These were Houston's top energy innovation stories this year

2019 in review

Houston — known as the Energy Capital of the World — had several trending stories in 2019 focused on energy innovation. Photo courtesy of Thomas Miller/Breitling Energy

Editor's note: With 2020 just days away, InnovationMap is looking back at 2019's top stories in Houston innovation. Within the energy category, top stories included game-changing energy tech companies, the future of oil and gas — as told by the industry's emerging leaders, the results of a reverse pitch competition for ExxonMobil, and more.

Rice Alliance names the 10 most promising startups at Houston's Offshore Technology Conference

Startups from across the world pitched at the Rice Alliance Startup Roundup at the Offshore Technology Conference. Getty Images

Over 50 different startups from across the globe gathered at the Offshore Technology Conference for the fifth annual Rice Alliance Startup Roundup event. The full day of speed pitching and presentations, hosted by Rice Alliance Managing Director Brad Burke, took place at NRG Arena on Monday, May 6.

After interacting with all the various startups, the Rice Alliance's panel of experts voted on the 10 most promising startups. Half of the companies that were recognized are based in Houston — and even more have an office or some sort of operations in town. Here's which technologies the offshore oil and gas industry has its eye on. Click here to read more.

Overheard: Here's the future of oil and gas tech, according to this panel at OTC

Three young professionals took the stage to discuss the future tech of offshore operations in oil and gas. Courtesy photos

The oil and gas industry has a reputation for being a slow adapter when it comes to technology advances, but that's changing — as is the workforce. In the next few years, half of the United States workforce will be millennials, according to the Bureau of Labor Statistics.

A panel at the 2019 Offshore Technology Conference discussed the future of oil and gas technology — and the young professionals who are taking over the industry. Click here to read more.

ExxonMobil taps two new technologies in a Houston reverse pitch program

ExxonMobil named two winners in its inaugural reverse pitch competition with BBL Ventures. Courtesy of OctoRD

ExxonMobil and BBL Ventures have teamed up to flip the script on pitch competitions. Rather than have startups pitch themselves, the two companies collaborated on a reverse pitch event where Exxon identifies a few problems and search for companies that can build a solution.

The purpose of the event, says Tim Westhoven, technology scouting and venturing at ExxonMobil at the Baytown refinery, was to get the company out of its day-to-day to spark new ideas and innovation.

"Typically, as an engineer, when we think about how we solve a problem, we start inside the organization," Westhoven says at the event, which took place on Wednesday, June 5, at Station Houston. "Then we think about what problems we want to solve. Sometimes, you don't even think at all about what's available on the outside. This reverse pitch is us thinking about the impact we want to have and what the outside can offer." Click here to read more.

5 emerging energy tech companies in Houston revolutionizing the industry

It might not be surprising to discover that the energy capital of the world is a hub for energy startups. Getty Images

If you thought Houston's wildcatter days were exciting, just you wait. Houston has an emerging ecosystem of tech startups across industries — from facial recognition devices used at event check in to a drone controller that mimics movement in space.

A somewhat obvious space for Houston entrepreneurs is oil and gas. While the energy industry might have a reputation of being slow to adapt new technologies, these five Houston startups are developing the future of the industry — one device at a time. Click here to read more.

Exclusive: Plug and Play announces 15 energy tech companies for inaugural Houston cohort

Plug and Play Technology Center has named its first 15 startups in its Houston Energy and Sustainability cohort. Getty Images

A Silicon Valley accelerator program has announced the companies that will participate in its first Houston cohort just as the program begins to foster energy tech innovation in town.

Plug and Play Technology Center, which announced its entry into the Houston market this summer, named the 15 companies that will complete the program. While there are only two Houston-based companies in the mix this time around, all 15 companies will be operating locally with Houston corporate partners and startup development organizations.

"By being a part of this Plug and Play cohort, our corporate partners have validated that there is an interest in these startups' technology solutions," says Payal Patel, director of corporate partnerships for Plug and Play in Houston. "This will encourage these non-Houston based startups to spend more time in Houston, likely (and hopefully) leading to them doing business with our corporations, raising money from local investors, hiring local talent, and setting up an office in Houston." Click here to read more.

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Air taxi network to land in 'Texas triangle' of Houston, Austin, DFW next year

taking flight

San Jose, California-based aerospace company Archer Aviation is bringing its air-taxi system to the “Texas triangle” of Houston, Austin and Dallas-Fort Worth.

Currently, the planned zero-emission electric air taxi networks will use Archer’s Midnight air taxi to “turn 60- to 90-minute drives to major airports, business districts and major destinations into 10- to 20-minute flights,” the company said in a news release. Archer plans to begin flights in the Texas triangle next year.

The Midnight air taxi is an all-electric vertical takeoff and landing (eVTOL) aircraft. It can carry four passengers and a pilot and is designed for consecutive flights of about 20 miles.

Archer cites the Texas triangle as one of the busiest and fastest-growing “megaregions” in the country due to its proximity to coastal regions, major airports, and a number of business districts.

Archer Chief Commercial Officer Nikhil Goel described the air taxi experience to CW Houston as “100 times quieter than a helicopter for the price of an Uber Black.” He added that the air taxis are a combination of a helicopter, a small airplane and a drone.

In Houston, Archer’s air taxi network will aim to connect George Bush Intercontinental, William P. Hobby and Sugar Land Regional Airport with downtown destinations, including the Thompson Hotel helipad, and Galveston.

In Austin, it plans to link the city's Austin-Bergstrom International Airport and Austin Executive Airport with the F1 Circuit Helipad at the Circuit of the Americas. Archer debuted its Midnight aircraft at the F1 Prix in the Fan Zone and the F1 Paddock at Austin’s Circuit of the Americas. The Dallas-Fort Worth network is slated to include Dallas-Fort Worth International Airport, Dallas Love Field, Addison Airport, Arlington Municipal Airport, Fort Worth Meacham International Airport and Perot Field Fort Worth Alliance Airport, plus major business hubs like Frisco Station.

“Texas is setting the bar for America’s leadership in the next generation of aviation,” Adam Goldstein, founder and CEO of Archer Aviation, said in the release. “Our planned networks will make the benefits of electric air taxis real for Texans — trading hours in traffic for minutes in the air, while connecting the biggest airports, business districts and sporting hubs in ways that America’s largest megaregion needs to grow.”

Archer is working with state and local partners to develop charging infrastructure and plans to pursue Texas operations through the White House’s eVTOL Integration Pilot Program, according to the release. It recently completed its "No Roads" flight tour, which included multiple flights over the San Francisco Bay, and flew to seven cities over three days.

5 Houston deep tech startups pushing the boundaries of their industries

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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

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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.

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