Terradot secures $34M debt for 1M-tonne ERW rollout

By Elena Vasquez

$34 million in debt financing from HA Sustainable Infrastructure Capital Inc. (HASI) will support Terradot’s existing network of enhanced rock weathering (ERW) projects in the United States and Brazil, the company said. The package accompanies a scheduled 2026-2027 deployment of 1 million tonnes of crushed rock across 60,000 hectares (150,000 acres) of farmland.

Those tonnage and area figures represent project targets, not disclosed completed operating capacity.

What does the financing cover?

Marsh arranged the HASI transaction, while CFC supports it through carbon delivery insurance. For Terradot, that combines project debt with contracted demand and insurance tied to carbon delivery, addressing three elements that executives and investors increasingly expect before financing larger ERW deployments.

Terradot said its existing network has attracted fixed-price, multi-year offtake agreements with the Frontier advance market coalition. Five named members are:

• Google
• Salesforce
• JPMorgan
• Shopify
• Stripe

The announcement discloses no contract prices, individual volumes or exact tenors, so readers cannot calculate revenue per tonne. It also provides no allocation between the two countries or individual sites.

How does contracted demand support the rollout?

Terradot CFO and Co-Founder Julia Sekula tied the financing to contracted demand and field performance: “With contracted demand and years of field data that let us bound risks and forecast delivery, this investment marks an important step in bringing project capital to enhanced rock weathering and building the operating record for larger deployments.”

Annmarie Reynolds, HASI’s Co-Chief Investment Officer, said: “Terradot combines contracted demand, rigorous field data, a repeatable deployment model, and a thoughtful approach to risk, all qualities we look for in every investment.”

Frontier Head Hannah Bebbington Valori linked the coalition’s large, multi-year agreements to capital access for companies such as Terradot. Together, the contracts give buyers a route to purchase future removal, while the fixed-price structure gives Terradot contracted demand rather than relying solely on a future voluntary carbon market.

For lenders, however, deployment remains the test. The financing establishes a project-finance structure; field results and physical delivery will determine whether that structure supports larger facilities and repeat deployments.

What still needs evidence?

Over the past few years, Terradot has positioned itself among ERW front-runners, with projects in the United States and Brazil and strategic partnerships it says benefit the company, local communities and the wider sector. The announcement does not provide comparative market-share or operating data to substantiate that positioning.

Terradot is working with Microsoft to validate ERW at Sentinel, a soil-to-stream research site in Brazil. Sentinel tracks carbon dioxide retention through every ERW stage using what Terradot describes as a comprehensive monitoring network.

That measurement work matters because the financing argument rests on field data, not only on offtake contracts. The release provides no retention rate, monitoring period or site-level schedule for Sentinel, leaving the operating record outside the financing targets.

Terradot also acquired Eion this year and united the two brands into what it called a globally leading ERW platform. The announcement does not break out the capacity, sites or forecast volumes added through the acquisition.

A related deal reported alongside the financing involves Google signing its largest carbon dioxide removal purchase to date with Terradot and backing methane abatement in a new agreement. Google is also among the named Frontier members, linking the project-financing announcement to buyer demand from the same corporate market.

What has to happen in 2026-27?

Terradot’s 1 million-tonne schedule equates to an average of 500,000 tonnes per year if the work proceeds evenly. The company has not disclosed how the volume divides between the United States and Brazil, leaving national delivery performance unavailable as a benchmark.

The next market milestone is straightforward: Terradot must deploy the scheduled 1 million tonnes across 60,000 hectares while converting monitoring data and contracted offtakes into the operating record that buyers and lenders can assess for larger deployments.