Innovative Houston-based CO2 capture company gets acquired

M&A moves

Milestone Carbon has leased more that 22,000 acres of land in the Permian Basin for the permanent geologic sequestration of CO2. Photo via milestone-es.com

Houston-based Milestone Environmental Services announced this month that it has been acquired by affiliates of SK Capital Partners for an undisclosed amount.

The New York-based private investment firm, which specializes in the materials, ingredients, and life sciences sectors, now has a controlling stake of Milestone, which will continue to be led by its president and CEO Gabriel Rio.

Rio founded Milestone in 2014. The company is one of the largest independent providers of waste management services for the U.S. energy and industrial sectors. It focuses on permanent carbon sequestration services through its proprietary slurry injection process, which stores hydrocarbon waste over a mile underground.

The company's subsidiary, Milestone Carbon, is developing injection sites that permanently and securely sequester CO2. Earlier this month, Milestone Carbon announced that it has leased more that 22,000 acres of land in the Permian Basin for the permanent geologic sequestration of CO2 as part of the "sequestration hub" it is developing.

According to the company, once operating, the hub will help reduce emission related to natural gas processing, electricity generation and other industries. It's slated to be one of the first sequestration hubs in the basin.

"We founded Milestone to boldly advance sustainability in the energy industry and beyond," Rios says in a statement. "Our offerings enable companies to reduce their carbon footprint and enhance their ability to meet sustainability goals. Permanent, safe sequestration of carbon is an essential part of combating climate change, and Milestone has the strategy and capabilities to play a leading role in delivering solutions to multiple industries.”

According to a statement, Milestone has sequestered more than 2 million tons of CO2e through its injection process. The company has stated that it believes its sequestration hub will help attract new industries and technologies, hydrogen, low-carbon ammonia, and low-carbon power, to West Texas.

"We are highly impressed with the market-leading, sustainability-driven business that Gabriel and the Milestone management team have built," Jack Norris, a managing director of SK Capital, said in a statement. "It is well-positioned to further grow its core business in difficult-to-abate industries as environmental regulations become more stringent and Milestone’s customers are increasingly focused on meeting ambitious decarbonization targets. We are excited to partner with management to capture this growth opportunity as well as support its further progress towards becoming a leader in CCS and other related markets.”

Earlier this summer, Houston-based Occidental also got in on a carbon capture acquisition. Occidental says its all-cash acquisition of Carbon Engineering is set to close by the end of 2023. The Canada-based company focuses on direct carbon capture (DAC), which vacuums about 50 percent to 60 percent of the carbon dioxide from the air that passes through the system’s fans.

Oxy was granted $600 million from the U.S. Department of Energy to develop South Texas Direct Air Capture (DAC) Hub earlier this year. It’ll be located on about 106,000 leased acres within a Kleberg County site at the iconic King Ranch. The hub will comprise 30 individual DAC projects.

The U.S. Department of Energy also recently invested more than $10 million in funding for four DAC projects with Houston ties.

Occidental says its all-cash acquisition of Canada-based Carbon Engineering is set to close by the end of 2023. Photo via carbonengineering.com

Oxy acquires carbon capture co. in $1.1B deal

betting on dac

In yet another bet on direct carbon capture (DAC), Houston-based Occidental has agreed to purchase a DAC technology company for $1.1 billion.

Occidental says its all-cash acquisition of Canada-based Carbon Engineering is set to close by the end of 2023. Carbon Engineering was founded in 2009.

Under the deal, Carbon Engineering would become a wholly owned subsidiary of Oxy Low Carbon Ventures, the investment arm of Occidental. Carbon Engineering employees will work with teams at Occidental and its low-carbon subsidiary, 1PointFive, on DAC technology. The company’s R&D and innovation units will remain in Squamish, British Columbia.

Occidental has been a key DAC partner of Carbon Engineering since 2019.

“We look forward to continuing our collaboration with the Carbon Engineering team, which has been a leader in pioneering and advancing DAC technology,” Vicki Hollub, president and CEO of Occidental, says in an August 15 news release. “Together, Occidental and Carbon Engineering can accelerate plans to globally deploy DAC technology at a climate-relevant scale and make DAC the preferred solution for businesses seeking to remove their hard-to-abate emissions.”

Billionaire Warren Buffett’s Berkshire Hathaway conglomerate owns about one-fourth of the shares of publicly traded Occidental.

In conjunction with Carbon Engineering, Occidental’s 1PointFive is building Stratos, the world’s largest DAC plant. The Ector County facility, scheduled to begin operating in mid-2025, is projected to extract up to 500,000 metric tons of carbon dioxide from the air each year. It’s anticipated that Stratos will employ more than 1,000 people during construction and up to 75 people once the plant is up and running.

Occidental and Carbon Engineering are adapting Stratos’ engineering and design features for a DAC plant to be built on a site at South Texas’ King Ranch. The South Texas DAC Hub, which is on track to create about 2,500 jobs, recently received a roughly $600 million grant from the U.S. Department of Energy (DOE).

1PointFive plans to open as many as 135 DAC facilities around the world by 2035, with the capacity to capture 100 million metric tons of carbon dioxide (CO2) per year.

DAC technology pulls carbon dioxide emissions from the atmosphere at any location and permanently stores the CO2 or uses it for other purposes. By contrast, carbon capture sucks carbon dioxide from the air near where emissions are generated and then permanently stores the CO2 or uses it for other purposes.

A DAC system vacuums about 50 percent to 60 percent of the carbon dioxide from the air that passes through the system’s fans.

DAC “is shaping up to be a key component of meeting net-zero emissions goals in the United States,” according to the National Renewable Energy Laboratory.

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Rice scientist receives $2 million award for research on 'new type of fuel'

winner, winner

Rice University chemistry professor László Kürti was named as a recipient of the 2025 Ross M. Brown Investigator Award from the California Institute of Technology’s Brown Institute for Basic Sciences.

Kürti is one of eight mid-career faculty members to receive up to $2 million over five years for their research in the physical sciences.

“I’m greatly honored,” Kürti said in a news release. “We will learn a tremendous amount in the next five years and gain a much clearer understanding of the challenges ahead.”

Kürti was selected for the research he’s been developing for six years on a molecule called tetrahedral N4, which studies show can release large amounts of energy on demand. The molecule can also decompose directly into nitrogen gas without producing carbon dioxide or water vapor. Kürti believes N4 can be used as a "new type of fuel for vehicles."

“Eventually, N4 and other stable, neutral polynitrogen cages could be used to power rockets, helping us reach the moon or Mars faster and with heavier payloads,” he added in this release.

The Brown Investigator Awards were founded by entrepreneur and Caltech alumnus Ross M. Brown and established by the Brown Science Foundation in 2020. The organization has recognized 21 scientists over the last five years.

“Midcareer faculty are at a time in their careers when they are poised and prepared to make profound contributions to their fields,” Brown said in the news release. “My continuing hope is that the resources provided by the Brown Investigator Awards will allow them to pursue riskier innovative ideas that extend beyond their existing research efforts and align with new or developing passions, especially during this time of funding uncertainty.”

6 Houston energy transition events to attend in June 2025

Mark Your Calendar

Editor's note: June has arrived, and with it more must-attend events in the energy transition sector. Mark your calendar today for these conferences, symposiums, summits, expos, and more.

June 4 - Energy Capital Conference

Join 300-plus corporate leaders, financial executives, and institutional investors across the energy sector. Capital partners and energy experts will share market and sector trends, insights, and look ahead to what to expect over the next decade. This conference is now in its third decade.

This event takes place June 4 at the Post Oak Hotel. Click here to register.

June 4-5 — 2025 AWS Energy Symposium

The fourth annual AWS Energy Symposium is the premier AWS event for the energy industry. Hear from leading energy and utility customers, partners, and startups about how they're using AWS to scale innovation and transform their organizations. The event is invitation only and is geared toward senior leaders and director-level executives from across the energy value chain. Click here to submit a registration request.

June 11-12 — Energy Projects Conference & Expo

The Energy Projects Conference & Expo (EPC Show) is the largest event in North America for professionals working at the heart of major energy projects. The show will bring together five leading conferences under one roof for the first time, uniting 3,000-plus engineering, construction, commissioning, supply chain, operations, and maintenance professionals. Conference subjects span LNG exporting, hydrogen and ammonia, midstream, petrochem and refining, and sustainable aviation fuels.

This event begins June 11 at the George R Brown Convention Center. Click here to register.

June 12 - Transition on Tap

Head to Greentown Labs for this casual networking event, where some of the incubator's newest members will be introduced. Hear lightning pitches from these startups that are working on climate solutions across industries. Following the pitches, guests will network with fellow entrepreneurs, investors, leaders, and other climate champions.

This event takes place June 12 at Greentown Labs. Click here to register.

June 16-18 - Energy Drone & Robotics Summit

This three-day summit, the largest of its kind, will connect 1,500-plus leaders in the global energy/industrial robotics, drone and data sectors. Attendees will glean the latest ideas, use cases, best practices, tech, and trends from a wide variety of robotics and drone industry experts.

This event begins June 16 at Woodlands Waterway Marriott. Click here to register.

June 25-26 — Carbon Capture Technology Expo

Tackling climate change is one of the biggest global challenges that requires immediate action, and many industrial sectors are now looking to new technology to help meet net-zero emission targets. The Carbon Capture Technology Expo is North America's leading event for carbon capture, utilization, and storage. The expo offers opportunities to network with industry frontrunners and best-in-class solution providers.

This event begins June 25 at NRG Center. Click here to register. It is co-located with the Hydrogen Technology Conference & Expo North America. Expo passes are free.

Greentown Labs combines forces with MassChallenge to support more climate startups

strategic partnership

Climatetech incubator Greentown Labs has formed a strategic partnership with global zero-equity accelerator MassChallenge.

The two organizations have headquarters in the Boston area, while Greentown Labs is also co-located in Houston. MassChallenge has a hub in Dallas, as well as others in Israel, Switzerland and the United Kingdom.

The new partnership aims to strengthen the ecosystem for early-stage climatetech startups by providing more mentorship, support and a broader commercialization network for members, according to a news release.

Greentown Labs will share its expertise with the 23 startups in MassChallenge's first climate-specific accelerator, known as the MassChallenge Early Stage Climate program. Additionally, Greentown Labs members will benefit from MassChallenge's network of expert mentors, judges, entrepreneurs, partners, investors, philanthropists and others.

“There are so many synergies and shared values between MassChallenge and Greentown that launching a collaboration like this feels like a natural next step for our organizations as we strive to support as many early-stage climate founders as possible,” Georgina Campbell Flatter, Greentown Labs CEO, said in the news release. “We want to reduce the friction and barriers to market for these climate entrepreneurs and ultimately increase their opportunity for success—ecosystem collaboration is an essential part of solving these challenges together.”

Combined, Greentown and MassChallenge report that they have supported more than 4,500 founders and more than 1,000 climate startups. MassChallenge has awarded more than $18 million in equity-free grants to startups, which have gone on to raise over $15 billion, since it was founded in 2009. Greentown Labs has helped more than 575 startups raise more than $8.2 billion in funding since it launched in 2011.

Greentown recently added five startups to its Houston community and 14 other climatetech ventures to its Boston incubator. It also announced its third ACCEL cohort, which works to advance BIPOC-led startups in the climatetech space, earlier this year. Read more here.

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