Occidental Petroleum Corporation (Oxy) has made its second ambitious move towards becoming a carbon dioxide removal leader by acquiring Holocene, a direct air capture (DAC) start-up based in Tennessee. This is Occidental's second large-scale foray into DAC technology, after acquiring Carbon Engineering for $1.1 billion in 2023. Although financial terms of the Holocene acquisition were not disclosed, the strategic acquisition indicates Occidental's apparent intent to upsize and advance carbon removal technologies as the planet ramps up the battle against climate change.

Through its Oxy Low Carbon Ventures subsidiary, Occidental has been investing heavily in DAC innovation, a technology both the Intergovernmental Panel on Climate Change (IPCC) and International Energy Agency (IEA) have identified as key to hitting net-zero ambitions. With this latest acquisition, the company is not just growing its roster of carbon capture technologies but also setting itself up to dominate a rapidly expanding segment of the climate tech space.

Holocene, established in 2022, has rapidly emerged as an innovative, liquid-based thermochemical DAC system company. The technology employs amino acids and organic compounds to capture CO₂ from the air. The gas is concentrated and heated at comparatively low temperatures to yield a pure CO₂ stream, which is suitable for transporting and storing permanently underground. Holocene's system, scalable and cost-effective, is a new addition to Occidental's current carbon capture approach.

Holocene made waves in 2024 by entering a landmark deal with Google to provide 100,000 tonnes of carbon removal credits for just $100 a ton—the cheapest recorded price of DAC-based carbon removal. The breakthrough in costs, not only highlighted the business worthiness of Holocene's tech but also the new benchmark set for the larger industry that had grappled with costs long enough.

"We expect bringing these technologies together to allow us to drive our R&D efforts to enhance the efficiency of our direct air capture process, lower the cost of CO₂ capture, and speed DAC deployment," stated William Fitzgerald, a representative for Occidental. Synergies in technology are likely to be created by combining Holocene's liquid-based DAC with the method of Carbon Engineering. Whereas Carbon Engineering's method draws on high-temperature, solid sorbent systems, Holocene's low-temperature technology may add the flexibility of operations and reduce the energy usage.

Occidental's commitment to large-scale scaling of DAC can also be seen in its ongoing development of Project Stratos, a DAC plant in Ector County, Texas. When developed, the site will be the world's biggest DAC plant by capacity, having the capability of capturing 500,000 tonnes of CO₂ per year. With new Environmental Protection Agency (EPA) permits obtained for permanent geological sequestration of captured CO₂ in deep underground wells, Occidental is making sure that captured carbon is not only taken out of the atmosphere but also safely and securely stored.

The acquisition also draws attention to increased investor and regulator scrutiny of aggressive decarbonization strategies. With rising pressure on business to be able to prove climate leadership, technologies such as DAC are increasing popularity for their promise to make deliverable, sustained emissions cuts. Occidental's two-technology strategy may prove to be crucial in achieving that potential at a commercial level.

Holocene’s CEO and Co-founder Anca Timofte expressed optimism about the acquisition, calling it a significant milestone for the company’s vision. “The dream to see our liquid, low-temperature DAC technology deployed at scale is that much closer to becoming reality,” Timofte said. “I’m proud of the team and of all our work in getting here, and grateful that Oxy recognized our potential and the possible synergies between our technologies.”

As the climate emergency gathers speed and countries make efforts to reduce their carbon commitment, the urgency for carbon removal technologies will increase only further. With this transaction, Occidental is not simply adding to its technological arsenal—it is setting up what may well be a fundamental transformation in the global carbon business. The aggressive investment thesis of the company implies that the days of affordable, scalable carbon removal are no longer a future prospect but an ascending reality.