Terradot has agreed to acquire assets of Eion, a US-based enhanced rock weathering (ERW) firm involved in early olivine-based deployments and among the first to issue ERW carbon removal credits.
ERW is a carbon dioxide removal approach that accelerates natural weathering by spreading crushed minerals such as basalt or olivine on farmland, where they chemically bind with CO₂ over time. The method is gaining attention as demand for durable carbon removal grows.
Under the agreement, Terradot will acquire Eion’s intellectual property, project footprint, operating capabilities and carbon removal contracts, as well as its core team. The companies said Eion will be integrated through shared data, patents and operating tools, while existing programmes continue.
“ERW is becoming a critical pathway for durable carbon removal, and the market is moving from pilots to industrialised programmes built to deliver at scale,” said James Kanoff, chief executive of Terradot.
Rob Parker, chief financial officer of Terradot, said the transaction would strengthen the company’s ability to finance projects. “A larger, diversified portfolio with an operating track record and high-integrity MRV improves bankability and expands access to long-term capital for project development and delivery,” he said.
Eion’s contracts for more than 100,000 carbon removal credits are included in the deal. Combined with Terradot’s existing contracts totalling more than 300,000 tonnes with buyers including Google and Frontier, the merged portfolio is among the largest contracted ERW portfolios globally.
Ana Pavlovic Hans, chief executive of Eion, said: “Eion has focused on making ERW work in the field, with rigor and integrity. Joining Terradot continues Eion’s work and makes us more execution-ready from day one.”
Market data suggest ERW demand is increasing. Public disclosures tracked by CDR.fyi show multi-year ERW offtake agreements increasingly measured in tens of thousands of tonnes, with some exceeding 100,000 tonnes.
Following the acquisition, Terradot will operate olivine-based ERW projects in the US alongside basalt-based deployments in Brazil. The company said it will integrate Eion’s deployment datasets, patent portfolio and published measurement and verification work into its MRV platform.
“By bringing Eion’s operating learnings and technical contributions into the Terradot platform, we strengthen the foundation for defensible measurement in ERW,” said Scott Fendorf, Terradot’s chief science officer.
