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.

Kanin Energy set up shop in Greentown Labs last year to grow its impact on the energy transition. Photo via Getty Images

This energy transition startup taps Houston to grow, build its waste-heat-to-power tech

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Waste heat is everywhere, but in Houston, the Energy Capital of the World, it is becoming a hot commodity. What is it? Janice Tran, CEO of Kanin Energy, uses the example of turning ore into steel.

“There’s a lot of heat involved in that chemical process,” she says. “It’s a waste of energy.”

But Kanin Energy can do something about that. Its waste-heat-to-power, or WHP, concept uses a technology called organic rankine cycle. Tran explains that heat drives a turbine that generates electricity.

“It’s a very similar concept to a steam engine,” she says. Tran adds that the best term for what Kanin Energy does is “waste heat recovery.”

Emission-free power should be its own virtuous goal, but for companies creating waste heat, it can be an expensive endeavor both in terms of capital and human resources to work on energy transition solutions. But Kanin Energy helps companies to decarbonize with no cost to them.

“We can pay for the projects, then we pay the customers for that heat. We turn a waste product into a revenue stream for our customer,” Tran explains. Kanin Energy then sells the clean power back to the facility or to the grid, hence decarbonizing the facility gratis. Financing, construction, and operations are all part of the package.

Kanin Energy began at the height of the COVID-19 pandemic, in the spring of 2020.

“We started like a lotus. A lotus grows in mud — you start in the worst conditions and everything is better and easier from there,” says Tran.

That tough birth has helped provide the team with a discipline and thoughtfulness that’s been key to the company’s culture. Remote work has forced the team to get procedures clearly in place and react efficiently.

Back in May of 2020, its inception took place in Calgary. But the team, which also includes CDO Dan Fipke and CTO Jake Bainbridge, began to notice that many of their customers were either based in Houston or had Houston ties.

A year ago, the Kanin team visited Houston to see if the city could be a fit for an office. In July of 2022, Tran opened Kanin Energy offices in Greentown Labs.

“We’re hiring and building our team office out of Greentown. It’s been really great for us,” she says.

With the company now in its commercialization stage, Tran says that becoming part of the Houston energy ecosystem has been invaluable for Kanin.

The investments being made in climate tech and in energy transition make Space City the right place for the company. For Canadian-born Kanin Energy, Houston is now home. Investors across the nation, including Texas, are now helping Kanin to blossom, much like the lotus.

Janice Tran is the CEO and co-founder of Kanin Energy. Photo via LinkedIn

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This article originally ran on InnovationMap.

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UH launches latest micro-credential program focused on energy risks

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UH Energy at the University of Houston will launch a new micro-credential program this fall focused on risks associated with today's changing energy landscape.

The new self-paced, hybrid program, known as Managing Non-Technical Risks in Energy, is geared towards energy professionals and those who aspire to work in the industry. Enrollment must be completed by Sept. 15 to participate.

According to UH, it will equip participants with "tools, strategies, and real-world insights needed to lead confidently" as they face pressure to meet increased energy demand while also operating under sustainable guidelines.

The program will be led by expert instructors, including:


  • Suryanarayanan Radhakrishnan, Managing Director of UH Energy
  • Amy Mifflin, Principal Consultant and Partner at Sustrio Inc.
  • Chris Angelides, Honorary Consul of The Republic of Cyprus to Texas, Managing Director at Ernst & Young LLP
  • Carolina Ortega, Vice President, Sustainability and Communications at Milestone Environmental Services
  • Krish (Ravi) Ravishankar, Senior Director ESG Analytics & Reporting, Sustainability, Worldwide Environmental Affairs at Oxy

Participants can earn up to three "badges" through the program. Each badge consists of two modules, which can be completed virtually and take about 10 hours to complete over four weeks.

Each module will also include one in-person engagement session that will last about two hours.

The three badges include:


  • Badge 1: Managing Environmental and Social Risks and Impacts
  • Badge 2: Frameworks, Standards, and Implementation
  • Badge 3: Advanced Applications

Badges can be earned individually or as a series of three, and participants must complete assessments to earn each badge.

Badge 1 Module 1 will start on Sept. 15, followed by Badge 1 Module 2 on Oct. 20. Find more information here.

Expert on powering Texas: The promise and challenges of renewable energy

Guest Column

Texas leads the nation in wind and solar energy, but that leadership is being tested as a surge in project cancellations raises new concerns about the future of renewables in the state.

While Texas clean energy has grown significantly in recent years, solar and wind often fall short of meeting peak electricity demand. As extreme weather, rising demand, and project cancellations strain the grid, Texas must confront the growing gap between renewable potential and real-time reliability.

Solar and Wind Energy

Solar generation in the Lone Star State has grown substantially over the past decade. The Texas solar industry is estimated to employ over 12,000 Texans and is contributing billions in local tax revenue and landowner income, and solar and storage are the largest sources of new energy on the Texas grid.

With a significant number of sunny days, Texas’ geography also enables it to be among the states with the greatest energy potential for solar power generation. Further moving to advance the use of solar energy generation, the 89th Texas legislature passed SB 1202 which accelerates the permitting process for home solar and energy storage installations. SB 1202 empowers homeowners to strengthen their own energy security and supports greater grid resilience across the state.

Texas has also led the United States in wind energy production for more than 17 years, with 239 wind-related projects and over 15,300 wind turbines, which is more than any other state. The economic impact of wind energy in Texas is substantial, with the industry contributing $1.7 billion a year to the state’s gross domestic product. With wind electric power generation jobs offering an average annual wage of $109,826, the growing sector provides lucrative employment opportunities.

However, solar and wind currently struggle to meet Texas’ peak electricity demand from 5 pm to 7 pm — a time when millions of residents return home, temperatures remain high and air conditioner use surges. Solar generation begins to decline just as demand ramps up, and wind production is often inconsistent during these hours. Without sufficient long-duration storage or dispatchable backup power, this mismatch between supply and demand presents a significant reliability risk — one that becomes especially urgent during heat waves and extreme weather events, as seen during ERCOT conservation alerts.

Geothermal Energy

Geothermal energy uses heat from beneath the Earth’s surface to provide reliable, low-emission power with minimal land use and no fuel transport. Though it currently supplies a small share of energy, Texas is emerging as a leader in its development, supported by state leaders, industry, and environmentalists. During the 89th legislative session, Texas passed HB 3240 to create a Geothermal Energy Production Policy Council, set to begin work on September 1, 2025.

In 2024, Sage Geosystems was selected to develop geothermal projects at the Naval Air Station in Corpus Christi, expanding its work with the Department of Defense. In partnership with the Environmental Security Technology Certification Program, Sage is using its proprietary Geopressured Geothermal Systems technology to evaluate the potential for geothermal to be a source of clean and consistent energy at the base.

One limitation of geothermal energy is location. Deep drilling is costly, and areas with high water tables, like some coastal regions, may not be viable.

Hydroelectric Energy

While hydropower plays a minor role in Texas’ energy mix, it is still an essential energy source. Its output depends on water availability, which can be affected by seasonal and long-term changes like droughts.

Texas has 26 hydropower plants with a total capacity of nearly 738 megawatts, serving about 2.9 million people as of 2019. Harris County holds 43% of all hydropower generation jobs in the state, and in 2021, hydroelectric power generation contributed $700 million to Texas’ gross domestic product.

Federal funding is helping expand hydropower in Texas. The Southwestern Power Administration has committed about $103 million to support infrastructure, including $32 million for upgrades to Central Texas’s Whitney Dam. The 2021 Inflation Reduction Act added $369 billion in tax credits for clean energy, supporting dam retrofits nationwide. In 2022, the Department of Energy launched over $28 million in new funding through the Infrastructure Law to help meet national clean energy goals by 2035 and carbon neutrality by 2050.

Tidal Energy

Driven by the moon and sun, tidal energy is predictable but limited to coastal areas with strong tides. Although Texas has modest tidal potential, research is ongoing to optimize it. Texas A&M University is developing a floating test platform for hybrid renewable systems, integrating tidal, wave, wind, and solar energy. In addition, St. Mary’s University in San Antonio is prototyping small-scale tidal turbines using 3D printing technology.

While commercial tidal power remains in the research phase, the state’s offshore capabilities, engineering talent, and growing university-led innovation could make it a player in hybrid marine renewable systems. Floating platforms that integrate wave, tide, solar, and wind offer a compelling vision for offshore power generation suited to Texas’ unique coastal conditions.

Biomass Energy

Biomass energy is the largest renewable source worldwide, providing 55% of renewables and over 6% of global energy. While reliable, it can be less efficient, sometimes using more energy to burn the organic matter than it produces, and demand may exceed supply.

In Texas, biomass is a nominal part of the state’s energy portfolio. However, substantial research is being conducted by Texas A&M University to attempt to convert algae and food waste into a cost-efficient source of biomass material. In addition, UK-based biomass and renewable energy company Drax opened its North American headquarters in Houston, which created more than 100 new jobs in Texas’ renewable energy industry.

It’s clear that renewable energy is playing an increasingly important role in shaping Texas’ energy future. But the road ahead demands a realistic view: while these sources can reduce emissions and diversify our generation mix, they do not yet solve for peak load reliability — especially during the critical 5 pm to 7 pm window when grid stress is highest.

Meeting that challenge will require not just investment in renewables, but also innovation in grid-scale storage, flexible generation, market reform and consumer programs. A diversified, resilient energy portfolio — one that includes renewables and reliable dispatchable sources — will be the key to ensuring that Texas remains powered, prepared and prosperous for generations to come.

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Sam Luna is director at BKV Energy, where he oversees brand and go-to-market strategy, customer experience, marketing execution, and more.