Overheard: Houston's energy sector welcomes Greentown Labs

eavesdropping in Houston

Greentown Labs CEO Emily Reichert called on members of Houston's energy community to speak at Greentown Houston's grand opening. Photo by Lee Bond/Greentown Labs

Greentown Houston is officially open for business, and it's safe to say the energy innovation community is excited about it. The 40,000-square-foot space is expecting to move its inaugural 30 companies in throughout the summer.

The grand opening event, which was streamed online with an outdoor invite-only event, took place on Earth Day and featured speakers from across the energy sector. The speakers represented some of the almost 30 corporate partners Greentown Houston has announced.

Click here to read more about the grand opening and take a peek inside the facility.

Missed the discussion or just want a refresher on on the highlights? Here are some significant overheard moments from the Greentown Houston Grand Opening.

"Houston has all the necessary ingredients and it has momentum."

Photo by Lee Bond/Greentown Labs

— Barbara Burger, vice president of innovation at Chevron and president of Chevron Technology Ventures. "Let's celebrate. And then let's get busy."

"Houston, as the energy capital of the world, has a moral obligation to reduce carbon emissions."

Photo by Lee Bond/Greentown Labs

— Mayor Sylvester Turner. "We need to invest in our innovation ecosystem and support the climatech and clean tech entrepreneurs who will be building Houston's new energy economy and creating the new jobs of tomorrow."

"Houston has the talent, know how, and can-do spirit to tackle the dual challenge of leading dual energy demand while aggressively lowering the carbon footprint."

Photo by Lee Bond/Greentown Labs

— Bob Harvey, president and CEO of the Greater Houston Partnership.

"Houston must remain the center of the future energy industry, and today is an important step in restoring that."

Photo by Natalie Harms/InnovationMap

— David Leebron, president of Rice University. "We look forward to our strong partnership."

"We can't solve climate change from the coasts. We need the whole United States to be engaged, and I'm bullish on Houston leading this transition for many reasons."

Photo by Lee Bond/Greentown Labs

— Emily Reichert, CEO of Greentown Labs. "Houston is home to world-leading energy organizations, incredible engineering strength, talent, and assets, that can, and frankly must, be redeployed to decarbonize resources."

"This is a city that does not stand still."

Photo by Lee Bond/Greentown Labs

— Ajay Mehta, General Manager of Shell. "At Shell, we have a mission to reach net zero emissions by 2050."

"For bp, partnering with Greentown Labs represents living our purpose to reimagine energy."

Photo by Lee Bond/Greentown Labs

— Jane Stricker, senior relationship manager, regions, cities and solutions at bp.

"Innovation is like oxygen, and it breathes life into hope and possibility. The work we are doing around the energy transition is hard and challenging, and frankly is going to take all of us."

Photo by Lee Bond/Greentown Labs

— Darryl Willis, corporate vice president, energy industry, at Microsoft. "We think that the future is all about partnerships and platforms, and our mission is to help from Microsoft's vantage point to accelerate the energy transition and to help the city of Houston around its aspirations around the energy transition as well."

"We appreciate being part of not only maintaining Houston's position as the energy capital of the world but also establishing it as the energy transition capital of the world."

Photo by Lee Bond/Greentown Labs

— Scott Burns, vice president of retail innovation, customer experience, and market intelligence at NRG.

"[Greentown Houston] will provide this center of gravity for the energy community to come together and work toward the transition plan."

Photo by Lee Bond/Greentown Labs

— Tim Ong, head of innovation at BHP Petroleum. "


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Rice University breaks ground on new innovation hub, The Arc

breaking ground

Construction is officially underway on Rice University's The Arc in Houston’s Ion District.

The university broke ground on the 200,000-square-foot research, corporate innovation and office building on Nov. 4. The facility will share a plaza with the existing Ion building, fostering collaboration within the innovation space, according to Rice.

“The Arc will bring Rice’s extraordinary research and talent and Houston’s impactful innovation ecosystem into even closer connection with the industries and innovators working to solve some of the world’s most consequential challenges,” Rice President Reginald DesRoches said in an announcement. “That constant exchange of ideas and expertise will help move discoveries more rapidly from the laboratory to real-world impact.”

Construction is scheduled to be completed by Q2 2028. Rice Real Estate Co. is developing the project, and Rice University will occupy about 80,000 square feet in the building (about 40 percent). Preleasing has begun, with floor plans ranging from 28,000 to 31,000 square feet.

The Arc will feature conference and meeting spaces, an amenity lounge, fitness center, outdoor plazas, underground parking, and on-site retail and dining, according to the release.

It aims to host tenants focused on artificial intelligence and machine learning, data science, robotics, quantum science and engineering and energy, including Rice's new AI Foundry.

Rice says the AI Foundry will be a space where university experts and partners can support organizations with AI challenges. Rice recently committed to hiring 75 new AI-focused faculty and announced plans to launch a new Master of Artificial Intelligence (MAI) next fall.

“The AI Foundry is exactly the kind of collaboration the Arc is designed to enable,” Amy Dittmar, the Howard R. Hughes Provost and executive vice president for academic affairs at Rice, added in the release. “By bringing Rice researchers together with industry partners in a shared environment, we can accelerate the movement of ideas from research into practical applications while helping organizations build the capabilities they need to succeed as AI continues to evolve.

Developers of The Arc are targeting LEED Gold certification by incorporating smart building automation and energy-saving features into the project's design. Rice first announced the project in September 2025.

Rendering courtesy Bogza

Houston battery tech startup FlowCellutions acquired by Katy energy co.

M&A

Katy-based TerraFlow Energy, an energy storage and infrastructure company, has acquired Houston-based battery technology startup FlowCellutions. Financial terms weren’t disclosed.

FlowCellutions still operates under its established name, but with the tagline “A TerraFlow Energy Company.” Becca Segel, founder and CEO of FlowCellutions, now runs the business as its president.

FlowCellutions specializes in electrochemical sensing, diagnostics, analytics, and testing that offer insights into battery chemistry, charging capabilities, and system performance.

“FlowCellutions has always been focused on developing better ways to understand what is happening inside a flow battery and using that information to improve how these systems perform,” Segal said in a press release. “Joining TerraFlow gives us the opportunity to apply that work at a much larger scale while continuing to build the capabilities and expertise that make FlowCellutions unique.”

The FlowCellutions platform supports data centers and other heavy users of power. It’s designed to help reduce operating costs, prevent failures and costly downtime, and extend battery lifetime from about seven years to more than 30 years.

Segel founded the company in 2022. A member of Greentown Labs, the company raised more than $2 million in non-dilutive funding and received $1.5 million in National Science Foundation funding earlier this year.

FlowCellutions is one of five finalists in the Energy Transition Business category of InnovationMap’s 2026 Houston Innovation Awards.

“FlowCellutions brings a depth of scientific and technical expertise that fits naturally with where TerraFlow is going,” Jon Parrella, CEO of TerraFlow, said in the release.

“As we move from developing these systems to deploying them at commercial scale, understanding performance at a deeper level matters,” he said. “Bringing FlowCellutions into TerraFlow strengthens that capability and gives both teams more opportunity to advance the technology.”TerraFlow, founded in 2024, develops long-duration energy storage and power infrastructure for data centers, industrial facilities, utilities and other large power consumers.

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This article originally appeared on EnergyCapitalHTX.com.

3 fast-growing Houston scaleups named Innovation Awards finalists

meet the finalists

From IPOs to groundbreakings, some of Houston's most innovative companies reached major milestones this year.

As part of the 2026 Houston Innovation Awards, our Scaleup of the Year category honors innovative later-stage startups that have recently reached a significant milestone in company growth. Three scaleups have been named finalists for the 2026 award.

Read more about these businesses, their founders and their breakthrough technologies below. The 2026 winners will be announced on InnovationMap.com in mid-November.

Erock

Energy infrastructure company Erock, previously known as Enchanted Rock, develops dual-purpose microgrids that rely on natural gas and renewable natural gas to produce lower carbon emissions and air pollutants than diesel generators. Its products can provide bridge power before grid interconnection, backup power during outages and dispatchable capacity that supports long-term grid reliability. The company has more than 1,100 megawatts of installed capacity and over 20 years of experience serving commercial, municipal and large-scale technology customers.

Erock completed its initial public offering this year, raising approximately $600 million in gross proceeds. It also grew its contracted power system sales backlog to approximately $1.7 billion, up tenfold year-over-year, with production sold out through 2028, according to the company's application. The company secured a major equipment order from Anthropic, began construction of the 366-megawatt El Paso Electric project supporting Meta's data center campus, and started assembly operations at its Hyperion facility in Cypress, Texas.

Hertha Metals

Hertha Metals produces lower-cost, lower-emission steel and high-purity iron. The company has developed a single-step process that uses natural gas as a direct reductant instead of metallurgical coal, which cuts production costs by more than 25 percent and emissions by up to 50 percent, according to the company. The same process produces high-purity iron needed for high-purity steels and rare earth magnets. The company says it aims to "re-industrialize America’s production of critical materials."

Hertha Metals was founded by CEO Laureen Meroueh in 2022 and emerged from stealth last year with more than $17 million in venture capital funding. The company closed a $133.65 million Series A this month and also broke ground on its $100M high-purity iron factory known as Chalyx in Conroe.

Venus Aerospace

Spacetech company Venus Aerospace is developing a high-thrust rotating detonation rocket engine (RDRE) that replaces the subsonic combustion used in conventional rocket engines. The RDRE is a compact, simpler engine that can deliver up to 15 percent greater efficiency for defense and space applications. It completed its first U.S. flight test of the engine last summer.

Venus Aerospace was founded in 2020 by CEO Cassie Duggleby and CTO Andrew Duggleby. It raised a $20 million Series A in 2022 and $42 million Series A2 in 2025. It closed a $91 million Series B earlier this year and expanded its leadership team. The company is working toward longer-duration and higher-thrust testing and advancing its flight program.

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