Vaulted Deep secures $35m debt facility for carbon removal

The $35 million debt facility secured by Vaulted Deep from Mediobanca, arranged by CFP Energy, marks a pivotal shift in how waste management infrastructure is financed in the U.S. Unlike conventional loans tied to traditional collateral, this facility hinges on long-term purchase contracts—particularly Vaulted’s offtake agreements with Frontier, the advance market commitment backed by corporations like Stripe, Shopify, and Google. The deal underscores a growing trend where carbon removal revenues, rather than physical assets, are becoming a bankable form of security, signaling a maturing market for durable carbon removal solutions.

Vaulted’s ability to deliver over 20,000 tons of carbon removal in the first half of 2026—more than its entire output in 2025—reflects accelerating demand from corporate buyers seeking permanent carbon removal pathways. This isn’t just a volume milestone; it’s a validation of the economic model. As Julia Reichelstein, CEO and Co-Founder of Vaulted Deep, noted, the financing enables the company to scale operations while addressing the nation’s shrinking disposal options. Traditional landfills and surface disposal methods are increasingly constrained by regulation and community opposition, creating a gap that subsurface infrastructure is uniquely positioned to fill.

The financing also highlights the role of AI in transforming site development. Vaulted’s AI-Accelerated Site Development Platform integrates geology, regulatory, and waste-supply data to streamline site selection, permitting, and injection operations. By standardizing templates and automating monitoring, the platform reduces the time and uncertainty traditionally associated with opening new disposal sites. This isn’t just efficiency for efficiency’s sake—it’s a necessary evolution to meet the scale of demand. If organic waste disposal is to become a scalable climate solution, the permitting and operational bottlenecks must be dismantled.

Frontier’s spokesperson Hannah Bebbington Valori framed this as a proof of concept: robust, multi-year offtake agreements provide the revenue certainty needed to attract institutional debt. This is a critical inflection point. Corporate net-zero commitments are driving demand for high-integrity carbon removal, but without bankable contracts, even the most innovative technologies struggle to secure financing. The Vaulted-Mediobanca deal demonstrates that these contracts can serve as a bridge between climate ambition and physical infrastructure.

CFP Energy’s Tyler Manchester emphasized the broader implications: transactions like this connect institutional capital with climate technologies, accelerating the deployment of solutions that align with corporate decarbonization strategies. The involvement of Artio, a carbon insurance firm, further de-risks the investment, addressing concerns about permanence and liability—a persistent hurdle for carbon removal projects.

For the water, sanitation, and drainage sector, this deal offers a blueprint for how infrastructure financing might evolve beyond traditional models. If subsurface waste disposal can attract mainstream capital based on carbon removal revenues, could similar structures emerge for water reuse, stormwater management, or even desalination projects? The key lies in demonstrating scalability, permanence, and revenue certainty—three attributes that are increasingly critical in a world where climate resilience is no longer optional.

Vaulted’s journey from a $48 million equity round and an $8 million XPRIZE Carbon Removal award to a $35 million debt facility is more than a funding milestone. It’s a case study in how climate-focused financing can unlock new economic pathways for essential infrastructure. The question now is whether other sectors will follow suit, turning long-term contracts into capital that builds the future.

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