digging in

ExxonMobil breaks ground on Texas carbon dioxide storage project

The rig stands 225 feet tall and extends 8,000 feet below the subsurface. Photo via exxonmobil.com

ExxonMobil announced this month that it has officially broken ground on a groundbreaking carbon dioxide storage site.

According to a release from the company, a new rig is currently being used to gather information about an underground site in Southeast Texas. The rig stands 225 feet tall, but more importantly extends 8,000 feet below the subsurface to investigate if the site is a safe place to store carbon underground.

“Everyone’s excited about this appraisal well because we’re literally breaking ground on a new chapter of our work to help reduce industrial emissions,” Joe Colletti, who oversees carbon capture and storage development along the Gulf Coast for Exxon, says in a statement.

Exxon plans to move the rig to other sites in the Gulf Coast in the future for clients Nucor Corp., CF Industries and Linde.

In the last year, Exxon has made agreements with these regional companies to store carbon captured from their operations.

  • Exxon agreed to transport and permanently store up to 2.2 million metric tons of carbon dioxide each year from Linde’s hydrogen production facility in Beaumont, Texas when it launches in 2025.
  • Exxon agreed to store up to 2 million metric tons per year of CO2 captured from CF Industries’ ammonia plant in Donaldsonville, Louisiana, starting in 2025.
  • Exxon agreed to capture, transport and store up to 800,000 metric tons per year of CO2 from Nucor’s direct reduced iron manufacturing site in Convent, Louisiana starting in 2026.

Together, the three agreements represent a total of 5 million metric tons per year that Exxon plans to transport and store for third-party customers.

“Our agreement with Nucor is the latest example of how we’re delivering on our mission to help accelerate the world's path to net zero and build a compelling new business,” Dan Ammann, president of ExxonMobil Low Carbon Solutions, says in a statement over the summer. “Momentum is building as customers recognize our ability to solve emission challenges at scale.”

In addition to the carbon storage agreements, the energy giant also completed the acquisition of Denbury Inc. this month in an all-stock transaction valued at $4.9 billion. The deal adds more than 1,300 miles, including nearly 925 miles of CO2 pipelines in Louisiana, Texas and Mississippi to Exxon's CO2 pipeline network.

The deal was first announced this summer.

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A View From HETI

The Department of Energy has axed federal funding for Houston-area clean energy projects from ExxonMobil, Calpine and Ørsted. Photo via exxonmobil.com

The federal government has canceled more than $700 million in funding for three clean energy projects in the Houston area.

In all, the U.S. Department of Energy (DOE) recently wiped out $3.7 billion in funding for 24 carbon capture and decarbonization projects across the country.

Houston-area projects that took a hit are:

It’s unclear how the loss of federal funding will affect the three Houston-area projects.

All $3.7 billion from the DOE was awarded in 2024 and 2025 during the Biden administration—in some cases days before President Trump took office.

“While the previous administration failed to conduct a thorough financial review before signing away billions of taxpayer dollars, the Trump administration is doing our due diligence to ensure we are utilizing taxpayer dollars to strengthen our national security, bolster affordable, reliable energy sources, and advance projects that generate the highest possible return on investment,” U.S. Energy Secretary Chris Wright said in a release.

Advocates for clean energy sharply criticized the DOE’s action:

  • Jessie Stolark, executive director of the Carbon Capture Coalition, said cancellation of the 24 DOE-funded projects “is a major step backward in the nationwide deployment of carbon management technologies. It is hugely disappointing to see these projects canceled — projects that had already progressed through a rigorous, months-long review process by technical experts at DOE.”
  • Iliana Paul, deputy director for the Sierra Club’s industrial transformation campaign, complained that the Trump administration “killed dozens of major investments in American competitiveness, good jobs, and cleaner air to support Trump’s tax cuts and line the pockets of billionaires. These projects were not just pro-climate; they were pro-jobs, pro-innovation, and pro-public health. American workers, fenceline communities, and forward-thinking companies have had the rug pulled out from under them.”
  • Conrad Schneider, senior U.S. director of the Clean Air Taskforce, said the DOE’s move “is bad for U.S. competitiveness in the global market and also directly contradictory to the administration’s stated goals of supporting energy production and environmental innovation. Canceling cutting-edge technology demonstrations, including support for carbon capture and storage projects, undercuts U.S. competitiveness at a time when there is a growing global market for cleaner industrial products and technologies.”

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