Penrose's advance process control software can increase production by 10 to 15 percent in downstream oil and gas refineries. Pexels

In the next 30 years, the world will need 30 percent more energy due to population growth. While energy production will increase to keep up with demand, there is an increasing concern with the impact on the environment.

"How do you produce more energy without emission increases or more air quality pollution?" asks Erdin Guma, CFO of Penrose Technologies.

According to Guma, Penrose is uniquely well-suited to solve these serious challenges with its advanced process control technology increases the productivity of a chemical plant or refinery by 10 to 15 percent. The increase in productivity means the plants use less fuel to produce the energy. The plant then releases fewer emissions while producing the same amount of energy.

The technology itself is an automation software — similar to autonomous software on a plane. The autonomous operation increases downstream productivity, which brings about the energy efficiency.

"Our autopilot software (like a human operator) can manage and foresee any unexpected disturbances in the plant," Guma explains. "The achievements that the Penrose technology has brought about seemed impossible to chemical and process engineers in the refinery space a few years ago."

Penrose recently signed its first project with one of the biggest downstream firms in the world. With a network of refineries and petrochemical plants around the world, this contract could lead to a global roll out of the Penrose technology.

A ground-breaking technology for O&G
The word "Penrose" is taken from a penrose triangle, an impossible geometrical object. Guma explained that the energy efficiency brought about from their software seemed impossible at first. Penrose has been able to reduce emissions inside plants and refineries by 15 to 20 percent while keeping production at the same level.

In 2007, a chief engineer working at a major oil and gas processing plant in Houston procured the technology for one of his plants. When the engineer saw how well the technology worked, he founded Penrose Technologies in 2017 with Tom Senyard, CTO at Penrose, who originally developed the technology.

After starting the company at the end of 2007, Penrose joined Station Houston. Guma said that by becoming a member, Penrose was able to plug into a large refining and petrochemical network.

"Penrose Technologies is completely self-financed. We worked with [Station Houston] as we finalized the software to find out what potential customers thought of the product. For us, Station Houston has been a great sounding board to potential investors in the company," Guma says.

Guma also explained that while there has been an uptick in innovation in the last few years, the refining and petrochemical business is traditional a slow mover in the uptake of innovation.

"I think more major oil and gas firms are becoming attune to startups and the innovation solutions they offer," Guma says.

He went on to explain that the biggest challenge Penrose faces is perception. Since the software allows plant operators and engineers at the plant to be hands off in the processes, there is a concern with reliability. For industry insiders, any viable product must be reliable even when process conditions at the plant change, which can happen often.

"The Penrose software is maximum hand off control from operators, and the reliability of our software gives us a huge edge in other competing products that can be unreliable," Guma says.

Future growth on a global market
Given the pressing need for more environmentally sustainable energy production, new technology will be adopted in the oil and gas energy. As Guma explains it, there will be no way to continue producing energy as it's been produced for decades because the negative effects of air pollution and emissions will be too severe — particularly in the areas where refineries operate.

"We see the global market for this type of technology as severely underserved," Guma says. "It's a big and sizable market, and I think we can reach a $2 to $3 billion valuation in the next five years."

With a core team of six employees in Houston, Penrose's software is now commercially available, and the company is in full growth mode at this point. The software can be distributed directly to customers, but they are working to develop distribution with major engineering companies as well.

Guma is grateful to be in an environment conducive to energy start-ups. He sees Houston as a major advantage given its proximity to the energy sector.

"No technology rises up in a vacuum. Any new technology needs a good ecosystem to come from," says Guma. "Houston was that ecosystem for Penrose."

Dyan Gibbens translated her Air Force experience with unmanned missiles into a drone services company. Courtesy of Alice

Houston drone company has big business on the horizon

The sky's the limit

Dyan Gibbens found her dream career. She studied engineering, learned to fly at the United States Air Force Academy, went into pilot training, and served as engineering acquisitions officer managing stealth nuclear cruise missiles. She even went on to support Air Force One and Global Hawk UAS engineering and logistics. She dedicated five years to active service before transitioning to the reserves.

"When I went to transition, I learned I was permanently disqualified from ever serving again," Gibbens said. "It was devastating to me, because all I've ever wanted to do was serve."

She went into a doctorate program — she already had her MBA — and was close to finishing up when her drone startup took flight. Trumbull Unmanned provides drone services to the energy sector for various purposes. With her experience as a pilot and managing unmanned missiles, she knew the demand for drones was only growing — and, being from Texas, she knew what industry to focus on.

"I wanted to start a company that uses unmanned systems or drones to improve safety and improve the environment and support energy,"

InnovationMap: What exactly does Trumbull Unmanned do?

Dyan Gibbens: We fly drones in challenging and austere environments to collect and analyze data for the energy sector. We fly across upstream, midstream, and downstream either on or off shore. We focus on three areas: digital transformation, inspection and operations, and technology development and integration.

The types data we collect and analyze could be LiDAR — light detection and ranging — to multispectral — to see the help of different properties — to visible — to perform tech-enabled inspections. We've recently hired inspectors in house as well. On LiDAR, we just hired a subject matter expert.

IM: So, the company is growing. What else is new for Trumbull?

DG: We just signed a few five-year agreements with supermajors. We're excited about that and the new hires. We're starting to do more on communications and situational awareness. We're doing more in energy and now in the government.

IM: What were some early challenges you faced?

DG: We are 100 percent organically funded — from our savings and from client contracts. Our first client was ExxonMobil. Our second client was Chevron. We had to prove ourselves over and over. We had to work hard to earn and then maintain that business. For us, it was also adjusting to a fluctuation in cash flow. It was going from a steady job to betting on yourself, and we didn't know anyone in Houston.

IM: What's the state of drone technology in the field?

DG: We've continued to see a hybrid approach toward services. Meaning, there's an in-house component and outsourced component. On the outsourced component, we intend to provide that for our clients. On the in-house component, while we don't train the masses, we do train our clients on request. We've promoted that model from the beginning. We think it makes sense that they are trained to do something simple, like take a picture, but for some of the more difficult projects, they outsource to us.

We're going to continue to see increased autonomy. There are really some amazing things already in autonomy, but there's still a lot of challenges flying in dense environments such as refineries and plants.

IM: How is Houston's startup scenes for veterans? What resources are out there?

DG: The way I see it is veterans have made a commitment to serve us, so we should make a commitment to serve them. That's my philosophy. Large companies have different programs, which is great, and there are entities such as Combined Arms, which has full services for transitioning veterans where you can go in and one-stop shop to get support from everything like getting connected to the VA to help working through PTSD to getting help transitioning to business. There are also really good Service Academy networks. More and more opportunities exist to step up to serve veterans.

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Portions of this interview have been edited.

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5 Houston deep tech startups pushing the boundaries of their industries

meet the finalists

Houston has long been at the forefront of innovation, from NASA’s Johnson Space Center to its startup ecosystem using technology to disrupt industries.

As part of the 2026 Houston Innovation Awards, our Deep Tech Business category will honor an innovative startup providing technology solutions based on substantial scientific or engineering challenges, including those in the AI, robotics and space sectors.

Five deep tech companies 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.

Casimir

Battery tech startup Casimir develops semiconductor chips that produce continuous electrical power straight from the quantum vacuum, without the need for a battery, cord or external charge source. The company is targeting commercialization for its first-generation MicroSparc chip by 2028.

Harold “Sonny” White founded Casimir in 2023 after nearly two decades at NASA. The company emerged from stealth with a $12 million seed round in 2026. It was also awarded an STTR Phase I contract from the U.S. Space Force's SpaceWERX to support the development of the company's solid-state generator for potential use by the Department of the Air Force earlier this year.

FocisAI

Artificial intelligence startup FocisAI helps refinery owner-operators unlock actionable insights from 3D scans and images.

FocisAI was founded by CEO Tyler Wooten, COO Colin Snell and CTO Kyle Snell in 2026. It is a member of Greentown Labs and launched a seed round in September, which is expected to close by the end of the year, according to the company's application. It has rolled out 10 pilot programs and is looking to move into recurring, facility-scale deployments and scale its team in Houston this year.

Machine Saver Inc.

Industrial tech startup Machine Saver Inc. builds wireless and wired vibration and proximity sensors to tell heavy industry when a machine is about to fail. The company's technology runs on an 8-plus-year battery life and helps operators reduce downtime, improve maintenance and extend equipment life.

Machine Saver was founded by CEO Colton Bach and Quentin Bach in 2013. Its customers and partners include Houston Methodist, Blue Bell, Genemco, as well as energy and heavy industry, food and beverage, and cold chain companies, according to its application. The company is raising a Series A.

Square Robot

Energytech startup Square Robot develops and operates submersible inspection robotics that inspect aboveground storage tanks while they remain in service. The robots reduce downtime and costs, improve worker safety and limit hydrocarbon emissions.

Square Robot launched its Houston office in 2019 and closed a Series B in 2025. It plans to complete its first U.S. Navy demonstrator tank in November and is also developing real-time inspection software.

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.

Houston leads U.S. with the biggest surge in millionaire renters

Rent Report

The number of millionaire renters and homeowners in the U.S. has surged over the last five years, and Houston has soared ahead of the rest with the largest growth rate among these affluent renter households.

Houston leads the nation with the No. 1 increase in millionaire renters from 2020 to 2024, a new RentCafe study found. The number of these wealthy households increased from 18 to 232 over the last five years, representing a 1,189 percent growth rate.

"The pandemic accelerated the shift as remote work pushed the wealthy to relocate to lower-tax metros like Houston, where millionaire renters grew 13-fold, versus 3.9-fold for owners," the report said. "Granted, 232 households is still a tiny fraction of the Houston metro’s roughly 2.7 million households, but the growth rate far outpaces any other major metro."

Nationwide, the number of millionaire renter households grew 229 percent from 2020 to 2024, outpacing the 193 percent growth rate among millionaire homeowners.

Dallas was the only other Texas metro to crack the top 10. The number of millionaire renter households in North Texas has more than quintupled, from just 30 in 2020 to 165 in 2024. That represents a growth rate of 450 percent, which — surprisingly — is only the eighth highest nationwide.

But when it comes to the largest populations of millionaire renters, New York City and San Francisco still lead the way. New York claimed the No. 1 spot with nearly 7,300 millionaire renters living in the city in 2024. Houston ranked 12th on that list.

Elsewhere in Texas, Austin and Dallas ranked as the 16th and 17th, respectively, for the largest population of millionaire renters. There were 206 millionaire renters living in Austin in 2024, and 165 in Dallas.

This is who the typical millionaire renter is
The report also revealed a surprising statistic about the typical millionaire renter in the U.S. — a lot of them are millennials working in "white-collar, high-earning fields."

"Nearly half (49 percent) of millionaire renters are Millennials, and the number of affluent Millennial renter households surged 392 percent during the five-year period," the report said. "Gen X follows with 33 percent of millionaire Gen X households renting after increasing by 147 percent."

The report continued, "Although Gen Z still represents a small share of millionaire renters (just 2 percent of the total), no generation has expanded faster: Gen Z millionaire renter households leaped from fewer than a dozen to more than 400 — a tiny cohort today, but one that was virtually nonexistent five years ago."

The top three most common professions for millionaire renters are chief executives, software developers, and managers, the report additionally found. In Houston, the surge of wealthy newcomers are mostly executives, professional athletes, and entertainers.

"These roles tend to generate steady, substantial income without necessarily tying workers to one location, making renting a practical fit, rather than a financial necessity," the report said.

Hotspots for millionaire homeowners
In RentCafe's separate list comparing the top 10 most popular U.S. metros for millionaire homeowners, Houston ranked 12th nationally with 4,374 millioniare homeowners living in the metro as of 2024. These wealthy Houstonians are most likely working as chief executives, physicians, managers, and lawyers and judges.

Houston has already proven to be a hotspot for millennial homebuyers, and the latest RentCafe data says millennials make up 19 percent of all millionaire homeowners in the U.S. Gen Xers and Baby Boomers still maintain the largest shares of millionaire homeowners nationwide, at 45 and 33 percent, respectively.

Dallas (No. 10) and Austin (No. 20) also appeared among the hottest metros for millionaire homeowners.

Only one Texas city appeared among RentCafe's list of the 20 fastest-growing metros for millionaire homeowners: College Station ranked 13th nationwide with a growth rate of 1,329 percent. From 2020-2024, the number of millionaire homeowners residing in College Station grew from 14 to 200.

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This article originally appeared on CultureMap.com.

Houston ranks high on best cities for small-business expansion report

business growth

For small businesses looking to expand, Houston might be the right place.

Among 56 major U.S. metros, Houston grabbed the No. 6 spot on a new list of the metros boasting the strongest environments for small-business expansion.

A 2025 report from the state comptroller’s office showed roughly 970,000 small businesses operate in the 13-county Gulf Coast region. The region includes the majority of the Houston metro area.

“Whether it’s a family-owned shop on Main Street or a fast-growing startup, small businesses power our state’s economic engine, create opportunity, and strengthen the character of every Texas community,” Kelly Hancock, who was interim state comptroller when the report was released, said in a press release.

Business lending platform Clarify Capital analyzed five factors to develop the list: job growth, business entry and exit, net job creation, and unemployment.

Overall, the Nashville area claimed the No. 1 spot on the list. Other major Texas metros also cracked the top 10, including Austin at No. 3 and Dallas-Fort Worth at No. 7.

“The highest-ranking metros combine labor-market momentum with steady business formation and relatively favorable local employment conditions,” Clarity Capital says.

The Houston metro ranked sixth for job growth, 11th for business entry rate, 38th for business exit rate, second for net job creation rate, and 50th for unemployment rate.

“For business owners, the ranking is a starting point rather than a guarantee,” Clarify Capital says. “Local demand, competition, operating costs, and access to capital still shape whether an expansion works.”

“Building enough cash-flow room for hiring, equipment, and unexpected expenses can help small and midsize business owners take advantage of a strong market without stretching the business too thin,” the company adds.

Of course, money fuels small-business expansion in the Houston area or anywhere else.

According to an analysis of SBA loan data by feasibility consulting firm MMCG, the Houston metro area saw 1,685 approvals for 7(a) loans and 101 approvals of 504 loans in the federal government’s 2025 budget year. The approval numbers for both loan categories increased from the previous year.

Altogether, the 7(a) and 505 loans exceeded $1 billion.

The data from the U.S. Small Business Administration suggests small-business expansion may be on the rise in the Houston area.

Further potential evidence of small-business expansion in the Houston area: The region experienced a 92 percent rise in account applications from 2024 to 2025 submitted to Bluevine, a small-business banking platform. The Houston metro ranked fifth for the number of Bluevine small-business applications in 2025.