University of Houston students Sarah Grace Kimberly and Emma Nicholas won UH Energy Transition Institute's inaugural Circular Plastics Challenge. Photo via UH.edu

Dozens of Houston college students tackled circular economy challenges, and two came out on top by winning the top award.

University of Houston’s Energy Transition Institute hosted a challenge for students to address the issue of plastic waste and create a real-world circular economy, as over 60 students participated in the inaugural Circular Plastics Challenge.

Six finalist teams presented their solutions at the 2023 Energy Night hosted by the UH Energy Coalition with final pitches ranging from transportation emissions, renewable packaging and sustainable material, drones to limit excess packaging, and more topics aimed to reduce use.

Sarah Grace Kimberly and Emma Nicholas were the challenge winners. The team proposed using a liquid-based membrane filter inserted into household drains to combat microplastics found in common personal care products, such as makeup and hygiene items. The membrane’s function would act as a magnet, which would attract and capture microplastics from wastewater in showers and sinks. Both juniors from the C.T. Bauer College of Business also won the viewer’s choice award from their peers.

“We wanted to provide a simple solution to a growing problem,” Kimberly says in a news release. “Before we did this project, we didn’t know that microplastics existed, let alone in our makeup. I didn’t know I was basically putting plastic on my face every single day and washing it off into our drains. Because it’s an unseen problem, it’s hard to address.”

UH’s ETI is an academic research institute that focuses on advancing environmentally responsible energy efforts.

“If you look at the wide variety of proposals and approaches, you can see the complexity of the problem and all the different things that society must consider to find solutions,” ETI Founding Executive Director Joe Powell says in the release. “I think circularity in plastics and chemicals is as difficult to address as the net-zero issue within the energy sector, if not more. We have a unique opportunity here to tackle both, and it’s really great to see our students thinking ahead.

Other finalists included Wolff Center for Entrepreneurship seniors Nicolas Einarsson, Bennett Mainini, Arianna Chavarria, and Fernanda Ruelas, who secured second place with their renewable packaging company presentation titled “ShipSafe.”

Reverse Logistics — with team members Hasti Seraji, Farzane Ezzati, and Haowei Yang — earned third place for their consumer-driven reverse logistics approach to recycling packaging.

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Houston company lands first deal from new Blackstone energy transition fund

M&A activity

Asset manager Blackstone has agreed to buy Houston-based Dresser Utility Solutions from Connecticut private equity firm First Reserve for an undisclosed amount. First Reserve has a major presence in Houston.

The deal represents the first investment from Blackstone Energy Transition Partners V.

“Blackstone’s deep resources and experience in the utility sector make them an ideal partner as we continue to invest in innovation, expand our product portfolio, and deliver value for our customers,” Dresser CEO David Evans said in a news release.

Founded in 1880, Dresser provides metering technology, digital instrumentation and software, pressure and flow controls, and infrastructure repair products for gas and water utilities and industrial customers. The company employs about 850 people worldwide.

“As demands on the energy grid continue to grow, Dresser plays a critical role as a trusted partner to utilities managing essential infrastructure. The company’s products are foundational to the safe and reliable operation of gas and water networks, and its reputation for quality has helped build longstanding customer relationships,” David Foley, global head of Blackstone Energy Transition Partners, and JP Munfa, senior managing director, said in the release.

Blackstone Energy Transition Partners has invested more than $28 billion across the energy transition sector. New York-based Blackstone closed Blackstone Energy Transition Partners Fund IV at $5.6 billion in February 2025. Blackstone Energy Transition Partners Fund III closed in 2020 for $4.4 million, according to Pitchbook.

Other notable energy transition investments from Blackstone funds include Salt Lake City-based Energy Exemplar, French electronics manufacturing company Sediver, Plano-based Westwood Professional Services and others.

Two years ago, Dresser secured a $335 million credit facility from funds managed by asset manager Blue Owl Capital. At the time, Dresser said the money would go toward capital expenses, acquisitions and corporate needs.

This is the second notable investment Blackstone has made in a Houston-based energy company in recent months. In May, Blackstone and energy heavyweight Halliburton made a $1 billion equity investment in Houston power generation startup VoltaGrid, which provides behind-the-meter mobile power generation equipment for data centers, microgrids and industrial customers.

Houston cleantech startup closes $17M round to tap into hot geothermal sector

fresh funding

Houston-area startup Hephae Energy Technology Corp. has closed a $17.8 million Series A financing round to commercialize its geothermal technology.

The round was co-led by Pennsylvania-based Susquehanna Sustainable Investments, which invests in early-stage climatech companies, and Copenhagen-based Underground Ventures, which focuses on geothermal energy startups. Alfa8, Baruch Future Ventures, Centaurus Capital LP, Elemental Impact, Exa Ventures, Future Ventures, Grantham Foundation for the Protection of the Environment, New System Ventures and True North Institute joined the round, along with existing Houston-based investor Nabors Industries. Hyphae reports in a news release that the Series A round brings the company's total capital raised to $24.7 million.

Hephae develops ultra-high-temperature downhole sensing, measurement, communications and control systems that can withstand the heat of geothermal sites, which are hotter and deeper than traditional oil and gas reservoirs. The company's Pandora210 system can operate at up to 400 degrees Fahrenheit.

Hephae reports that it plans to use the new funding to commercialize its Pandora210 tool and to launch research and development into systems that can withstand temperatures of up to 570 degrees Fahrenheit. Houston-based Fervo Energy, for instance, recently tapped its hottest geothermal well to date in western Utah, showing temperatures above 555 degrees Fahrenheit.

"Commercial deployment represents a major milestone in our mission to scalable, always-on, emission-free power globally, with a world-class team to tackle this problem," Steve Krase, CEO of Hephae Energy Technology, said in the release." This investment enables Hephae to transition from development to scale, delivering the ultra-high temperature drilling technologies needed to support the rapid growth of the geothermal industry in the US and international markets."

Hephae has been collaborating with Fervo Energy in the field. The company told the Houston Business JournalHouston Business Journal this spring that it expected its Pandora210 technology to be deployed at its Utah sites.

“Fervo is encouraged by the early progress of our collaboration with Hephae, whose novel high-temperature innovations have the potential to contribute positively to EGS economics, unlock higher-energy geothermal resources, and further cement the competitiveness of next-generation geothermal power," Elliot Howard, director of drilling and completions at Fervo, added in the release.

As the geothermal industry continues to scale, Hephae says it aims for its technology to help companies "unlock hotter, deeper resources that result in lower produced energy costs."

The Spring-based startup was founded in 2020 by CEO Steve Krase and CTO John Clegg. Krase previously launched Navigate Energy Services, which was acquired by Nabors in 2013. Clegg is also an industry veteran and has held numerous leadership positions at energy companies, including Weatherford, NOV, Schlumberger and others.