Houston startup gears up to deliver geothermal energy

ready to drill

Criterion Energy Partners is aiming to be a next-gen energy company. Photo via Getty Images

Sean Marshall and Danny Rehg founded Criterion Energy Partners in 2020 with the hope that geothermal energy could be the cleaner, safer wave of the future. Less than three years later, the team is close to making their plan a reality thanks to a geothermal well that they hope to drill this year.

Entrepreneurship wasn’t always part of the plan for either partner. When Marshall enrolled in the MBA program at Rice University’s Jones School of Business in 2016, he had a successful career at Credit Suisse and had his eye set on a future political career. But then he met classmate Rehg, whose background was in petroleum engineering. Their wives were both attorneys in the Houston district attorney’s office and the couples became fast friends. They also realized that, as Marshall now puts it, Rehg knew how to drill wells and he knew how to make deals.

In the ensuing years, both Rehg and Marshall's careers evolved and, eventually, the pair started looking for other opportunities. That’s when they read an article in Rolling Stone about geothermal energy.

“It was really a place where it really felt like this was something we were put here to do,” says Marshall.

Marshall and Rehg spent the ensuing months “like rats in a dumpster” learning about the players and opportunities in the geothermal industry and built from there. They learned about Pleasant Bayou Power Plant, a 1989 geothermal energy project based in Brazoria County that was backed by the U.S. Department of Energy.

Last summer, Criterion Energy Partners, a member of Greentown Houston, closed on a 10,000-acre lease around the site of Pleasant Bayou.

"We hope by the end of this year we will be generating electrons,” says Marshall.

Though the company has a patented technology that connects wells to the grid, called Criterion Geothermal System, Marshall says that some of the best advice he’s gotten was, “Don’t fall in love with your technology; fall in love with the problem.” The 2021 Texas freeze reminded the founders what that was.

“People were looking for cleaner, lower-emission power sources and [there was] a need for energy resiliency,” says Marshall, explaining that the freeze created an ideal situation for the company, as people began to think more outside the grid.

The year 2022 was a big one for Criterion Energy Partners. Oil and gas powerhouse Patterson-UTI invested in the company, followed by funding from the Department of Energy. The money not only allowed Criterion Energy Partners to lease their land, they are also now paying 12 salaries, including those of the founders. The team offices in The Cannon’s Esperson coworking space.

“Our mission is to make geothermal commercially viable everywhere,” says Marshall. “I still believe in that.”

However, Criterion Energy Partners may be even bigger than proving an alternative energy source. Marshall says that geothermal is the foundation on which they are building “a next-generation energy company.” Criterion Energy Partners could be the more stable basis for a whole new energy system.

Sean Marshall and Danny Rehg founded Criterion Energy Partners in 2020. Photos courtesy

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This article originally ran on InnovationMap.

Here's what startups took home wins at CERAWeek. Photo by Natalie Harms/InnovationMap

8 energy tech startups recognized at Houston's CERAWeek pitch competition

taking home the W

Over 200 startups participated in CERAWeek this year, and 18 of those companies pitched at a Greater Houston Partnership event.

The Houston Energy Transition Initiative, an initiative to promote Houston's work within the energy transition, hosted its second annual HETI Energy Ventures Competition at CERAWeek Innovation Agora. The competition was divided into four categories. The first batch of startups consisted of five companies from the Texas Entrepreneurship Exchange for Energy, or TEX-E, a collaboration with Greentown Labs, MIT’s Martin Trust Center for Entrepreneurship, and universities across Texas.

The winning startups shared $50,000 of prizes, sponsored by TEX-E. Houston-based Helix Earth Technologies — which has developed high-speed, high-efficiency filter systems derived from technology originating at NASA — won both the first place prize and fan favorite for the category. Helix's co-founders, Rawand Rasheed and Brad Husick from Rice University, walked away with $25,000 in prizes

Founded by Bryon Praslicka, Daniel Zamarron, and Craig Newman from Texas A&M University, Flux Works LLC, and its magnetic gear technology, took second place and $15,000 home. Tierra Climate, a two-sided marketplace for carbon offsets and other sustainability efforts founded by Emma Konet and Jacob Mansfield from Rice University, won third place and $10,000.

Helix Earth Technologies walked away with the top prize of the TEX-E category. Photo via greentownlabs.com

The next sets of startup pitches we broken down by funding stages — pre-seed and seed, series A, and series B and beyond.

Red Shift Energy, uses plasma energy to produce hydrogen from hydrogen sulfide, won fan favorite in the pre-seed and seed category sponsored by HX Venture Fund. A member of Halliburton Labs, the company also was recognized as Chevron favorite.

Per the judging panel, CanaGas won the title of most promising in the pre-seed and seed category sponsored by Alchemy Industrial. The Canadian company liquifies natural gas without costly cryogenics or stripping of the gas.

Houston-based Criterion Energy Partners won both the most-promising series A company category sponsored by SLB, but also the fan favorite series A category sponsored by Guerrella LLC. A geothermal energy tech company, Criterion was also a member of Rice's inaugural Clean Energy Accelerator cohort.

OptiSeis Solutions also won in both categories for the series B track. The company, a geophysical acquisition design and software company, won the title of most promising in the series B category sponsored by Pana LCE Investments and the series B fan favorite category sponsored by Halliburton Labs.

Lastly, the competition named the Most Impactful DEI, a category sponsored by Pana LCE Investments. Austin-based Gazelle Ecosystems, a social innovation startup with eco-solutions for corporations, won that category.

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This article originally ran on InnovationMap.

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Energy startup Base Power raises $1 billion series C round

fresh funding

Austin-based startup Base Power, which offers battery-supported energy in the Houston area and other regions, has raised $1 billion in series C funding—making it one of the largest venture capital deals this year in the U.S.

VC firm Addition led the $1 billion round. All of Base Power’s existing major investors also participated, including Trust Ventures, Valor Equity Partners, Thrive Capital, Lightspeed Venture Partners, Andreessen Horowitz (a16z), Altimeter, StepStone Group, 137 Ventures, Terrain, Waybury Capital, and entrepreneur Elad Gil. New investors include Ribbit Capital, Google-backed CapitalG, Spark Capital, Bond, Lowercarbon Capital, Avenir Growth Capital, Glade Brook Capital Partners, Positive Sum and 1789 Capital Management.

Coupled with the new $1 billion round, Base Power has hauled in more than $1.27 billion in funding since it was founded in 2023.

Base Power supplies power to homeowners and the electric grid through a distributed storage network.

“The chance to reinvent our power system comes once in a generation,” Zach Dell, co-founder and CEO of Base Power, said in a news release. “The challenge ahead requires the best engineers and operators to solve it, and we’re scaling the team to make our abundant energy future a reality.”

Zach Dell is the son of Austin billionaire and Houston native Michael Dell, chairman and CEO of Round Rock-based Dell Technologies.

In less than two years, Base Power has developed more than 100 megawatt-hours of battery-enabled storage capacity. One megawatt-hour represents one hour of energy use at a rate of one million watts.

Base Power recently expanded its service to the city of Houston. It already was delivering energy to several other communities in the Houston area. To serve the Houston region, the startup has opened an office in Katy.

The startup also serves the Dallas-Fort Worth and Austin markets. At some point, Base Power plans to launch a nationwide expansion.

To meet current and future demand, Base Power is building its first energy storage and power electronics factory at the former downtown Austin site of the Austin American-Statesman’s printing presses.

“We’re building domestic manufacturing capacity for fixing the grid,” Justin Lopas, co-founder and chief operating officer of Base Power, added in the release. “The only way to add capacity to the grid is [by] physically deploying hardware, and we need to make that here in the U.S. ... This factory in Austin is our first, and we’re already planning for our second.”

ExxonMobil postpones $10B plastics manufacturing plant

plastics project postponed

Spring-based ExxonMobil is postponing development of a $10 billion plastics manufacturing plant along the Gulf Coast. Construction on the plant, to be located near Port Lavaca, was supposed to begin next year.

“Based on current market conditions, we are going to slow the pace of our development for the Coastal Plain Venture,” ExxonMobil confirmed in an emailed statement. “We’re confident in our growth strategy, and we remain interested in a potential project along the U.S. Gulf Coast and in other regions around the world. We’re maintaining good relationships with community leaders and contractors, so we are ready to reevaluate the project’s status when market conditions improve.”

According to Independent Commodity Intelligence Services, the Coastal Plain project was preliminary, and ExxonMobil had not yet announced its decision about building a plant for polyethylene production. Polyethylene, the world’s most common plastic, is used in a variety of products, such as bags, bottles, food containers, automotive components, medical tubes, IV bags, children’s toys and cutting boards.

The Coastal Plain postponement follows a judge’s ruling in August that invalidated a decision by Calhoun County ISD board members to negotiate tax breaks with ExxonMobil, according to Inside Climate News. The judge made the ruling in a case filed by environmental activist Diane Wilson and her nonprofit group, San Antonio Bay Estuarine Waterkeeper.

Wilson told Inside Climate News that she thought public opposition played a part in ExxonMobil postponing the Coastal Plain project.

“I think if everybody had just rolled over for them, if they got exactly what they wanted (tax breaks) and there wasn’t a big fight, there would be no delay,” Wilson said.

KBR shifts sustainability focus with planned spinoff

seeing green

Houston-based KBR, a provider of technology and engineering services for government and private-sector customers, is pursuing a tax-free spinoff of its Mission Technology Solutions business as a public company. Following the spinoff, KBR would remain a public company.

The new company, nicknamed SpinCo, would focus on technology and engineering services for the space and national security sectors. The scaled-down KBR, nicknamed RemainCo, would concentrate solely on sustainability technology and services designed to reduce carbon emissions and support energy transition efforts.

According to the company, RemainCo, or New KBR, will is positioned to serve the ammonia and syngas, chemical and petrochemicals, clean refining, and circular economy markets.

Stuart Bradie, chairman, president and CEO of KBR, said that from July 2024 to July 2025, the Mission Technology Solutions segment generated revenue of $5.8 billion. During the same period, the Sustainability Technology Solutions segment posted revenue of $3.7 billion.

KBR has forecast fiscal year 2025 revenue of $8.1 billion, up from $7.7 billion during the previous fiscal year. The company’s 2026 fiscal year starts in January.

In a news release, KBR said SpinCo and the restructured KBR would “deliver long-term profitable growth and value for customers, associates, and shareholders.”

“Our team has successfully built two leading businesses with the necessary scale and strong financial profile to enable us to take this next exciting step,” Bradie told Wall Street analysts.

Over the past decade, Bradie said, KBR has evolved into “a leading provider of differentiated, innovative, up-market science, technology, and engineering solutions with global scale, global reach, and global impact.” The spinoff would create two public companies that’ll “unlock the next phase of value creation,” he added.

Bradie will be chairman, president, and CEO of the newly configured KBR, while Mark Sopp, KBR’s executive vice president and chief financial officer, will transition to oversight of the Mission Technology Solutions spinoff. Effective Jan. 5, Shad Evans will succeed Sopp as CFO of KBR. He currently is KBR’s senior vice president of financial operations.

Bradie said an executive search firm has been hired to identify candidates for the CEO and CFO roles at SpinCo.

The spinoff is expected to be completed in mid- to late 2026.

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