SLB now owns 80 percent of Aker Carbon Capture, with Aker retaining a 20 percent stake. Photo via Getty Images

Houston-based energy technology company SLB has finalized its purchase of a majority stake in Norway’s Aker Carbon Capture, a provider of industrial-scale carbon capture and sequestration (CCS) technology.

SLB now owns 80 percent of Aker Carbon Capture, with Aker retaining a 20 percent stake.

In March 2024, SLB said it would pay roughly $388 million for the 80 percent stake in Aker and contribute its carbon capture business to the joint venture. In addition, SLB said it might pay close to $130 million over the next three years if the joint venture meets certain performance benchmarks.

“There is no credible pathway toward net zero without deploying carbon capture and sequestration (CCS) at scale,” Gavin Rennick, president of SLB’s New Energy business, says in a news release. “In the next few decades, many industries that are crucial to our modern world must rapidly adopt CCS to decarbonize. Through the joint venture, we are excited to accelerate disruptive carbon capture technologies globally.”

The joint venture combines Aker’s Advanced Carbon Capture technologies — including Just Catch and Big Catch modular technology for midsize and large facilities, and Just Catch Offshore for offshore gas turbines — with SLB’s technology portfolio.

“There is no business as usual in the push toward net zero — we will accelerate decarbonization today and commercialize innovative technologies for the future,” says Egil Fagerland, newly appointed CEO of the Norway-based joint venture.

Last fall, SLB and Aker Solutions teamed up with Luxembourg-based energy engineering company Subsea7 to create OneSubsea. SLB holds a 70 percent stake in OneSubsea, with Aker’s share at 20 percent and Subsea7’s share at 10 percent.

The new joint venture, OneSubsea, is based in Oslo, Norway, and Houston. Photo courtesy

Houston company closes offshore JV deal to drive innovation, efficiency in subsea production

teaming up

A new joint venture with co-headquarters in Houston will explore opportunities in the market for subsea systems that tap into offshore energy reserves.

The business, called OneSubsea, is a joint venture of Houston-based energy technology company SLB (Schlumberger), Norwegian energy engineering company Aker Solutions, and Luxembourg-based energy engineering company Subsea7. SLB holds a 70 percent stake in OneSubsea, with Aker’s share at 20 percent and Subsea7’s share at 10 percent.

The financial foundation of the joint venture is a combination of $700.5 million in stock, cash, and a promissory note. In addition, SLB and Aker folded their subsea businesses into the joint venture, which was announced in 2022.

“As demand grows for cost-effective, efficient, and sustainable energy,” the joint venture says, “a large portion of the corresponding supply increase will come from offshore developments resulting in strong deepwater activity … and the need for innovative subsea solutions.”

OneSubsea is based in Oslo, Norway, and Houston.

As Aker explains, a subsea system “provides a way to produce hydrocarbons from areas not economically or easily developed by the use of an offshore platform.” The system’s ocean-floor components are connected to subsea pipelines, riser systems, and other equipment.

Hydrocarbons are the key components of oil and natural gas.

“The offshore market is demonstrating a sustained resurgence as operators across the world look to accelerate development cycle times and increase the productivity of their offshore assets,” says Olivier Le Peuch, CEO of SLB.

Mads Hjelmeland is the newly appointed CEO of OneSubsea, which employs about 11,000 people around the world.

“OneSubsea’s extensive technology portfolio and engineering expertise enable us to address future market trends and needs at a unique scale. In doing so, we aim to fulfil our purpose of expanding the frontiers of subsea to drive a sustainable energy future,” says Hjelmeland, who is based in Houston.

Hjelmeland’s tenure with the previous iteration of OneSubsea began in 2014. That’s a year after SLB and Cameron, a supplier of equipment, systems and services for the oil and gas industry, formed a joint venture known as OneSubsea to serve the subsea oil and gas market. SLB owned a 40 percent stake in OneSubsea, and Cameron owned a 60 percent stake.

To establish OneSubsea, Cameron contributed its subsea business, and SLB pitched in a $600 million payment to Cameron along with several business units.

In 2016, SLB acquired Cameron in a cash-and-stock deal initially valued at $14.8 billion. OneSubsea then became a subsidiary of SLB, and that subsidiary is now part of the newly reconfigured OneSubsea.

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Rice Alliance, Greentown name winners of Houston Energy and Climate Week pitch competitions

winner winners

Approximately 100 startups from around the world pitched their breakthrough technologies and businesses during Houston Energy and Climate Week, with a select few taking home top prizes and bragging rights.

Each year, investors at the Rice Alliance Energy Technology Venture Forum name the 10 most-promising startups. Greentown's Climatetech Summit also culminates in a pitch event, where member companies can earn cash prizes.

Here's who won at two of the week's anchor events and competitions.

Rice Alliance Energy Tech Venture Forum

The 23nd annual event was held Thursday, Sept. 17, at Rice University’s Jones Graduate School of Business. The most-promising companies were selected by industry experts and participating investors attending the event.

The 10 most-promising companies included:

  • Australia-based Aquafortus, which has developed a non-thermal liquid to liquid desalination technology for resource recovery from wastewater brine
  • Houston-based Focis AI, which converts industrial laser scans into a queryable digital twin of refineries and plants
  • Houston-based ironlattice, a semiconductor manufacturing company
  • Houston-based Licube, which has developed technology to produce ultra-high-purity lithium compounds for the fusion energy, pharmaceuticals, semiconductors and high-performance solid-state battery sectors
  • Houston-based Mars Materials, a clean chemical manufacturing business that is working to convert captured carbon into resources, such as carbon fiber and wastewater treatment chemicals
  • Dallas-based MCatalysis, which has developed a suite of proprietary microwave-driven catalysts to produce high-quality, ready-to-use fuels compatible with existing infrastructure
  • Oslo, Norway-based OTee, an automation machinery manufacturer
  • Houston-based Pike Robotics, which deploys its Wall-Eye robot to inspect hazardous tanks without taking assets offline
  • New Mexico-based Spiritus, a direct-air-capture (DAC) technology company
  • San Francisco-based UptimeAI Inc., which develops AI reasoning agents for industrial operations teams

Stellai won the People's Choice Award. The Norwegian company develops AI products for the waste management industry.

The energy technology ventures selected to participate in the forum were named earlier this year. See the full list here, and read about last year's winners here.

Greentown Lab's Climatetech Summit

The annual summit was held Wednesday, Sept. 16, featured a number of Houston startups in its pitch competition and lighting pitch round. Judges included Dave Dreessen,, Jon Greene, Naval Preet Singh, Philip Llewellyn, Erin Madro, Justin Yeung, Jay Kim, Rawand Rasheed and Moji Karimi.

Pitch winners included:

  • First place: Elementium Materials' CEO Matthew Dawson, winning a $10,000 cash prize sponsored by TotalEnergies plus another $10,000 in legal services sponsored by Foley Hoag. The company develops advanced battery electrolytes. It is a Greentown Boston member; though Dawson is based in Houston.
  • Second place: Houston-based Solidec CEO and co-founder Ryan DuChanois, winning $5,000 in legal services sponsored by Foley Hoag. The company electrolyzes air, water and electricity into onsite hydrogen peroxide.

Lightening pitch winners included:

  • First place: Montana-based MagDrive Technologies, winning a $1,000 cash prize sponsored by Energy Transition Ventures. The company develops magnetically actuated, zero-emission valve systems that eliminate fugitive emissions and improve reliability.
  • Second place: Houston-based HEXASpec, winning a $500 cash prize sponsored by Foley Hoag. The company has created a new material to improve heat management for the semiconductor industry.

Read Greentown's recap of the summit here.

Houston Energy and Climate Week announced that the 2027 event will move to the spring, held April 4-10.

Kanin Energy raises up to $100M for waste-heat-to-power projects

fresh funding

Kanin Energy, a member of the Greentown Labs climatech and energy incubator in Houston, recently raised as much as $100 million in capital to grow its energy-as-a-service platform.

S2G Investments led a round of up to $50 million, and the Canada Growth Fund chipped in an additional $50 million. The money will primarily support Kanin’s development and operation of waste-heat-to-power projects.

Kanin—founded in 2020 in Calgary, Alberta, Canada—builds and runs onsite power assets for large-scale energy users. The startup says its energy-as-a-service offering lowers power costs, boosts power reliability and decreases emissions.

The company operates a waste-heat-to-power project at Ohio’s University of Dayton. The project supplies zero-emission electricity.

Kanin has a pipeline of projects totaling about 50 megawatts of capacity. This includes a waste-heat-to-power plant at the Phillips 66 Mewbourn gas-processing plant near Greeley, Colorado.

“Kanin was built on the belief that industrial facilities already hold the solution to their own energy challenges, they just need the right partner to execute,” Janice Tran, CEO of Kanin, who is based in Houston, said in a release. “At a time when power costs continue to rise, [our] solutions are an important tool for our industrial customers to manage their costs, operations, and emissions.”

Marisa Sweeney, principal at S2G, says waste heat is a largely underused resource for lowering power costs, alleviating grid congestion and improving power reliability.

The waste-heat-to-power process captures thermal energy from industrial activities and converts it to electricity. This happens without using extra fuel or generating more emissions.

Kanin says up to 58 percent of energy consumed by industrial processes is lost as waste heat. This heat winds up in the atmosphere at thousands of facilities in North America, including oil-and-gas operations, cement plants, and steel mills, the startup says.

Kanin was founded in 2020 in Calgary, Alberta, Canada. It opened offices at Greentown Labs Houston in July 2022.

7 Houstonians from energy sector make Forbes list of richest Americans

Rich List

The richest billionaires in America have a collective worth of $8 trillion in 2026, a staggering $1.4 trillion increase since last year, says Forbes. American billionaires are so wealthy that it now takes an unprecedented $4.4 billion net worth to be considered one of the richest people in the country. And one local billionaire has regained the title as Houston's wealthiest resident.

The annual Forbes 400 list is a definitive ranking of the wealthiest Americans, using interviews, financial data, and documentation provided by billionaires and their companies. In all, 43 billionaires across Texas made it on the 2026 list, and 10 are based in Houston. Seven of them have ties to the energy industry.

Oil tycoon Jeffery Hildebrand, 67, now reigns as the No. 1 richest Houstonian, the 9th richest Texan, and the 88th richest person in America for 2026. Hildebrand's net worth has surged $4.7 billion since last year, bringing his current net worth to $14.7 billion. He cofounded Hilcorp, one of the largest privately owned oil and natural gas producers in the U.S., in 1990 and served as its CEO until 2018. He still serves as the chairman of the company.

Kinder Morgan chairman Richard Kinder is the No. 2 richest in Houston. Kinder, 81, was dubbed Houston's richest billionaire in the 2025 Forbes 400 list. His net worth has increased from $11.1 billion to $12.9 billion in just one year. He is the 11th richest Texan and the 100th richest person in America.

Houston pipeline heir Randa Duncan Williams ranks 124th on the list with an estimated net worth of $11.7 billion. Fellow pipeline heirs Dannine Avara and Milane Frantz tie for 128th nationally. Each has an estimated net worth of $11.6 billion. Scott Duncan ties for No. 137 with an $11.3 billion estimated net worth.

Energy exploration chief executive George Bishop of GeoSothern Energy ranks No. 380 with an estimated net worth of $4.5 billion. Last year: $4.7 billion.

Here's how the rest of Houston's billionaires, outside of the energy industry, ranked on this year's list:

  • Toyota mega-dealer Dan Friedkin, 61, is the 102nd richest American with an estimated net worth of $12.9 billion, up from $9.7 billion last year. He most notably owns Gulf States Toyota, which sold $14.5 billion worth of Toyotas in 2025, per Forbes.
  • Hospitality honcho Tilman Fertitta, 69, has a net worth of $12.3 billion and is the 110th richest American. Fertitta owns hospitality corporation Fertitta Entertainment and the NBA team Houston Rockets. He most recently purchased the WNBA's Connecticut Sun and plans to relocate them to Houston under the Houston Comets name in 2027. He also keeps himself busy as President Trump's ambassador to Italy.
  • Texans owner and CEO Cal McNair, 64, ranks as the 218th richest person in America with an estimated net worth of $7.7 billion.

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A version of this article first appeared on CultureMap.com.