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Houston plastics circularity center reaches new milestone — and more things to know this week

The Houston area's Cyclyx Circularity Center is one step closer to reality — and more to know this week. Photo courtesy of Cyclyx

Editor's note: It's a new week — start it strong with three quick things to catch up on in Houston's energy transition: an event not to miss, a Q&A to check out, and more.

Circular plastics project in Houston takes one more step toward becoming a reality

Cyclyx International, a joint venture that Houston-based ExxonMobil recently bought into with Agilyx and LyondellBasell, announced that it has made a final investment decision to build the first Cyclyx Circularity Center.

"This milestone is evidence of the real progress we are making to increase the circularity of plastic waste as a resource," Joe Vaillancourt, CEO of Cyclyx, says in a news release. "The first-of-its-kind CCC in Houston will serve as a blueprint, which we can replicate across the U.S. to progress our long-term goal of increasing the recycling options for plastic waste. Cyclyx is proud to be an innovator and enabler for unlocking plastic's potential."

Houston organizations ExxonMobil and LyondellBasell have committed $135 million into Cyclyx to fund operating activities and construction costs, which is expected to begin in mid-2025.

Event not to miss

There's one last energy-related event for the year. On December 19, the UH Tech Bridge's Innov8Hub Pitch Day is your last chance of the year to network with industry experts, and discover the next big thing. Register.

Why Cindy Taff is betting on geothermal

There's no silver bullet to the energy transition, but Cindy Taff of Sage Geosystems is pretty positive geothermal energy is going to be a power player in the mix of technologies sure to make a difference. In a Q&A with EnergyCapital, she explains why she's so optimistic about geothermal and her company's technology — and why the traditional oil and gas industries should take note.

"My extensive experience in both geothermal and the O&G sector is a testament to the synergistic relationship between these industries. The skills honed in O&G are not only transferable—they are essential to advancing geothermal technologies," she tells EnergyCapital. She adds that "the O&G industry can make a huge impact to geothermal by systematically driving down costs while scaling up, which is exactly what we did for unconventional shales." Read the full interview.

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A View From HETI

A rendering of a Quaise Energy geothermal plant. Rendering via quaise.com

Houston-based Quaise Energy, a producer of utility-scale geothermal power, raised $134 million in a Series B round to advance its “superhot” geothermal power plant.

Climate-focused San Francisco-based investment firm Prelude Ventures led the round, with participation from JERA Co., Japan’s largest power generation company, and Idemitsu Kosan, one of Japan’s largest energy companies. Nearly all existing investors, including cleantech-focused investment firm Safar Partners, participated in the round.

“We have backed Quaise since the beginning because we believed accessing superhot rock would unlock geothermal energy at a scale the world has never seen,” Mark Cupta, managing director at Prelude Ventures, said in a press release.

The startup expects more equity and debt deals to close “imminently.” Quaise has raised $230 million since its founding in 2018.

Quaise says some of the fresh funding will go toward building the world’s first commercial-scale “superhot” geothermal power plant —Project Obsidian in central Oregon. In addition, Quaise is earmarking money for continued development and commercialization of its millimeter-wave drilling system toward depths exceeding 5 kilometers (about 16,400 feet).

Quaise uses a millimeter-wave drilling system developed at the Massachusetts Institute of Technology to remove rock at depths and temperatures that aren’t economically feasible with conventional drilling. With this technology, Quaise can reach rock at temperatures of around 570 degrees to 930 degrees in most places worldwide, enabling construction of geothermal systems that rival fossil fuels and nuclear energy in power density and that rival renewables in cost.

“Our ambition is to power civilization with Earth's most compelling energy source. This round takes us from field-proven technology to first commercial revenues,” Carlos Araque, co-founder, president and CEO of Quaise, added in the release.

Quaise has demonstrated the capability of its millimeter-wave drilling system at its Central Texas test site, drilling more than about 330 feet through granite in 2025—the first time the technology penetrated basement rock at full scale in the field. The company is approaching a depth of about 3,300 feet at the same site.

Construction of Project Obsidian is underway at Oregon’s Deschutes National Forest. The project, which has the potential to generate gigawatt-scale power, is slated to deliver electricity to the Pacific Northwest grid by 2030.

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