Ventures and Chicago Ventures.

    Buildforce says the funding will help fuel its national expansion and further development of its technology.

    The startup, founded in 2019, connects electricians with electrical contractors for commercial and industrial construction projects. Buildforce’s mobile app helps electricians find and carry out work, and a web app helps electrical contractors find and manage electricians.

    “This financing is a major milestone in furthering our mission to help people dedicated to a career in the construction trades lead more secure and fulfilling lives,” co-founder and CEO Moody Heard said in a news release.

    Buildforce focuses solely on the electrical trade within the construction sector.

    Nick Graziano, principal at Blue Heron, says the shortage of electricians is intensifying as demand for electricians accelerates, driven by data center construction, infrastructure development and energy transition initiatives.

    The U.S. Bureau of Labor Statistics estimates the U.S. will need to hire about 80,000 new electricians per year through 2032 to catch up with demand. According to the National Electrical Contractors Association, the U.S. is grappling with a current shortage of 50,000 electricians.

    A 2026 economic report from asset manager BlackRock says the electrical trade is expected to be the single fastest-growing employment category in the U.S. labor market over the next 10 years.

    “Buildforce is capitalizing on a clear opportunity in America’s generational infrastructure buildout. We believe their mission to use technology to improve lives in the construction space will allow them to make a positive long-term impact on a large and important labor market,” added Jaan Bains, managing partner at Saepio Capital.

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